Sandisk Class 4 Speed differences... Even on the same card...? - HD2 Windows Phone 7 Q&A, Help & Troubleshooting an

If there is anyone, who owns Sandisk MicroSD 32GB CLASS 4 card and runs Windows Phone 7.5/7.8 on it, could you please post the benchmark results?
The actual is only CLASS 4 one. I've found, that some Class 2 owners have speed of 7-8MB/s in WP Bench.
I've unpacked a Class 4 one. On the first time I run test it showed about 7MB/s, but after phone reset/installing dualboot etc speed decreased to 4MB/s
Is it normal?
Many thanks for any advices!

i have class 2 and never have better results than 8 MB/s

I think I mean your post with WP Bench
I was talking about your benchmark post with 9.1MB/s result. The problem is I've got a two cards, which work TERRABLE (PATRIOT class 10 which gets <1MB/s in WP Bench and Transcend Class 6 which gets <2MB and freezes on some roms). I've ordered an class 2 Sandisk card, but the shop delivered me a class 4 Can't decide should I put it back and continue seeking Class 2 or it will be the same speed with it too... I've found a few posts with SanDisk 32GB Class 4 users and it seems to be slower than class 2.
Bit on the first time I've puted the card on my phone the speed was ~7mb/s. And I can't even say that the card was empty. I installed wp benchmark and put few gigs of music on it.

Strange test results...?
Right now, after I set dualboot the speed is constantly about 4.03MB/s. Is there explanation for this strange speed decrease?
Maybe re-formatting or even reseting phone acts somehow on the card? Maybe it's any kind of software bag?

Regarding a speed test of my Sandisk 32 GB Class 4 card with WP Bench Free see my post here http://forum.xda-developers.com/showpost.php?p=36920228&postcount=174
I (also) noticed that my phone slowed down. But I'm not sure if the card is to blame. Previously I had two partitions on the card, a small one for Android and the large one for WP7.5. In December I repartitioned the card with three partitions, two rather small ones for Android (to get newer and faster ROMs working - "NativeSD") and the third one for WP7.8 (my main system). But Windows Phone feels a lot slower now. The reason might be 7.8 being slower or it is caused by the three partitions or maybe even by the card getting slower, I don't know.
But I'm also interested to get a faster WP (again), so I asked other people to return their benchmark results with WP Bench Free in order to have some comparison and maybe a reason to buy a specific new card (32 GB or 64 GB, not smaller). Sadly no one published any result so far.
P.S.: With 7.5 WP Bench Free also returned approx. 4 MB/s, just like now, but the system felt way snappier compared to 7.8.

Some practical test results
Here are some practical test results from WP Bench and Android SD Tools (Sandisk 32GB Class 4, year 2012):
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I have noticed on my Sandisk 32GB UHS-1 that with dualbooting the speed is a lot less compared to without any partitioning. With dual boot i get around 4mb/s compared to with out it i got 6 mb/s

Suhaib10 said:
I have noticed on my Sandisk 32GB UHS-1 that with dualbooting the speed is a lot less compared to without any partitioning. With dual boot i get around 4mb/s compared to with out it i got 6 mb/s
Click to expand...
Click to collapse
Im with 8GB SanDisk Class 2 and WP7.8 - 6.47 MB/s

