topic Re: Micro SD card: Maximum Supported Read/Write Speed Rating? in XPERIA archive

Micro SD card: Maximum Supported Read/Write Speed Rating?

J2014 — Wed, 05 Mar 2014 23:55:54 GMT

I want to purchase a 64GB Micro SDXC card for my new Sony Xperia Z1 Compact and would like to get the fastest card (read/write speed) compatible with (i.e. useable by) the phone, but I do not want to waste money buying a card that has a faster read/write speed than the maximum speeds supported by the phone. What is the maximum read/write speed of the Xperia Z1 Compact for micro SDXC cards and what would you recommend?

Re: Micro SD card: Maximum Supported Read/Write Speed Rating?

Heresy — Thu, 06 Mar 2014 00:00:22 GMT

I use A1 SD Bench to test 2 Sandisk microSDXC card, the test speed:

64G Ultra: R 43.14MB/s, W 10.13MB/s

64GB Extreme: R: 43.20MB/s, W: 34.72MB/s

At least, Z1c should support 40MB/s R/W.

I am not sure if it support faster card well.

detail: http://goo.gl/WrsYYN

Re: Micro SD card: Maximum Supported Read/Write Speed Rating?

_alexdon_ — Thu, 06 Mar 2014 11:38:01 GMT

@Heresy wrote:

I use A1 SD Bench to test 2 Sandisk microSDXC card, the test speed:

64G Ultra: R 43.14MB/s, W 10.13MB/s

64GB Extreme: R: 43.20MB/s, W: 34.72MB/s

At least, Z1c should support 40MB/s R/W.

I am not sure if it support faster card well.

detail: http://goo.gl/WrsYYN

Yes,go for Sandisk.Xperia Z1 compact should have no problems with any speed class.Take a look here:

http://www.sandisk.com/products/memory-cards/sd/ultra-uhs-1-class10-30mbs/

Re: Micro SD card: Maximum Supported Read/Write Speed Rating?

Heresy — Thu, 06 Mar 2014 12:21:25 GMT

Sandisk Ultra serial cards is not faster.

The new 128GB card is only larger.

The faster card of Sandisk should be Extreme Plus

http://www.sandisk.com/products/memory-cards/microsd/extremeplus-uhs-i/?capacity=64GB

It may reach 80MB/s read and 50MB/s write in spec.

But I can not get one to test.

Re: Micro SD card: Maximum Supported Read/Write Speed Rating?

_alexdon_ — Thu, 06 Mar 2014 12:25:08 GMT

I did not say it is faster,I just gave him a link to Sandisk to have a look.

Re: Micro SD card: Maximum Supported Read/Write Speed Rating?

J2014 — Thu, 06 Mar 2014 16:33:10 GMT

Thank you both for your helpful replies, but my question is not really whether the highest speed 64GB micro SD cards are compatible or will work, because I know they will all work OK. My problem is that I don't want to waste my money buying a card which has faster write and read speeds than the maximum speed which the Sony Xperia Z1 Compact can write to or read from, but I don't want to buy a 64GB micro SD card which has slower maximum write or read speeds than the Sony, as I want the card to work at the fastest possible speed at which the Sony phone can write to it and read from it. I cannot find any information in the Sony Xperia Z1 Compact specification, user guide or white paper or from a phone call this morning to Sony Technical Support, who just said any Class 10 micro SD 64GB SDXC card will work (which of course I already knew anyway!) I get the impression that Sony themselves have no idea how fast the phone can write to or read from a 64GB micro SD card!

Re: Micro SD card: Maximum Supported Read/Write Speed Rating?

_alexdon_ — Thu, 06 Mar 2014 16:52:09 GMT

Be careful though that you might encounter some compatibility issues between some cards and xperias.The best peformance until now is given by sandisk or sony micro sd cards.

Re: Micro SD card: Maximum Supported Read/Write Speed Rating?

Heresy — Fri, 07 Mar 2014 00:21:40 GMT

I think the limits of Xperia Z1 Compact card reader may be 40MB/s R/W.

