Beware of sandisk 64gb ultra - Xperia Z3 Accessories

Guys don't ever get sandisk ultra 64gb. I had 3 of their cards which was purchased at the same time and unfortunately it failed. The issue is rampant on their 64gb ultra (google Sandisk ultra cannot delete files). My micro sd suddenly became a read only device. Files are intact but i cant modify contents which means i cannot do format erase and anything. Practically it became a useless card. Already did windows low level format, tried to check drive permissions and it was not set in read only, no virus. The writting controller chip just broke down. for those who are planning to buy a card and have their cameras and their 4K vids automatically save in the sd card, then don't buy sandisk (at least The 64gb ultra). It seems their cards can't take much writing before it breaks
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Try the hp format tool, solves most issues for me
http://m.download.cnet.com/HP-USB-Disk-Storage-Format-Tool/3000-2094_4-10974082.html
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Ah-Bollox said:
Try the hp format tool, solves most issues for me
http://m.download.cnet.com/HP-USB-Disk-Storage-Format-Tool/3000-2094_4-10974082.html
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Click to expand...
Click to collapse
Actually i tried everything including that one. I even tried Easeus, Linux and all. Not really a noob when it comes to these things. Seems Sandisk is not really a durable card. I used the card for storing stuff (torrent goes directly to it, 4k video, and all). so i guess it's really time that sony steps up the game when it comes to storage and should give a higher option for users. Maybe 16, 32gb and 64gb (128gb would also be nice) options should be available internationally while still keeping the sdcard for backup purposes. I'm sure people won't mind paying the extra costs for these upgrade options.
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i'll try this card soon:
http://www.newegg.ca/Product/Produc...1651&cm_re=g._skill_sd-_-20-231-651-_-Product

I have the 64GB Sandisk Exteme Plus. I believe they are MLC vs. the Ultra's TLC you have. MLC lasts longer or better than TLC or so I heard. I'll see if this thing will fail on my phone.

Samsung is a good alternative as almost every phone including the Z3, iPhone etc use Samsung NAND flash for their internal memory. They released their 128GB MicroSD on the 7th and their PRO series is cheaper and performs better than Sandisk's ExtremePlus.
The Samsung EVO series is their lower end equivalent to the Sandisk Ultra, but still better.
As for your issue I have not heard it before now....... SanDisk makes pretty reliable NAND Flash itself.

abhinav.tella said:
Samsung is a good alternative as almost every phone including the Z3, iPhone etc use Samsung NAND flash for their internal memory. They released their 128GB MicroSD on the 7th and their PRO series is cheaper and performs better than Sandisk's ExtremePlus.
The Samsung EVO series is their lower end equivalent to the Sandisk Ultra, but still better.
As for your issue I have not heard it before now....... SanDisk makes pretty reliable NAND Flash itself.
Click to expand...
Click to collapse
So are there pro cards their highest type? How much does their 128gb cost? Didn't know That they released one. Yeah i thought sandisk was reliable but this issue on my ultra is the same and rampant on their ultra but the 32gb type
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hanime said:
I have the 64GB Sandisk Exteme Plus. I believe they are MLC vs. the Ultra's TLC you have. MLC lasts longer or better than TLC or so I heard. I'll see if this thing will fail on my phone.
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Click to collapse
I think tlc is just the upgraded version of mlc and both are still not really reliable compared to NAND
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I'm planning too buy on ebay. Could you help me by telling the usual price of samsung pro? I want to buy thw 64gb as 128 is not yet available. I am staying away from sandisk after that incident of failing cards
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infinitylook said:
I think tlc is just the upgraded version of mlc and both are still not really reliable compared to NAND
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Click to collapse
They are all NAND. The Phone uses MLC for internal meaning 2 bits per cell with about 2000-3000 writes per cell. TLC is 3 bits per cell which is even worse and slower. More bits per cell means more voltage states for 0/1, leading to lower room for compensation as it wears down leading to failure earlier like 500-1000 writes per cell. Also its slower. Remember when a file is written to the flash and then deleted, even if part of the file is on a partially filled cell, entire cell has to be erased. If there was part of another file on it it has to be moved before it erases. Now imagine that on TLC its much worse.
The PRO series is MLC same as Sandisk Extreme
the EVO is TLC same as SanDisk Ultra
Phone's internal MLC flash is faster because its not only higher grade but faster interconnects as its soldered on.
As for SLC (50,000+ Writes per cell for 20nm) its too expensive and I don't think there are even many SSDs that use it anymore.............. Well basically SLC is in a way "formmatted" for the lack of a better word, as MLC/TLC during production to increase data density at the cost of life of the flash.
Also the smaller the NAND gets the lower the life. The old 50nm NAND MLC has ~10,000 write cycles, 30nm ~5,000 and the current gen which is 20nm is ~3,000.
If you wonder, why make it smaller? Its because the smaller the die the more NAND per wafer, so bigger profits
SLC 100% Space (baseline) (~50,000+ write cycles per cell) (Fastest)
MLC 200% as its 2 bits per cell (~3,000 write cycles per cell) (Good) (Best cost to benefit ratio)
TLC 300% as its 3 bits per cell (~750 write cycles per cell) (Slowest)
.
Article about NAND Flash types and how they work:
http://www.anandtech.com/show/5067/understanding-tlc-nand