Related

Max Capacity and Performance Class for MicroSD card on TP

Ok, since i tell that money is not a problem.
I want to know what is the biggest and fastest Micro SD card available for the HTC Touch Pro.
Anyone can tell if have tried the 32 Gb SDHC Class 10??? or higher (if exists 64gb)...
Thanks in advance...
class 6 16GB is the fastest/biggest you can get.
Kingston has a 16GB, class 10 micro sd card. Is there any limit in class that the phone can handle?
Duwenbasden said:
class 6 16GB is the fastest/biggest you can get.
Click to expand...
Click to collapse
I think you are mistaken.
Follow this link...
wiki.xda-developers.com/index.php?pagename=Raph_Specs
the fuze will handle up to a 32gb sd card... here is all the info for the fuze, and any other AT&T device available at this time....
http://www.wireless.att.com/support/chooseDevice.do?universe=&make=All&dest=tutorials
i do tech support calls for AT&T mobility... i get alot of questions about these devices...
There is no 32GB card at the moment. I assumed you ask what can you get right now.
Yes...there is
amazon.com/SanDisk-Ultra-SDHC-32GB-Card/dp/tech-data/B00194101O/ref=de_a_smtd
and
gizmodo.com/5301931/sandisk-claims-title-of-worlds-fastest-32gb-sdhc-card
news from 2009....
jvitor83 said:
Yes...there is
amazon.com/SanDisk-Ultra-SDHC-32GB-Card/dp/tech-data/B00194101O/ref=de_a_smtd
and
gizmodo.com/5301931/sandisk-claims-title-of-worlds-fastest-32gb-sdhc-card
news from 2009....
Click to expand...
Click to collapse
That's great and all, but I hope you noticed that card won't fit in a Raphael.
palmboy5 said:
That's great and all, but I hope you noticed that card won't fit in a Raphael.
Click to expand...
Click to collapse
LMAO i couldnt stop laughing when i read this.
SD CARD LMFAO!!!!!!!!!!!
rofl i lol'd too. im sure it was an oversight or something. anyway im still curious if the device can even use the whole transfer rate offered by a class six. Can anyone confirm that this phone can utilize a class 6 to its full potential?
*so i read up that wiki. according to that then there is no point in getting anything over a class two since the top speed it hits with a class 6 is .5 MB/s and the class 2 bandwidth limit is 2Mb/s*
sooooo any thoughts on this?
sandisk does have a 32gb microsd.... but it's class 2 and $200
http://sandisk.com/products/mobile-memory-products/sandisk-microsdhc
not in stock now though.... it was a bit back....
neato, but if it was in stock wouldn't it have the same performance on our phone as a class 6? From what i wrote earlier, i believe our speed is capped by a hardware limitation so 4+ class speeds wont help?.
id really like an expert to confirm this.
I would also like an experts advice on this matter... I am stuck with a 2g micro card and am looking to buy the biggest one I can stick in my phone.
Thanks for any input.
Blind
Limited resources? Meet your match!
FYI
Link will take you to pricegrabber.com
http://tinyurl.com/2wftp3c
n-Joie!
BlindDude said:
I would also like an experts advice on this matter... I am stuck with a 2g micro card and am looking to buy the biggest one I can stick in my phone.
Thanks for any input.
Blind
Click to expand...
Click to collapse
Depends on how soon you want it. Also, I presume you are using a similar device to the TP... I was in a BestBuy recently and they had an 8gb microsd in-stock! The only place I was able to get a 16gb microsd(class 2), was online unfortunately. Of course, I did see a few 32GB usb sticks for under $100 and grabbed one up, several months ago...
Also, as physical proof that a 16gb card will work/be recognized:
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Does the class count?! This week i would like to buy a 16GB class 10 card?! will it work? i'm not interested in the speed. im just interested in it to work in the phone 4 downloading movies over the internet & such...
save money, get a slower class. 16 gb works.
Let's bring this thread up to date now in 2016 I can confirm 128gb and 200gb micro sd cards work in my T7272.

$44 SanDisk 32GB Mobile Ultra microSD [4/27]