Because the Sandisk 64GB Extreme microSDXC card may reach 89.41MB/s Read and 58.51MB/s Write in some testing.

http://www.storagereview.com/sandisk_extreme_microsdxc_uhsi_review

Re: Micro SD card: Maximum Supported Read/Write Speed Rating?

kind3r — Fri, 07 Mar 2014 14:42:32 GMT

I just got 39.96MB/s Read and 31.85MB/s Write with a 32GB SanDisk Extreme Plus.

It's OK but I was hoping for faster writes.

Re: Micro SD card: Maximum Supported Read/Write Speed Rating?

Heresy — Fri, 07 Mar 2014 14:45:23 GMT

It looks that Sandisk Extreme card is good enough for Z1 Compact.

Extreme Plus doesn't work better.

Re: Micro SD card: Maximum Supported Read/Write Speed Rating?

kind3r — Fri, 07 Mar 2014 15:06:31 GMT

@Heresy wrote:
It looks that Sandisk Extreme card is good enough for Z1 Compact.
Extreme Plus doesn't work better.

Yeah, it was actually cheaper so no loss here

Re: Micro SD card: Maximum Supported Read/Write Speed Rating?

J2014 — Fri, 07 Mar 2014 15:30:36 GMT

That's very interesting kind3r - Did you measure these read write speeds with the micro SD card while it was actually plugged into the micro SD memory card slot on the Sony Xperia Z1 Compact mobile phone? I.e., were your read write speeds actually measured using test software running on the Z1 Compact itself?

Re: Micro SD card: Maximum Supported Read/Write Speed Rating?

J2014 — Sat, 15 Mar 2014 22:56:54 GMT

@J2014 wrote:
That's very interesting kind3r - Did you measure these read write speeds with the micro SD card while it was actually plugged into the micro SD memory card slot on the Sony Xperia Z1 Compact mobile phone? I.e., were your read write speeds actually measured using test software running on the Z1 Compact itself?

It would be very helpful if you could answer my question above about the details of the speed tests you conducted, as I want to purchase a SanDisk 64GB microSD card but I really don't know whether to get the Extreme or the much more expensive Extreme Plus, but I do want a micro SD card which will give the fastest possible write and read times which the Sony Xperia Z1 Compact can handle.

Re: Micro SD card: Maximum Supported Read/Write Speed Rating?

kind3r — Sun, 16 Mar 2014 10:11:24 GMT

Sorry for the delay, I used A1 SD Bench on the phone https://play.google.com/store/apps/details?id=com.a1dev.sdbench .

Re: Micro SD card: Maximum Supported Read/Write Speed Rating?

J2014 — Sun, 16 Mar 2014 17:50:39 GMT

Thanks kind3r - That's very useful information!

Re: Micro SD card: Maximum Supported Read/Write Speed Rating?

purplesnake46 — Tue, 30 Sep 2014 20:40:56 GMT

Does anyone know if a z1 is compatible with a samsung micro sdhc uhs-132gb pro the device uses 3.0 and 2.0 ports and the read speed is 90mb/s the write speed is 80mb/s anyone out there who can advise please? Also I got a cheap 32 gb card on ebay and certain videos it will not play others it will I tried formatting still the same, it plays music all right pictures are fine but when I formatted this card it is only in fat 32 format I cannot change the format in any way, again any advice appreciated.

Re: Micro SD card: Maximum Supported Read/Write Speed Rating?

avx — Sat, 13 Dec 2014 11:48:30 GMT

Samsung MicroSD cards are among the best, slightly better than their SanDisk priced equivalents. You can read online benchmarks and reviews.

Samsung even makes the internal Flash of the phone, and almost every other phone including iPhone, as they are the largest producer world wide.

Only companies that manufacture Nand flash are Samsung, Micron (Crucial) with Intel, SanDisk, Toshiba with Kingston. The rest buy from them and repackage under their own brand.

Correct me if Im wrong.

Re: Micro SD card: Maximum Supported Read/Write Speed Rating?

avx — Sat, 13 Dec 2014 11:52:22 GMT

However I dont think the phone's controller will let you get above 40-45 MB/s Read/Write. So no need for 90MB/s cards other than because most of them are MLC unlike the lower end TLC ones.

Either get Sandisk Extreme or Samsung Pro both are MLC based and will last much longer. The Samsung Evo and Sandisk Ultra are TLC based.