I see. Yeah just read it now tlc is the cheaper and slower one between the 3 types. I think our internal memory uses slc and pro and extreme cards use mlc.
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Internal is also MLC, "almost" no one uses SLC now not even most business grade SSDs.

abhinav.tella said:
Internal is also MLC, "almost" no one uses SLC now not even most business grade SSDs.
Click to expand...
Click to collapse
Really? i thought SLC are for those that need high reliability
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Its reliable enough I doubt you would see it die before you switch phones. For example 32 GB Intel SLC SSD costs over $200 while a 512GB MLC SSD costs the same price. At an extreme 20GB scenario of writes per day it will be about a decade of life out of an average 256GB MLC SSD before it fails. So think of the cost to benefit ratio.
My Laptop's Crucial 256GB SSD is rated for 65TB writes so if you extrapolate that to a 32GB in the TMO Z3 you have to write about 8TB of data to wear it out or 10-11GB per day for 2 years which I doubt will ever happen.
FYI an average computer user writes 5-10GB per day, so it will be lower for phones.
Samsung's current gen 3D V NAND MLC/TLC has double the life of regular ssds, I don't think our phone has that though.
If want something interesting, some SSD makers reserve a part of the MLC flash left as SLC for caching.
XPERIA Z3 NAND specs from Samsung, the KLMAG2GEAC is the 16GB module in the list on page 5 of the PDF:
https://www.google.com/url?sa=t&sou...Wg5XrvdAXTaYqy1Fw&sig2=_lMMZJggd0lKxtRps2sPMQ

I've had a Samsung 64GB evo card for about 6 months, and have had absolutely no issues with it.
Clicky
There are really only a few manufactures who make the nand, Samsung/SanDisk/Toshiba... etc Everyone else uses their flash and re-sells it.
Probably more likely to get better quality nand since the manufacturer gets first dibs.

Have SanDisk Ultra microSDXC Class 10 64GB card about 2 months from now and don't have any issues (yet) you described. Let's see.

xxquicksh0txx said:
I've had a Samsung 64GB evo card for about 6 months, and have had absolutely no issues with it.
Clicky
There are really only a few manufactures who make the nand, Samsung/SanDisk/Toshiba... etc Everyone else uses their flash and re-sells it.
Probably more likely to get better quality nand since the manufacturer gets first dibs.
Click to expand...
Click to collapse
Very true indeed. Also Micron (aka Crucial) and Intel jointly produce NAND and I believe Kingston and Toshiba also jointly produce.
Samsung is the largest producer overall though for RAM and NAND (<- Best SSDs but expensive), after that I think its Micron (Crucial) (<- Their SSDs are the best bang for the buck with great performance.)
As for SanDisk I am pretty sure they set the standards for SD/MicroSD cards (shape/size etc) they are pretty reliable like the rest of the producers.
OP are you sure you did not get a fake SanDisk?
I remember when I was in India I ordered SanDisk cards for 2 of my friends and me on eBay. I got a 2GB card made to seem as a 16GB and my friends got plastic tabs cut out to look like MicroSD with gold paint for contacts.
Got a refund though. Sandisk and others always say to be careful on eBay, even on Amazon or Newegg buy directly from them, and not the resellers who sell via Amazon/Newegg. You will know because if its a reseller both Newegg/Amazon mention on the side near the price.

Now that's i am doubtful. I tested it with the software HWtest is the name i guess and it passed. I ran it a couple of times and it passed the 64 gb test. And the price was just right when i purchased it. I had no problems filling that up before with a lot of torrent downloads from my phone. Guess it simply just "decided to give up".
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Where did you buy it?