ENDS TONIGHT, MAKE IT QUICK!
Well, I found this yesterday while browsing Amazon for some high speed MicroSD cards... and seeing how SanDisk is one of the highest rated manufacturers for these, as well as the usual price for this particular one, I figured I had myself a deal.
http://www.cellphoneshop.net/32san10clas.html
They already lowered the price dramatically, but an extra $10 off definitely helps. During the checkout, scroll down, and near the bottom left, you'll find the Promo Code/Coupon entry box. Enter the following for $10 off your order:
CPSMOM12
Final price came to $43.98 (Regular shipping method included in price).
Hope this helps those who want a high quality 32GB MicroSDHC for their device.
[Rumor has it that the Read speed on this particular card has an average of 30mbps... Only Lexar, so I've read, has been able to top that, but Lexar cards don't seem to last more than a couple of months with daily use.]
Managed to get a card. Thanks
Sent from my SGH-T989 using xda premium
Just ordered, then I saw this: http://www.amazon.com/SanDisk-Mobile-Ultra-microSDHC-SDSDQY-032G-U46/dp/B005SZ4X28
Is there a difference?
R1ptide said:
Just ordered, then I saw this: http://www.amazon.com/SanDisk-Mobile-Ultra-microSDHC-SDSDQY-032G-U46/dp/B005SZ4X28
Is there a difference?
Click to expand...
Click to collapse
Yeah, the card you posted above is only a Class 6 so the Read/Write speeds might be a tad bit lower than the Class 10 I posted about in the first post.
Both are still excellent cards.
ADDITION: I guess I forgot to inform that the card I advert'ed in the first post was a Class 10... my bad.
Agent Zach said:
Yeah, the card you posted above is only a Class 6 so the Read/Write speeds might be a tad bit lower than the Class 10 I posted about in the first post.
Both are still excellent cards.
ADDITION: I guess I forgot to inform that the card I advert'ed in the first post was a Class 10... my bad.
Click to expand...
Click to collapse
According to Sandisks website for the Ultra cards, all the 32gb are class 10 and the lower sizes are class 6.
?
Sent from my Samsung Galaxy SII using Tapatalk 2 Beta 5
Well, according to the picture on Amazon, from the link you shared, it's only a Class 6:
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It is, of course, possible that the art might be wrong as well.
ADDITION: I'll admit, when I was MicroSD shopping on Amazon, I came across the same product, but when I saw the "Class 6" on the image, it swerved me to the "Class 10" product I saw on their site, which obviously redirected me to the "CellPhoneShop" product I shared above.
Just got mine today!
Sent from my SGH-T989 using xda premium
Yeah got mine yesterday. Not really impressed with the benchmarks.
Comparison between this card and two 32GB Sandisk Class 4 cards. All programs were used in default settings. For crystaldiskmark the first number is read and the second is write. All cards were empty.
SD Card Tests
Sandisk 32GB Class 4 #1
CrystalDiskMark
Seq: 17.78 4.724
512K: 17.21 1.098
4k: 2.283 1.109
4kQ: 2.220 0.790
SD Tools
W: 4.7
R: 7.7
SD Card Tester
W: 3.47
R: 7.4
Antutu
W: 5.1
R: 24.5
Sandisk 32GB Class 4 #2
CrystalDiskMark
Seq: 17.61 6.253
512K: 17.71 1.139
4k: 2.335 1.274
4kQ: 2.564 0.860
SD Tools
W 4.8
R 8.0
SD Card Tester
W: 3.5
R: 7.38
Antutu
W 6.2
R 27.8
Sandisk Mobile Ultra 32gb Class 10
CrystalDiskMark
Seq: 18.39 11.69
512K 17.33 3.201
4k: 2.595 1.354
4kQ: 2.707 1.396
SD Tools
W 5.5
R 7.8
SD Card Tester
W: 6.81
R: 7.79
Antutu
W: 5.1
R: 22.0

Question about micro SD cards to go with this phone

I know what the different class ratings mean as far as write/read speeds go for a phone, but as a first time buyer of one, I was looking for recommendations as far as what class would best suit an S4, as I'm looking to purchase a 64 gig card where the prices can vary by a fairly large margin. Also, brand recommendations would be appreciated as well with anyone with real knowledge on the matter! Thanks! :laugh:
the best SD for SG is Samsung Class 10 MicroSD
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Amazon: http://amzn.to/Xz6rtz
Technical Details
Up to 24 MB/s read speed and 13 MB/s write speed
Water Proof - Can survive in sea water over 24 hours
Shock Proof - can withstand being run over by a 1.6 ton vehicle
Random comments:
Used it to extend it on my Samsung Galaxy S3 and works great.
Click to expand...
Click to collapse
As mentioned, "class 10", but be very careful there is a huge problem with cards that are being sold as class 10 cards that don't preform nearly to the specs that a class 10 card should. This is a problem that all card manufacturers are facing. It is due to many reasons, counterfeit cards, mismarked cards, substandard production, re-marked cards, etc... Even cards with packaging that looks legit, so, good luck.
I have a 64GB SanDisk UHS1 MicroSDXC card. It should work fine with the s4,right?
Sent from my Xperia Arc S using xda premium
Yes it will work fine
-- Sent from my Palm Pre using Forums
scott14719 said:
As mentioned, "class 10", but be very careful there is a huge problem with cards that are being sold as class 10 cards that don't preform nearly to the specs that a class 10 card should. This is a problem that all card manufacturers are facing. It is due to many reasons, counterfeit cards, mismarked cards, substandard production, re-marked cards, etc... Even cards with packaging that looks legit, so, good luck.
Click to expand...
Click to collapse
Samsung and sandisk should be reliable buys from samsung shouldn't it?
attbrandon said:
Samsung and sandisk should be reliable buys from samsung shouldn't it?
Click to expand...
Click to collapse
I would hope so, but with all of the problems I wouldn't count on it. I've bought many miro-SD cards in the past several months. I've bought Sandisk 32 GIG class 10 cards (or so they were represented) from Radio Shack, Amazon, and Best Buys. None of them benchmarked as class 10 when it came to Write speeds. They were all between 6 and 8 times write speed. I also bought a PNY 32 GIG class 10 card. It benchmarked at over 10X write speed and worked very well, however, it lasted about 2 weeks and crapped out. I've used Amazon basics and Samsung cards before, but they were 16 GIG cards and seemed to work well (I didn't benchmark them). If you do searches on Google about the issue or look at reviews for cards available on Amazon you can see how big of an issue it is.
When companies say like "up to 64GB", is that simply because that's the max that's available right now or is it a physical limit? When 128GB microSD cards come out, wouldn't they be compatible too since they'll still be SDXC?
GTRagnarok said:
When companies say like "up to 64GB", is that simply because that's the max that's available right now or is it a physical limit? When 128GB microSD cards come out, wouldn't they be compatible too since they'll still be SDXC?
Click to expand...
Click to collapse
Yes, that is why they say that. I can say that having been amongst the first to purchase 4, 8, 16, 32 and 64GB cards at times when manufacturers said they did not work - they all did.

