Does anybody know if this tablet actuaklly supports UHS-1, while mean that it uses the UHS bus and thus cann write/read with this speeds?
I do not ask if such sd cards work in the tablet, which they do. i want to know if the tablet can use the full performance potential.
I did a speed test with a benchmark app and it seems it doesn't support the full speed of my uhs-1.....
I should try with other test apps
Related
Hi all,
I need your opinion. I'm planning to buy a Sandisk 512MB SD Card. How much does it compare with the 256SD Card with regards to speed? Is reading/writing much slower because of its bigger size? BTW my device is XDA. Thanks
My understanding of speed diffs
I don't think 256 vs 512 will make speed differences. The speed differences come between specific cards. My brief research yesterday suggested to me that SanDisk are kinda slow, even the Ultra II cards. It seems the fastest card, consistently, is the Panasonic. I have a plain 256MB sandisk card it PocketMechanic benchmarks it at 0.7x. I will test my new Panasonic card when it arrives later today (hopefully!).
Just for comparison, Lexar 32x cards are rated at 4.8MB/s, the Panasonic is supposedly rated at 10MB/s.
Another data point, I saw a discussion on Amazon.com reviews about the SanDisk 512 and somebody stating it was faster than the 256.
All this leads to: you really need to benchmark the specific cards you are interested in to see if they meet your speed needs. Speed is really variable, people talking about a single process that takes 45 minutes on one card and just like 1 minute on another card (brand).
Got the panasonic card
I got the panasonic card. It writes at "2.9x" as opposed to "0.7x" I got with the stock sandisk. That is better than 4 times the speed. Benchmarked using Pocket Mechanic on an XDA.
I'm familiar with the difference between the class 4 (4MB/s transfer speed) and the class 6 (6MB/s transfer speed). But is there any value in using a class 6 card on the XV6800 (regardless of size)?
I ask because I have a 4GB class 6 A-Data microSDHC card in my XV6800 right now and there is no problem at all with it. However, I am considering purchasing an 8GB class 4 Sandisk microSDHC card. So it got me thinking, even thought the A-Data card is capable of a faster transfer speed, that doesn't mean the XV6800 is ever actually using that extra speed. So would I see any slowdown if I moved to a "slower" spec'd microsdhc card?
I looked around for transfer speeds on the XV6800's microSD card slot and didn't come across anything.
Anyway have any data on this? Thanks in advance.
Depends some on what you are using it for but I doubt you will notice much of a difference. When transferring using a card and a card reader from your computer you may notice a difference but otherwise the interface in the phone itself doesn't seem to be all that fast anyway.
Don't get me wrong, I appreciate the comment, but that's why I'm asking if anyone has any actual data. The device either reads and writes to the microsd card slot above 4MB/s or it does not. I have not found a way to benchmark it so I'm looking for some actual detail. But thank you.
So I found an application that is supposed to measure the transfer speeds of the card slot on a Windows Mobile device. It's from Audacity Audio. The link on Softpedia is here.
I'm familiar with the application because I used the Palm OS version on my old Treo 700P. The problem is that he results always seem inconsistent and confusing.
In any event, I ran the test on two different microSD cards. The first is an empty 1GB Sandisk microSD card with. These cards don't have a "class" rating. The second is a 4GB AData Class 6 microSDHC card. I still had 2.5GB of the 4GB empty.
1GB
Wrt32bit/Wrt8KB/Read8KB
1105/330572/7943757
1105/335208/7710117
1123/366634/7710117
1030/311705/7489828
1070/306242/7489828
Avg
1086/330072/7668729
4GB
1462/109317/6393756
527/111408/6241523
1462/119482/4161015
517/85724/6241523
1581/126334/6241523
Avg
1109/110453/5855868
Honestly, the scores don't seem to make much sense. The read speeds all indicate north of 4MB/s and most of the time above 6MB/s. That's good. But the write speeds seem pointless. 330KB/s (.3MB/s) for the 1GB and 110KB/s (.1MB/s) for the 4GB ?!?!?! That doesn't seem right.
Anyway, any ideas would be welcome.
Write speeds are typically going to be a great deal slower for flash memory. And larger cards being even slower for writing makes a twisted sort of sense. All flash cards have "load-leveling" algorithms built into them to spread the writes across the flash disk in order to reuse locations as little as possible (flash memory cells have a limited lifetime). So the bigger the card, the more memory the load leveler has to manage. Of course, I could have it completely wrong....
Looking for people who have benchmarked their sd cards.
I have a fairly old 32gb generic sd card, it doesn't even have a speed rating on it.
I want to use bootmanager but I'm not sure this old card is fast enough to boot off of. I'm testing with SD tools on my tbolt
I get about 6 mb/s write speed
I get about 7-9 mb/s read speed in SD tools,
I know class 10 cards can vary wildly in performance and quailty
I am wondering if anyone has recommendations for the best quality card
with the highest read/write speeds, I want to get a new card but I don't want to pay a lot of money for a card that is only marginally better than mine.
i just downloaded that program to help you out,
got
7.0 read speed (peak was 8.6)
17.6 write speed
I am a long time user for boot manager and havent had any lag issues with this sd card
sd card is
32 gb
sandisk
class 4
came with my tbolt
Mini Review:
All these cards come at the speeds they're advertised at. HOWEVER, and this is very important!: It should be noted that the R/W speeds will differ greatly depending on if you're running exFAT or NTFS.