Mine is from ebay from a trusted seller
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Related

Largest size MicroSD Card

I don't know if anybody has seen this yet.
http://www.engadget.com/2011/05/26/kingmax-flaunts-worlds-first-64gb-microsd-card/
http://www.kingmax.com/product_info.asp?fid=151&mid=185&cid=187&id=2104
I know that the max size that the 3D and most mobile products on the market right now can accept is 32GB but how hard would it be to change something around to make it accept a larger size. I remember back when I had the Titan or Touch Pro there was a program or script that you could run to let the phone see the new 16GB MicroSD cards when they came out.
That be interesting to be done. But How much does a 64GB one cost lol?
klbjr said:
I don't know if anybody has seen this yet.
http://www.engadget.com/2011/05/26/kingmax-flaunts-worlds-first-64gb-microsd-card/
http://www.kingmax.com/product_info.asp?fid=151&mid=185&cid=187&id=2104
I know that the max size that the 3D and most mobile products on the market right now can accept is 32GB but how hard would it be to change something around to make it accept a larger size. I remember back when I had the Titan or Touch Pro there was a program or script that you could run to let the phone see the new 16GB MicroSD cards when they came out.
Click to expand...
Click to collapse
That seems very likely as it appears to only be a difference in filesystem (exFAT) as the physical interface/standard is identical.
southern87 said:
That be interesting to be done. But How much does a 64GB one cost lol?
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Click to collapse
I don't know. They haven't released it to the public yet. Soon I hope. Probably gonna be about $200 that's what the first 32GB ones cost and a Class 10 costs about $100 now.
daneurysm said:
That seems very likely as it appears to only be a difference in filesystem (exFAT) as the physical interface/standard is identical.
Click to expand...
Click to collapse
I hope so cause I need one for the 3D and one for my tablet. These 3D ROMS are huge!
Yeah, its sdxc. I doubt that is even going to function in anything for a while.
The largest sd card I've seen is 128gb
xjman said:
Yeah, its sdxc. I doubt that is even going to function in anything for a while.
The largest sd card I've seen is 128gb
Click to expand...
Click to collapse
we can use the card if we can use exFAT.
SDHC (SD 2.0 standard) has a size limitation of 2.0TB, thus artificially limited....blah blah blah SD 3.0..... and now we are at SD4.0 whose standard calls for much higher transfer rates as well. If this card does not have the (much) higher transfer rates then it is a "SD 3.5" (not an actual standard) stop-gap measure...a hack.
So, yes, our phones either can or will support SDXC cards as high as 2TB, as file systems allow.
edit: I was wrong about classification, it is certainly standard SD 3.0
I still got 21gb left with music I need and all the apps, so I'm good with 32gb, i probably be down 15gb with roms and stuff but i don't see the need for it (myself)
If you don't have an Evo3d well you don't have an Evo3d
The good thing about this is it should drive down the cost if the 32gb cards as these 64gb's hit the market. Probably not right away, but over time the prices will start dropping.
Sent from a Revolutionary, TWRP'd & s-off EVO 3D
Specs from their site:
‧SD3.0
‧Capacity:64GB
‧Speed:Class6/Class10
‧Dimension:15 mm x11 mm x1.0mm
‧Wear leveling algorithm to maximize product lifetime
‧Built-in Error Correction Code that auto corrects data
‧Energy efficient, extends mobile devices’ battery lifetime
So it says its SD3.0 What are the 32 GB Class 10's on the market now?
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klbjr said:
Specs from their site:
‧SD3.0
‧Capacity:64GB
‧Speed:Class6/Class10
‧Dimension:15 mm x11 mm x1.0mm
‧Wear leveling algorithm to maximize product lifetime
‧Built-in Error Correction Code that auto corrects data
‧Energy efficient, extends mobile devices’ battery lifetime
So it says its SD3.0 What are the 32 GB Class 10's on the market now?
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Click to collapse
SD2.0 (aka SDHC) I believe. But that is the upper limit of the standard. Keep in mind that these cards still operate as standard block devices at the hardware level. So SD3.0 is pretty much the same as SD2.0 except at larger capacities aka SDXC. There is nothing separating SD2.0 and SD3.0 cards except size which is artificially restricted based on file system...thanks to Microsoft.
SD4.0 is where we get SSD like speeds. EDIT: and those will not work in our devices...maybe at lower speeds, but not 100mbit/s

What is considered a good price for a 32gb sd card?