Abnormally low read/write performance with Samsung MicroSD card

So I bought this SD card: http://www.samsung.com/uk/consumer/memory-cards-hdd-odd/memory-cards/micro-sdhc-pro/MB-MGCGB/EU
Running A1 SD Bench I got speeds of 12MB/s and 3.8MB/s when it should be close to 70MB read and 20MB/s writes.
Any reason why it could be running that slow other than a faulty drive? Is there something I can do do improve this?
-Sweeper_ said:
So I bought this SD card: http://www.samsung.com/uk/consumer/memory-cards-hdd-odd/memory-cards/micro-sdhc-pro/MB-MGCGB/EU
Running A1 SD Bench I got speeds of 12MB/s and 3.8MB/s when it should be close to 70MB read and 20MB/s writes.
Any reason why it could be running that slow other than a faulty drive? Is there something I can do do improve this?
Click to expand...
Click to collapse
Hi , there is some incompatiblity issues with Note 4 and Class 10 and UHS Speed Class 1 (U1) SD cards , even i have this product http://www.sandisk.com/products/memory-cards/microsd/ultra-plus-class10-for-android/?capacity=32GB and even it does not working with my N4 as stable you can check my tread here http://forum.xda-developers.com/note-4/help/please-help-strange-problem-t3030198 to get some idea about the incompatiblity , now i am using an Sandisk 8 GB class 2 card without having an any issue and my readings is with A1 SD Bench is Read 21,37 MB/s and Write 11,12 MB/s (8 GB class 2 card) , IMO , it is a incompatiblity issue that , Samsung must apply an update to fix this issue , and i also mentioned about this status even at least 4 times in my thread
so i hope you, if just find a solution please share with us
Samsunggalaxynoteuser said:
Hi , there is some incompatiblity issues with Note 4 and Class 10 and UHS Speed Class 1 (U1) SD cards , even i have this product http://www.sandisk.com/products/memory-cards/microsd/ultra-plus-class10-for-android/?capacity=32GB and even it does not working with my N4 as stable you can check my tread here http://forum.xda-developers.com/note-4/help/please-help-strange-problem-t3030198 to get some idea about the incompatiblity , now i am using an Sandisk 8 GB class 2 card without having an any issue and my readings is with A1 SD Bench is Read 21,37 MB/s and Write 11,12 MB/s (8 GB class 2 card) , IMO , it is a incompatiblity issue that , Samsung must apply an update to fix this issue , and i also mentioned about this status even at least 4 times in my thread
so i hope you, if just find a solution please share with us
Click to expand...
Click to collapse
Thanks but isnt this problem exclusive to Sandisk MicroSD cards?
-Sweeper_ said:
Thanks but isnt this problem exclusive to Sandisk MicroSD cards?
Click to expand...
Click to collapse
No because my SD card which is working without a problem with my note 4 (8gb Class 2) is also a Sandisk Card , also Many of other users has reported similar issues with other brands as well (with class 10 and U1 SD cards) , even some of brands are unfortunately Samsung
i have 128 gb san disk with no problems about read and write , it is triple faster than my phone memory ! Cheers
Not sure what speed you can expect to get with your micro sdcard.
However I do know that the maximum speed quoted 70 / 20 will only be achieved on devices with UHS I support.
To the best of my knowledge no smartphone has this interface support, you will only get these speeds on a device with UHS I support such as some cameras
Sent from my SM-N910F using XDA Free mobile app
paul_59 said:
Not sure what speed you can expect to get with your micro sdcard.
However I do know that the maximum speed quoted 70 / 20 will only be achieved on devices with UHS I support.
To the best of my knowledge no smartphone has this interface support, you will only get these speeds on a device with UHS I support such as some cameras
Sent from my SM-N910F using XDA Free mobile app
Click to expand...
Click to collapse
Interesting. Could anyone using a Samsung EVO or Pro microSD with Note 4 run A1 SD Bench and share the results?
-Sweeper_ said:
Interesting. Could anyone using a Samsung EVO or Pro microSD with Note 4 run A1 SD Bench and share the results?
Click to expand...
Click to collapse
I just got my Samsung EVO 64GB card today. A1 bench shows read speed as 304MB/s and a write speed of 26MB/s. Can't be right.
Edit: After doing the accurate test with reboot it's 40/20. Sounds about right.
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What about the Pro version, anyone?
does anyone own this 64gb pro microsd?
http://www.amazon.com/Samsung-Class...d=1429808635&sr=8-3&keywords=samsung+micro+sd
does it work fine with note 4 (n910c)?

