What is the best micro sd card to use on the phone? UHS1 or UHS3?
Depands on what u want to do with it. Uhs3 is only required while recording high-bitrate 4K videos and AFAIC bitrates are rather lower on android phones than on professional cameras. As I'm not going to record much 4K content (prefer 1080p with EIS) and Uhs3 cards are also twice as expensive, I bought Samsung Evo+ (Uhs1) and its perfectly fine so far. + u always have some high-speed internal storage to record 4K if u want, and then transfer it to sd
I bought a Sandisk Extreme Plus UHS speed 3/V30 and I tested the SD card on PC and it does get about 90MB/s read/write. However, the XZ seems to bottle neck at 33mb/s both up and down for me on A1 sd bench. I suppose it's on a USB2 interface, which would cap it around 40MB/s real world. So no need to for an uber card for sequential writes. Any better random read/write is always potentially useful for smoothness though I guess ^^.
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My local retailer already has stocks for the 32GB Sandisk MicroSD Class 2 card, I know sandisk under rates their cards but Im wondering if anyone has this specific microSD card can tell me how fast it read/writes if its inside the phone..
If possible post some benchmark numbers and the name of the benchmark, no actual screenshot needed, I just want a basis of comparison so my current 16GB class6 Team brand. I really need the space more than the speed though.
Haven't checked the speeds, but I can watch 720p video from my Sandisk Class 2 card, can't think of a use-case scenario where you need to read quicker than that. If you're writing large quantities of data to the phone very often the write speed may be an issue, but I suspect many people are like me and the only time they do that is when they first load their music collection onto the card.
NZtechfreak said:
Haven't checked the speeds, but I can watch 720p video from my Sandisk Class 2 card, can't think of a use-case scenario where you need to read quicker than that. If you're writing large quantities of data to the phone very often the write speed may be an issue, but I suspect many people are like me and the only time they do that is when they first load their music collection onto the card.
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Yeah, first load of music/movies into the card.
Please also remember that there is no standard way of measuring MicroSD speeds at the moment and the present system only really relates to the write speed. For playing content they will all be the same it is when recording HD video that the faster cards come into their own. I have also heard that all class 2 are actually class 4.
I just got the card now and the read speeds as tested by crystal disk is twice as fast as my Class 6 16GB the write speed is only slower at sequential w/c is 4.6MB compared to the 5.xx mb that my class 6 did but all the other write speeds are more than 2x faster!
$88 well spent!!
Yes its still $88 here and its the cheapest you can get!
For more information refer this link.
http://en.wikipedia.org/wiki/MicroSD
Hi all,
What is the maximum capacity Micro SD card size on the TF and also, what Class type do I need?
Thanks in advance
32 gb has always been the limit.
OK thanks, but what 'class' type? I see class 4 and 10 advertised?
well the class is the write speed of the card. The higher the number the faster the speed with 10 being the fastest. I use a class 4 that i had from my thunderbolt and that works just fine
Dont think it matters what class, it's just the write speed of the sd card.
And what all can you use this SD memory for?
Class just specifies the maximum write speed, but with day to day use in the transformer (other than transferring the initial media) it's the read speed that's the most important. You''ll be storing and opening your media from it (music, pictures, videos and PDFs or other e-reader formats most often). Usually a card with fast write will have fast read speeds as well but there can be some anomalies with certain cards so it's not always so clear cut. In my experience anything above a class 4 seems to work just fine. If you're working with a lot of larger video files though probably class 6 or above would be better (and as it's also a little more future-proofed). I would always prefer to go with a named brand class 4 or 6 rather than a non branded class 10 though.
Robert
rwniel said:
Class just specifies the maximum write speed, but with day to day use in the transformer (other than transferring the initial media) it's the read speed that's the most important. You''ll be storing and opening your media from it (music, pictures, videos and PDFs or other e-reader formats most often). Usually a card with fast write will have fast read speeds as well but there can be some anomalies with certain cards so it's not always so clear cut. In my experience anything above a class 4 seems to work just fine. If you're working with a lot of larger video files though probably class 6 or above would be better (and as it's also a little more future-proofed). I would always prefer to go with a named brand class 4 or 6 rather than a non branded class 10 though.
Robert
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Wrong its the minimal write speed. You use many words but give wrong info
Kaiser Chief said:
Wrong its the minimal write speed. You use many words but give wrong info
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You use few words, but flame plenty. Be polite please...
Kaiser Chief said:
Wrong its the minimal write speed. You use many words but give wrong info
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Click to collapse
Even that isn't the whole story because it's incomplete - the class of the card minimum sustained write speed of the card under optimal conditions (i.e. a brand new and completely unfragmented card). I'm sure someone else can improve on that definition further!
As to what speed of card you need, from sdcard.org:
Class 2 : H.264 video recording, MPEG-4, MPEG-2 video recording
Class 4: MEPG-2 (HDTV) video recording, digital still camera (DSC) consecutive photo shooting
Class 6: Mega-pixel DSC consecutive photo shooting, professional video camera
Class 10: Full HD video recording, HD still picture consecutive shooting
Planning on doing any of these with your TF?