Just wanted to know your guys opinion on the following sd card, is it a good deal?
http://www.newegg.com/Product/Produ...ark=&IsFeedbackTab=true&Page=3#scrollFullInfo
let me know!
That is a class 4 MicroSD card. For that speed, that is a good price.
jomamasfat said:
That is a class 4 MicroSD card. For that speed, that is a good price.
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Click to collapse
cool thanks for your opinion, mainly need a bigger one cause of all the games lol... running an 8gb right now and its almost full...
ShinnAsuka said:
cool thanks for your opinion, mainly need a bigger one cause of all the games lol... running an 8gb right now and its almost full...
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Click to collapse
Got mine on Amazon for a little less (real little) and free shipping ( http://www.amazon.com/SanDisk-32GB-...JYCY/ref=sr_1_1?ie=UTF8&qid=1325739855&sr=8-1 ).
The SanDisk Class 4 was the go-to card for the NC (there's a chart floating around about r/w speed for different classes, sizes, and brands. Anything above a Class 4 is not recommended for this device (IMO) -- due to the performance-to-dollar ratio of the higher priced cards.
A little more then a dollar a gig... I'd say it's good
n1n00b said:
A little more then a dollar a gig... I'd say it's good
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Click to collapse
My comment was in reference to the cost/benefit of the steep performance vs. cost slope of investing in higher class cards.
My friend and I bought a Class 10 32 gig for only $39. I personally do not like Sandisk as a brand and was pleased to not buy their product, but that is just my taste.
Class 10 32gig that was rated well cost me about $50.
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conundrum768 said:
Got mine on Amazon for a little less (real little) and free shipping ( http://www.amazon.com/SanDisk-32GB-...JYCY/ref=sr_1_1?ie=UTF8&qid=1325739855&sr=8-1 ).
The SanDisk Class 4 was the go-to card for the NC (there's a chart floating around about r/w speed for different classes, sizes, and brands. Anything above a Class 4 is not recommended for this device (IMO) -- due to the performance-to-dollar ratio of the higher priced cards.
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Click to collapse
yea the one you linked to has sales tax which puts it like 20 cents below the price of newegg lol thanks for your opinion though
EDIT: oops, forgot to actually check and it doesn't have any sales tax! wow i actually just might get it from amazon then, even if it might take a bit longer... newegg(4-7 business days) vs amazon (5-8 business days) lol...
EDIT2: the link you provided, the pic of the card doesn't say what class it is and apparently there is a "newer" model here: http://www.amazon.com/SanDisk-micro...M-032G/dp/B004G60AD6/ref=cm_cr_pr_product_top
surprisingly enough, its actually cheaper than the one you provided by like 20 cents after shipping and tax are calculated... yea the "newer" one needs shipping, but still no tax which is good...
You don't have Amazon prime? They have a program called Amazon mom that gives you free prime 2 day shipping for a few months. Google it and sign up.
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kusje said:
You don't have Amazon prime? They have a program called Amazon mom that gives you free prime 2 day shipping for a few months. Google it and sign up.
Sent from my GT-I9100 using XDA App
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Click to collapse
i had amazon student for one year, then they keep pestering me about prime for 39$ a year. i've heard about amazon mom, but i'm not a mom lol
I spent 59.99 for a 32gb uhs-I sdcard from newegg. Haven't got it yet, but I have high expectations for it. For 60 bucks, it should do headstands!
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jsp254 said:
I spent 59.99 for a 32gb uhs-I sdcard from newegg. Haven't got it yet, but I have high expectations for it. For 60 bucks, it should do headstands!
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Click to expand...
Click to collapse
Don't you think the onboard flash controller would be a limiting factor in the performance of that card? If a Class 4/6's performance on the Nook Tablet is near equal to the performance of a Class 10 on the Nook Tablet then wouldn't you think that the top end performance of the onboard flash controller is 6MB/s?
Just saying, a faster card may not be better, no matter how fast, or how much it cost if the onboard technology simply can't keep up it'll just work like a slower card.
Look at Micro Center's prices. They are a good gauge. Be careful buying ones off ebay, there are folks selling counterfeit ones.
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VidGameKing said:
Don't you think the onboard flash controller would be a limiting factor in the performance of that card? If a Class 4/6's performance on the Nook Tablet is near equal to the performance of a Class 10 on the Nook Tablet then wouldn't you think that the top end performance of the onboard flash controller is 6MB/s?
Just saying, a faster card may not be better, no matter how fast, or how much it cost if the onboard technology simply can't keep up it'll just work like a slower card.
Click to expand...
Click to collapse
I like to think that I'm thinking ahead. these were designed specifically with tablets and phones in mind. Right now I'm running a class 6 8gb I bought for my G1 originally. My phone is a shift, and I have a nook tablet in the way also. Once the tablet is fully and completely rooted and running cm9, it will be my primary android device for my work. The 8gb class 6 will go back to being my phones storage. As a side note, I have a 16gb class 4 card also. I could clearly see a difference running it. My phone would choke and sometimes corrupt the images when transferring numerous pictures at once via USB cable to my PC. Never had this problem before or after with the 8gb c6 card.
And, if nothing else ... I spent 30 bucks for a cool ass blue stripe! Lol.
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I have thoroughly tested the class 4 sd card from transcend sold by Newegg. They work with everything I have put the NT through and work very well with playing video from SD. Work very well with Acclaim 1.4.1 revert to 1.4.0 I just shot a video of this and the new SD card root process.