Benchmarks:
See below for the speeds, though you should keep in mind that your average tablet or phone will most likely throttle the speeds since the voltage output is way lower than on a desk/laptop.
Benchmarks for 128GB 45MB/s, 128GB 80MB/s, 200GB 90MB/s using exFAT:
Benchmarks for 128GB 45MB/s, 128GB 80MB/s, 200GB 90MB/s using NTFS:
I use my trusty Silicon Power USB 3.0 AIO card reader for these tests in case anyone is curious. See attached pictures below for reference when buying say off shady sites or retailers as fakes are easy to come by.
Thanks for the info!
Do you think there is any advantage in getting a microSD card with faster Read/Write speed. such as the Samsung Evo+ or Pro? or is the Read speed limited by the Shield K1's microSD slot?
If you are using marshmallow (6.0) the faster write speeds can be advantageous when using the SD card as internal storage. Apps on the SD card will use the SD card for writing temp files.
schmacky said:
Thanks for the info!
Do you think there is any advantage in getting a microSD card with faster Read/Write speed. such as the Samsung Evo+ or Pro? or is the Read speed limited by the Shield K1's microSD slot?
Click to expand...
Click to collapse
Depends on what you're after really. If you only plan on filling it up with Plex/media content, then speed shouldn't be an issue for most once it's there. But if you plan on writing 100GB worth of content back and forth daily, then I would recommend a faster sdcard.
If you plan on using it as internal storage in conjunction with the internal one (feature introduced with 6.0) then I would also recommend a faster card so it matches the eMMC onboard storage speed since it's faster than this sdcard I currently have, not to mention if you plan on gaming (Android and or Shield only games) a lot on this device. For emulathors and stuff this card is enough.
Has anybody some experience with one of those?
-SanDisk Extreme Pro microSDXC (up to 95MB/Sec, Class 10, U3)
-Kingston SDCA3/64GB microSDHC/SDXC (UHS-I U3, 90R/80W)
According to this fairly recent comparison and benchmarks, they are one of the best:
http://www.techfunology.com/electro...for-photography-action-cams-and-videocameras/
I will hopefully update the thread with the 128GB 80MB/s version as of tomorrow as I managed to snag one for a little over 50€ (Remember, EU here! We have no luxury with 200GB microSD cards being sold for the same price or having 1 gallon of whatever costing the same as 1L of equivalent substance).
edit: no package until monday... sadface.jpg.
poo any decent 64gb cards? was looking at the Samsung evo or SanDisk Ultra 64 GB up to 80 Mbps
@ady702: actually yes.
I made a short benchmark of my 64GB Kingston card (that I mentioned above already):
Results: SD Card - Performance comparison ExFAT vs. NTFS (Benchmark)
Vankog said:
@ady702: actually yes.
I made a short benchmark of my 64GB Kingston card (that I mentioned above already):
Results: SD Card - Performance comparison ExFAT vs. NTFS (Benchmark)
Click to expand...
Click to collapse
so the Kingston would be better than the other two? or is it down to the formatting?
It just means, the Kingston is good.
Though, the thread particularly only tells you that you should format sd cards as NTFS.
Hi.
I have a Sony Xperia Z2 with lollipop. The device is not rooted. I was using a sony 32GB Class 10 U1 micro SD card (SR-32UYA/TQ1). It is rated at 40MB/s read speed. The write speed is not mentioned. When I tested it with A1 SD bench I was getting a read speed of around 33MB/s and a write speed of around 15MB/s.
I just upgraded to a Samsung PRO 64GB Class 10 U3 Micro SD card. The Read speed is 90MB/s. The write speed is 80MB/s. When I tested it using A1 SD Bench i was getting read speeds of around 42MB/s and write speeds of around 40MB/s. This is half the advertised speed. Is this what I should expect from this kind of card? And what is the max read/write speed that the Xperia Z2 can handle? Thanks.
Its more of a device configuration thing
My Sandisk Sdcard is rated for 32mb/s but i get 50-60 because of the file system type, i/o scheduler and buffer cache sizes
R/w speeds have a bunch of factors and usually "rated speed" is A maximum of instead of what a user would ever see
Right! You will get those values when you put card into a card reader with USB 3.0 support. Beside the setting of IO scheduler and read ahead cache can effects 10-20% benchmark scores.
Hi, so what can u advise and tips when buying sd card. Thanks.
Envious_Data said:
Its more of a device configuration thing
My Sandisk Sdcard is rated for 32mb/s but i get 50-60 because of the file system type, i/o scheduler and buffer cache sizes
R/w speeds have a bunch of factors and usually "rated speed" is A maximum of instead of what a user would ever see
Click to expand...
Click to collapse
Would you please post your settings?
Hello!
As today, in 2018, a A1 rated micro SD Card is worth to use with the Xperia Z2?
Thank you!