I've been using good quality Sandisk Class 2 cards in all my Android devices since the original T-Mobile G1, and *never* had an issue with them. Plus when testing, I usually get a write speed of around 7.5MB/s.
Regards,
Dave
I use a class 4 16gb and its fine. No problems. I think the faster classes are over rated. I typically try to find a class 4 or 6. Both work great. Don't waste your money.
You can get a 16gb for about $25 and a 32gb for around $40
Asus Transformer 3.1 pwnd
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FAssuming Asus implemented SD 2.0 standard, a 32 GB maximum storage capacity is your limit for any SDHC memory card. You can read more about it here: link.
As for which class you buy, it depends on what you're using the memory card for. Foxmeister answered with a class rating list. Do note that the higher the class rating, the more expensive the memory card is. Like wise with storage capacity. I recently bought my PNY 32 GB microSDHC class 10 memory card from buy.com for about $57. Caveat emptor with fake ones on eBay, especially ones shipping from China.
hoang51 said:
FAssuming Asus implemented SD 2.0 standard, a 32 GB maximum storage capacity is your limit for any SDHC memory card. You can read more about it here: link.
As for which class you buy, it depends on what you're using the memory card for. Foxmeister answered with a class rating list. Do note that the higher the class rating, the more expensive the memory card is. Like wise with storage capacity. I recently bought my PNY 32 GB microSDHC class 10 memory card from buy.com for about $57. Caveat emptor with fake ones on eBay, especially ones shipping from China.
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yep, picked up one of those "fakes on eBay". That really stunk.
I am going to buy myself a 64GB micro sd card. I guess I will go with sandisk. But as there are certain sd types there come certain speeds. Such as UHS-ll, UHS-I ,and microSDXC. Now I want to make sure that my phone (SM-G3858) Galaxy Beam 2 is able to do r/w at certain speed levels. But how can I determine that? How can I check if the sd card slot takes UHS-I? I can do a micro sd card speed check when I already bought the sd card (with some apps). But is there any way to check the speed compability BEFORE you even buy the sd card?
I did 3 speeds test on my kingston 18GB MicroSDHC/SDHC Class 10 and the sd benchmark tests were ranging from (max): Read 401,31MB/s Write 10,45MB/s (400 seemed a lot to me, but thats what it said) So that would mean my phone supports at least UHS-l?
I was thinking to buy either the Sandisk Extreme at 45r/45w, the Sandisk Ultra Plus at 40r/lower write or the Sandisk Ultra at 30r/lower write. Or should I go with another brand? Any help is appreciated
thanks
:good:
EDIT: After searching for several hours to find the best 64GB micro sd card I decided to go for the Samsung Evo 64GB. It has full 5 star reviews on amazon and the price was way better than the Sandisk extreme plus. (I paid 37 euros including shipping) This is the best review I found:
"This is a very fast card, particularly suited to not only transferring files quickly but also running as a phone or tablet card for applications as well.
In phones and tablets one of the most important things is not just the transfer speed but also the IOPs that the card can deliver. Many class 10 cards have great transfer speeds but terrible and I mean terrible IOPs, often a 5 year old card easily out performs them in IOPs.
This card delivers in both areas, fast class 10 transfer speeds 23mb read, 15mb write but also 482 write IOPs and 1668 read IOPs.
That's IOP speeds that are slower than an SSD but way faster than a hard disk. Bare in mind that some class 10 cards give 4 write IOPs and you can see why I'm impressed. The only card I have seen outperform it in IOPs it the SanDisk Extreme Pro and they are seriously expensive and not available in 64gb. Testing against the third SanDisk I have, a 32gb ultra, is almost funny as the ultra only gives 15 write IOPs under the same conditions, making this card 30 times faster.
What does this mean for normal use, well it translates into an excellent general purpose card, that even if it doesn't have the official fastest transfer speeds will actually perform much better in the real world. Which is why its getting such rave reviews on here for speed (so long as you get a genuine one!)
This was tested in my Dell Venue 8 tablet using the built in card reader. For the techies (if you've got this far then I assume you are)I am actually using it to run Server 2012 virtual machines in VMWare workstation and the performance is surprisingly good, I would even call it snappy!
Full Crystalmark disk scores below.
Sequential read 23.66mbs write 16.03 mbps
512kb random read 23.25mbs write 15.67 mbps
4k random read 6.40mbps write 1.850 mbps
4k random qd32 6.65mbs write 1.92 mbps
Parameters 5 iterations 1000mb sample size.
Tested on the 64gb Samsung Evo microsdhc."
So anyways..At one point I´ll wait until the price of the Sandisk 128 GB Ultra plus card drops, then check for benchmarks and try out that one. Enjoy the info, im off
Sandisk is having quality issues with 64Gb cards, with many consumers reporting dead cards in a few months.