64GB Micro Sd Card £6.49

I found an amazing deal for a 64GB Micro Sd Card on ebay.
The seller has plenty of feedback and also offers same day dispatch only £6.49 free delivery.
UK seller and also includes adapter too.
Grab a bargain.
http://m.ebay.co.uk/itm/271392640544?nav=SEARCH
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From the description:
"The speed and capacity will vary, with each having a minimum of 4GB guaranteed useable capacity even though it may show there is more available"
Just keep that in mind when purchasing.
"Micro SDXC Memory Card and Adapter with up to 64GB Capacity"
well, for those who like to gamble...
Just pay the $40 or so from amazon and get the real deal, way too many scandals on ebay like this.
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"A fool and his money are soon parted"
Kawaisa said:
"A fool and his money are soon parted"
Click to expand...
Click to collapse
Or if it sounds too good to be true it probably is!
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To be far i bought the same one myself ready for buying this phone this weekend. Put it in and had no problems with it. Full amount of memory but of course its up to everyone how they feel.
Just wanted to share the deal for everyone who wanted to save a few quid.
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It's called 'fixing' a SD card. There's a way to format the card where it fools the system into thinking that it's 32gb or 64gb, so that's what it will show up as 32gb or 64gb on the phone or computer, but in reality it's only 4gb. Long time scam, nothing new here.
Yeah... this is really strange. Get a suggestion and buy it from Amazon - real stuff & real price!
I get the feeling it's not actually 64gb. Not to mention that the card may have a high failure rate.
Sent from my SM-N900P using Tapatalk
Acttualy if you check in alixpress.com you will find that 64GB card is 8 USD.
And that is a partly true. The other part is that 64 GB is written on the card but that capacity is 2 GB.
Once you max out the actual capacity your files get screwed beyond repair.
Worst gag gift ever!
I don't feel good on this one...
Are people seriously falling for these scams?
You honestly want class 10 high speed cards anyway as the Note 3 has USB 3.0... I sometimes like to take the card out the phone and plug it into my 3.0 adapter to get even higher transfer speeds on my 64gb card. (curious that the Note 3 slows the transfer rate down but whatever)
Just saw the thread title... Honestly, how stupid would you have to be?
Just don't do it. I learned my lesson with cheap SD cards. I had serious home button lag when waking the phone. Long story short switched to a class 10 Samsung 64gb and all lag is gone.
Inkedadrenaline said:
Just don't do it. I learned my lesson with cheap SD cards. I had serious home button lag when waking the phone. Long story short switched to a class 10 Samsung 64gb and all lag is gone.
Click to expand...
Click to collapse
+1 :good:
Never buy big cards except from top notch sellers like Amazon. Every single time I go for a cheap one on ebay it's a rip off. Every. Single. Time.
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Micro SD Card