Microsd card compatibility

Will a 200gb card work with this phone?
Yup
http://bfy.tw/8S2H
Using Samsung 256gb micro sd right now with it.
me too
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Sent from my ZTE A2017U using Tapatalk
If it hasn't been discussed in another thread (none as far as I know) it doesn't support UHS-I class 3 cards according to ZTE Germany Facebook support
I find it generally hard to find this particular information for most phones. Most if not all flagship smartphones brag with UHS-I compatibility but most of them are only compatible with class 1 which doesn't bring any benefits over standard class 10 cards according to my knowledge
I tried both 200 gb and 128 gb sandisk on my axon 7 global version and both make my phone too warm and of course quick battery drain . I read somewhere that actually supports only sdhc which means not more than 32 gb . Is that really true ? I have a huge music collection with lot high res files and need lot of space . Help please !
I have seen that San Disk cards have been giving people problems and that ZTE recomends the Samsung Evo Plus line.
regenwurm16 said:
If it hasn't been discussed in another thread (none as far as I know) it doesn't support UHS-I class 3 cards according to ZTE Germany Facebook support
I find it generally hard to find this particular information for most phones. Most if not all flagship smartphones brag with UHS-I compatibility but most of them are only compatible with class 1 which doesn't bring any benefits over standard class 10 cards according to my knowledge
Click to expand...
Click to collapse
If that's true that is kinda lame, do you still have source to that claim I couldn't find it easily on Google. And to back up what you're saying yes UHS-1 class 1 and standard class 10 are basically the same thing, in fact my SD card has both labels on it.
dragolds2012 said:
I tried both 200 gb and 128 gb sandisk on my axon 7 global version and both make my phone too warm and of course quick battery drain . I read somewhere that actually supports only sdhc which means not more than 32 gb . Is that really true ? I have a huge music collection with lot high res files and need lot of space . Help please !
Click to expand...
Click to collapse
I'm using a Samsung UHS-1 class 1/ standard class 10 of 64GB and it works perfectly fine.
Confirm 256 Gb MicroSD Card
I called ZTE and they insisted that my Axon 7 would only support 128 Gb, class 10. (They only read their internal specifications, which are out of date.)
Here is an article about the increased storage support:
ZTE Axon 7 update B25 bumps SD card storage limit to 256GB
So, I purchased a "Samsung (MB-ME256GA/AM) 256GB 100MB/s (U3) MicroSDXC EVO Select Memory Card with Full-Size Adapter" from Amazon for $43. This supports Class 10, U3, and 4K HD, hopefully to be faster in my next phone.
I plugged it in and is registers the full 256 Gb of storage.
I am running ViperOS 6.7, Android V9 and very happy with this ROM, although it hasn't been updated since 09/2019.

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