The Samsung you have choosen is awesome, along with transcend which are rock solid.
http://www.newegg.com/Product/Produ...transcend_64gb_microsd-_-20-208-927-_-Product
https://www.youtube.com/watch?v=et3gTrPUwC4
I had a Sandisk Extreme Plus 64GB at hand from a year ago. The speed rated was 80mb/s read and 50 mb/s write. However, with the A1 SD Bench software, I can only get 34 mb/s read and 29 mb/s write at maximum in my new XZ.
I wonder if the speed is limited by the hardware of the phone. Are people getting much better results?
I think a lot of it has to do with degredation of SD cards. I'm using a samsung PRO+ 64gb that I bought in november 2015 along with my Moto X Pure, plus I have encryption on SD card enabled...so it goes super slow @ 18mb/s read and write.
If you want better confirmation I'd try to test the same card in a different device, perhaps.
maidguitar said:
I think a lot of it has to do with degredation of SD cards. I'm using a samsung PRO+ 64gb that I bought in november 2015 along with my Moto X Pure, plus I have encryption on SD card enabled...so it goes super slow @ 18mb/s read and write.
If you want better confirmation I'd try to test the same card in a different device, perhaps.
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Thanks. Could u try it in ur xz or any sony phone?
Specially just for you, I did a test with my gf's HTC M9. I used SONY microsd-xc, 128gb, uhs-1 class10 advertised 70mb/s card. The M9 did 73mb/s read, 19mb/s write. My XZ, after I turned off SD decryption, did 29mb/s read and 19mb/s write. So yeah xperias probably have slower SD card implementations. But, I only keep music/photos/videos on the SD card and nothing else, so it doesn't really effect me.
energydidi said:
I had a Sandisk Extreme Plus 64GB at hand from a year ago. The speed rated was 80mb/s read and 50 mb/s write. However, with the A1 SD Bench software, I can only get 34 mb/s read and 29 mb/s write at maximum in my new XZ.
I wonder if the speed is limited by the hardware of the phone. Are people getting much better results?
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Manufacturer-quoted SD card read and write speeds are usually burst speeds, not sustained speeds which are far, far lower. Are you sure you're testing the burst speed, and not the sustained speed?
Sony have since z3c implemented under par SD readers compared to competition. It's quite poor. I had hoped this top of the line Sony would be different. Unfortunately not
Android Snapdragon slow UHS SD interface is a joke
It's the junk Snapdragon SD reader interface bus, not even usb3 just backwards slow. compared to the in-house NVME Apple interfacebus. That destroys all CRAP dragon phones. APPLE has the resources to include a 1 GB a sec buss while crapdragon Android devices have junk for SD interface. Even Samsung's UHS bus is junk compared to Apple. Your encrypting and stuttering Android phone is crap always will be. People edit 4k seemlesly on the IPhone yet on Android it's like sucking pizza through a straw. Atrocious blame it on patents and royalties and guess who has all the best.? Hint =Mac...
Dear forum,
I want to know if XZP is able to support UHS-II speeds for the SD card. I'm thinking in acquire this one Samsung 64Gb but it's just UHS-I. This will be OK to save 4k video without problems?
I don't want to buy a UHS-II card (which are notabily more expensive) if the phone only supports UHS-I speeds...
Thank you! Regards!
The phone supports only UHS-I speeds, and it will never support UHS-II. You can still buy an UHS-II card if you want, since they are backwards compatible, but you will be capped at the UHS-I speeds. No phone and phone chipset have implemented UHS-II support yet.
Where did you learn about the UHS-I?
Artyomska said:
The phone supports only UHS-I speeds, and it will never support UHS-II. You can still buy an UHS-II card if you want, since they are backwards compatible, but you will be capped at the UHS-I speeds. No phone and phone chipset have implemented UHS-II support yet.
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How did you learn that it only supports UHS-I? I can't find any information other than "SDXC supported". So, in theory it can hold up to 2TB, but where did you learn about the UHS-1?
I've found this thread a little bit late, but for all followed user: The Generation 2 need a second raw of contacts. If the phone has only one raw, it could not support Gen. 2
Not sure, but I have one wich writes up to 90MB/s and reads up to 100MBs (Samsung EVO Plus U3 SDXC I 256GB) (tested in PC) and from SD to internal (reading) I've seen 80MB/s and from internal to SD (writing) most times is about 50MB/s but sometimes it gets higher, not sure if its a limitation or just the pone was busy and the reading speed from internal was slower than it can be
Anyway I doubt it gets much faster with better SD, and that one is actually cheap comparing with others
work with v30 for 4k
UHS Speed Class 1 designates the performance option designed to support real-time video recording with a UHS-enabled host device. UHS Speed Class 3 designates the performance option designed to support real-time video recording with a UHS-enabled host device.
go here https://www.sandisk.com/about/legal/hd
@prodigalgypsy https://www.qualcomm.com/products/snapdragon-835-mobile-platform
As you can see in the spec sheet, the 835 mobile platform supports .
UFS: UFS2.1 Gear3 2L
SD: SD 3.0 (UHS-I)
So UHS-I speeds are the highest you can get.