So I'm looking to purchase a 64GB Micro SD from Amazon for my Z2. Which one among these would you rank the best?
Samsung EVO :
http://www.amazon.com/Samsung-Electronics-Adapter-MB-MP32DA-AM/dp/B00IVPU786
Samsung EVO Pro :
http://www.amazon.com/Samsung-Electronics-Adapter-MB-MG64DA-AM/dp/B00IVPU88U
Sandisk Ultra :
http://www.amazon.com/SanDisk-Extreme-MicroSDXC-Frustration-Free-Packaging/dp/B00DM1BDPK
Sandisk Extreme Plus :
http://www.amazon.com/SanDisk-Extreme-MicroSDXC-Frustration-Free-Packaging/dp/B00DM1BDPK
I bought Samsung 64 worth 3500 or so and it is amazing. From flipkart.
Sent From My Sony Xperia Z2 D6502 White
Well go for sandisk ultra or extreme plus...
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I have both the 64 GB Sandisk Extreme Plus and the 64 GB Samsung Pro. The only 633x card I don't have is the Lexar.
The Sandisk Extreme Plus is a bit quicker on reads (65MB/s) but a bit slower on writes (30MB/s)
The Samsung comes in at 50MB/s, sometimes getting up to 60MB/s on reads and consistently gets +40MB/s on writes, the quickest I've seen is about 45MB/s
These figures were tested using A1SD bench in phone, (Z2 seems to have an excellent SD card controller) these cards go much faster using a proper USB3 converter into a computer. The Samsung sustains a steady 70MB/s write speed and the Sandisk comes in at about 60MB/s write when tested in Windows 8.1
The Ultra is definitely a large step below, and the 128GB Ultra card is even slower.
With that said, I like the Samsung Pro and it's what I use in my device.
KyleSforza said:
So I'm looking to purchase a 64GB Micro SD from Amazon for my Z2. Which one among these would you rank the best?
Samsung EVO :
<can't post external links yet>
Samsung EVO Pro :
<can't post external links yet>
Click to expand...
Click to collapse
I'm probably mistaken, but is there really an EVO Pro or is that just the previous generation Pro?
The details on amazon seem to indicate it is just the last generation Pro
se1000 said:
I have both the 64 GB Sandisk Extreme Plus and the 64 GB Samsung Pro. The only 633x card I don't have is the Lexar.
The Sandisk Extreme Plus is a bit quicker on reads (65MB/s) but a bit slower on writes (30MB/s)
The Samsung comes in at 50MB/s, sometimes getting up to 60MB/s on reads and consistently gets +40MB/s on writes, the quickest I've seen is about 45MB/s
These figures were tested using A1SD bench in phone, (Z2 seems to have an excellent SD card controller) these cards go much faster using a proper USB3 converter into a computer. The Samsung sustains a steady 70MB/s write speed and the Sandisk comes in at about 60MB/s write when tested in Windows 8.1
The Ultra is definitely a large step below, and the 128GB Ultra card is even slower.
With that said, I like the Samsung Pro and it's what I use in my device.
Click to expand...
Click to collapse
I have the same and I love it.
Sent From My Sony Xperia Z2 D6502 White
KyleSforza said:
So I'm looking to purchase a 64GB Micro SD from Amazon for my Z2. Which one among these would you rank the best?
Samsung EVO :
http://www.amazon.com/Samsung-Electronics-Adapter-MB-MP32DA-AM/dp/B00IVPU786
Samsung EVO Pro :
http://www.amazon.com/Samsung-Electronics-Adapter-MB-MG64DA-AM/dp/B00IVPU88U
Sandisk Ultra :
http://www.amazon.com/SanDisk-Extreme-MicroSDXC-Frustration-Free-Packaging/dp/B00DM1BDPK
Sandisk Extreme Plus :
http://www.amazon.com/SanDisk-Extreme-MicroSDXC-Frustration-Free-Packaging/dp/B00DM1BDPK
Click to expand...
Click to collapse
Sandisk Extreme Plus. Don't buy samsung's SD cards.
Uclydde said:
Sandisk Extreme Plus. Don't buy samsung's SD cards.
Click to expand...
Click to collapse
My Sandisk 64GB EP microSD just failed and I had to sent it back for warranty. I personally wouldn't recommend those cards.
se1000 said:
I have both the 64 GB Sandisk Extreme Plus and the 64 GB Samsung Pro. The only 633x card I don't have is the Lexar.
The Sandisk Extreme Plus is a bit quicker on reads (65MB/s) but a bit slower on writes (30MB/s)
The Samsung comes in at 50MB/s, sometimes getting up to 60MB/s on reads and consistently gets +40MB/s on writes, the quickest I've seen is about 45MB/s
These figures were tested using A1SD bench in phone, (Z2 seems to have an excellent SD card controller) these cards go much faster using a proper USB3 converter into a computer. The Samsung sustains a steady 70MB/s write speed and the Sandisk comes in at about 60MB/s write when tested in Windows 8.1
The Ultra is definitely a large step below, and the 128GB Ultra card is even slower.
With that said, I like the Samsung Pro and it's what I use in my device.
Click to expand...
Click to collapse
Thanks. Going to order EVO Pro. :good: I just wanted to know how it fairs in our Z2, since S5 users were getting lower speeds than the ones you mentioned.
KyleSforza said:
Thanks. Going to order EVO Pro. :good: I just wanted to know how it fairs in our Z2, since S5 users were getting lower speeds than the ones you mentioned.
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Click to collapse
It seems as though the S5 (and definitely the S4 before it) suffers from a slower SD memory controller. I was actually surprised the Z2 could pull off the numbers it did, they are very fast speeds. I will say on the S5, if they're getting lower numbers, it's not because it's memory card limited. Both the Sandisk Extreme Plus and Samsung Pro UHS-1 cards are excellent and you really can't make a bad decision.
Where's the best place to buy these for UK customers
Sent from my HTC One X using Tapatalk
KrisPerry said:
Where's the best place to buy these for UK customers
Sent from my HTC One X using Tapatalk
Click to expand...
Click to collapse
I got mine here:
http://www.mymemory.co.uk/Micro-SDX...Android-Micro-SD-(SDXC)-Class-10-UHS-1-30MB_s
I didn't manage to find a lower price for it in UK...
even though I'm not in UK it arrived in 5 working days...so I think in UK it's delivery times are around 1-2 working days.
intersecting
I was thinking about the Sandisk Extreme Plus 64 GB and Sandisk Ultra 128 GB but since I'm not using that much apps as I did on my 64 GB iPhone I decided to get the Extreme Plus also because of the huge difference in read/write speeds compared to the Ultra.
I didn't experienced any problems with the card. The only disadvantage is that I cannot use it in my tiny thumb drive since it only supports microSDHC but in fact I never needed it yet since Android supports MSC and with the tiny USB-microUSB cable that came with the SWR10 SmartBand everything is fine
an3k said:
I was thinking about the Sandisk Extreme Plus 64 GB and Sandisk Ultra 128 GB but since I'm not using that much apps as I did on my 64 GB iPhone I decided to get the Extreme Plus also because of the huge difference in read/write speeds compared to the Ultra.
I didn't experienced any problems with the card. The only disadvantage is that I cannot use it in my tiny thumb drive since it only supports microSDHC but in fact I never needed it yet since Android supports MSC and with the tiny USB-microUSB cable that came with the SWR10 SmartBand everything is fine
Click to expand...
Click to collapse
There is Sandisk Ultra 128GB and Extreme 64GB and Extreme Plus 64GB. I believe the card reader on z2 should not support the Extreme Plus speed(80MB/s read & write) so you just need to get an Extreme 64GB(40MB/s read & write). The Ultra ver should be around 40MB/s read with only 10MB/s write.
Basically, the read speed on z2 on Ultra/Ext/ExtP is just about the same, the huge different is only at write speed. If budget isn't a concern and think about future upgrade like z3/z4 probably would support higher speed, you can just get the Extreme Plus.
How do you all use it?.....fat32 or is it working with ntfs?
Try EXFAT
Sent from my AWESOME Xperia Z2!
Samsung Pro all the way, Sandisks are just a nightmare and are avoided at all costs over in asia
Luhccas-X10 said:
Try EXFAT
Sent from my AWESOME Xperia Z2!
Click to expand...
Click to collapse
Exfat is great, mines a 64gb Samsung evo. But you wont be able to see it in certain ROMS.
The ones that I tested were:
-CM11 Sabermod
-PA Sabermod
-CrDroid
-Vanir? (I think.)
All the rest work fine with it (for me) including stock and stock based ROM's.
Ok thanks for the info,right now I'm with stock rom and working fine.
TheEndHK said:
There is Sandisk Ultra 128GB and Extreme 64GB and Extreme Plus 64GB. I believe the card reader on z2 should not support the Extreme Plus speed(80MB/s read & write) so you just need to get an Extreme 64GB(40MB/s read & write). The Ultra ver should be around 40MB/s read with only 10MB/s write.
Basically, the read speed on z2 on Ultra/Ext/ExtP is just about the same, the huge different is only at write speed. If budget isn't a concern and think about future upgrade like z3/z4 probably would support higher speed, you can just get the Extreme Plus.
Click to expand...
Click to collapse
I have the Sandisk Extreme Plus 64GB, the Ultra 128GB and Samsung Pro 64GB. Benched all three and the Ultra is definitely the slowest by a good margin. The Sandisk Extreme Plus was slightly quicker on reads than the Samsung (50Mbps read / 40 Mbps write) , but the Samsung was a bit quicker on writes (45Mbps read / 45 Mbps write). The Samsung seemed to be more consistent as well. This was using A1 SD Bench. Not going to swap out cards and run them all again so you'll just have to take my word for it.

MicroSD Card - Recommendations?

I am looking to buy a MicroSD card - 64Gb or 128Gb (if the price is right) and am looking for recommendations. I had purchased a cheap, generic 64Gb card., which worked fine out of box. Within a month it began to have errors and finally failed.
My goal is to use this as media storage - books and comics mostly. So speed is not an essential requirement.
Anyone have any suggestions?
I've been using this Samsung Evo Class 64GB Micro SDXC Card since the tablet was released. It seems to have decent speed and I haven't had any problems with it yet. There's also the Pro version for an extra $20 that apparently does 90 MB/s.
MidgetMob said:
I've been using this Samsung Evo Class 64GB Micro SDXC Card since the tablet was released. It seems to have decent speed and I haven't had any problems with it yet. There's also the Pro version for an extra $20 that apparently does 90 MB/s.
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Click to collapse
Thanks, @MidgetMob, that seems to be the way to go. Grateful for your advice.
Just ordered the 64gb Evo Pro.
koop1955 said:
I am looking to buy a MicroSD card - 64Gb or 128Gb (if the price is right) and am looking for recommendations. I had purchased a cheap, generic 64Gb card., which worked fine out of box. Within a month it began to have errors and finally failed.
My goal is to use this as media storage - books and comics mostly. So speed is not an essential requirement.
Anyone have any suggestions?
Click to expand...
Click to collapse
By and far, the 64GB G.SKILL microSD is one of the best out there, with amazing speeds, a stellar lifetime warranty, and a ridiculously low price ($24 for the next 72 Hours). You will never have to worry about your card failing since it will be replaced even if it fails five years from now. And it absolutely blows the EVO out of the water in terms of speed. Testing with A1 SD Bench on my Shield Tablet, I'm getting 72.00MB/s Read & 38.64MB/s Write with mine. I store almost all the significantly large apps on the microSD.
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231652&cm_re=microsd-_-20-231-652-_-Product
aenews said:
By and far, the 64GB G.SKILL microSD is one of the best out there, with amazing speeds, a stellar lifetime warranty, and a ridiculously low price ($24 for the next 72 Hours). You will never have to worry about your card failing since it will be replaced even if it fails five years from now. And it absolutely blows the EVO out of the water in terms of speed. Testing with A1 SD Bench on my Shield Tablet, I'm getting 72.00MB/s Read & 38.64MB/s Write with mine. I store almost all the significantly large apps on the microSD.
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231652&cm_re=microsd-_-20-231-652-_-Product
Click to expand...
Click to collapse
That's a nice price for 64GB. As for the warranty, the Evo is 5 years. Of course it's not as good as a lifetime warranty, however 5 years isn't bad either imo.
Reads and writes are quite nice, but how are the IOPS?
I did pick up and have been using a Samsung and it has worked fine. But at that price, I think that I will grab a G.Skill as well. (Can't have too much tech!)
Thanks, everyone!
MidgetMob said:
That's a nice price for 64GB. As for the warranty, the Evo is 5 years. Of course it's not as good as a lifetime warranty, however 5 years isn't bad either imo.
Reads and writes are quite nice, but how are the IOPS?
Click to expand...
Click to collapse
Isn't MB/s to IOPS a straight conversion? Not sure about 4K Read/Writes since A1 doesn't include it in testing, and not sure what utility is best for testing on Ubuntu. And not sure if the card reader would provide reliable results given its age.
I'm testing copying over files to test write speeds. I copied over 3.92GB of files (4,214,000 Bytes) in 284 seconds from the internal storage to the G.SKILL (AVG: 14.15MB/s). There were probably slight lapses due to copying multiple files, however. Tried copying a single 429MB file (450,687,000 Bytes), and it took 19 seconds (AVG: 22.6MB/s).

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