Okay, so I have a major annoyance. I just bought a brand new Kingston 32 GB class 6 card for my Evo and I'm getting transfer speeds under 1 MB/sec on Win7 x64 Pro. For instance, I was transferring some video files from my 10k RPM drive via the stock cable and was getting 668 KB/sec. I had Vista and I'd get 7+ MB/sec transfers on a 4 GB class 6 card. What gives? My internet downloads much faster than that...c'mon!
Any suggestions/tips/etc are appreciated.
_newb_ said:
Okay, so I have a major annoyance. I just bought a brand new Kingston 32 GB class 6 card for my Evo and I'm getting transfer speeds under 1 MB/sec on Win7 x64 Pro. For instance, I was transferring some video files from my 10k RPM drive via the stock cable and was getting 668 KB/sec. I had Vista and I'd get 7+ MB/sec transfers on a 4 GB class 6 card. What gives? My internet downloads much faster than that...c'mon!
Any suggestions/tips/etc are appreciated.
Click to expand...
Click to collapse
Not much you can do besides changing the formats of what you are transferring
Related
It took about 20 minutes to transfer 2.99 GB from my Macbook to my EVO... I thought the class is the minimum write speed - i.e. Class 4 ~ 4 MB/s write. If I did the math right, writing about 3GB = ~3000 MB, at 4 MB/s that's ~750 seconds = ~12.5 minutes...minimum.
Is there a way I can effectively test this thing (on a Mac preferably)?
highcheef13 said:
It took about 20 minutes to transfer 2.99 GB from my Macbook to my EVO... I thought the class is the minimum write speed - i.e. Class 4 ~ 4 MB/s write. If I did the math right, writing about 3GB = ~3000 MB, at 4 MB/s that's ~750 seconds = ~12.5 minutes...minimum.
Is there a way I can effectively test this thing (on a Mac preferably)?
Click to expand...
Click to collapse
You can try either of these two programs. They are bot in the zip they will bench test your sd card, only work on windows though.You may be able to find them for a Mac. Sorry I only use windows so can't help much with the Mac side of things.
ifly4vamerica said:
You can try either of these two programs. They are bot in the zip they will bench test your sd card, only work on windows though.You may be able to find them for a Mac. Sorry I only use windows so can't help much with the Mac side of things.
Click to expand...
Click to collapse
thank you for that lil proggie gonna ck my new Lexar 32gig out 2nite when i get home...took me approx 30 mins maybe to xfer over approx 7 gigs from the old card!
Before reading:
http://forum.xda-developers.com/showthread.php?t=1150369
I used a Lexar Class 10 32GB card, pretty impressed with its sequential accessing speed but really disappointed when the card performed exactly the same in random accessing speed as shown in the thread.
I've been using it for about 4 months, over these months, it has corrupted 7 times due to rapid random access while updating apps, and the phone loses response during app update.
So few days ago I ordered Sandisk 32GB class 4, using CrystalDiskMark, I conducted a test of file allocation unit size VS performance, please refer to the attached file.
I'm currently using it with 8KB file allocation unit size.
I hope this is gonna help some people regard formatting their SD cards
My Lexar 32GB class 10 still works fine, just the random access speed is too slow, the sequential access speed is excellent, perhaps it will be more suitable for a camera or video camera, if you're interested in getting this used card, please PM me.
I am planning to buy a memory card for my Galaxy 3.
I already have a Class 2 8GB card which I will give to my father.
So I was looking for a better memory card this time.
I have following 3 options right now.
8 GB class 10 : Rs 700/-
16 GB class 6 : Rs 1100/-
32 GB class 4 : Rs 1950/- (Probably not worth it)
I was actually looking for 32 GB class 10 within 2000 but not available. or even if it is available, It wont be affordable for me.
I would like some developers like Dharam, Hillbeast, Naveen or Kyrillos to suggest me what should I go for.
I am planning to use 2GB a2sd partition & 256MB swap on it.
How about Class 6 performance? Would I miss something if I go for the 16GB card?
Meaning, do I really need a class 10 card for a2sd and swap?
If anyone from India can direct me to some better deals than above 3 then I would be thankful.
Sent from my GT-I5801 using XDA App
pednekar.mohan said:
I am planning to buy a memory card for my Galaxy 3.
I already have a Class 2 8GB card which I will give to my father.
So I was looking for a better memory card this time.
I have following 3 options right now.
8 GB class 10 : Rs 700/-
16 GB class 6 : Rs 1100/-
32 GB class 4 : Rs 1950/-
I was actually looking for 32 GB class 10 within 2000 but not available. or even if it is available, It wont be affordable for me.
I would like some developers like Dharam or Kyrillos to suggest me what should I go for.
I am planning to use 2GB a2sd partition & 256MB swap on it.
If anyone from India can direct me to some better deals than above 3 then I would be thankful.
Sent from my GT-I5801 using XDA App
Click to expand...
Click to collapse
Get the 8GB class 10 card.
32 GB class 4
anxdateamcool said:
32 GB class 4
Click to expand...
Click to collapse
Worst choice. The sd card is slow so app2sd will be slow and you won't even use 32GB of space. Class 10 is fastest so you will be fine since you want to partition 2GB
Sent from my GT-I5800 using XDA App
pednekar.mohan said:
I am planning to buy a memory card for my Galaxy 3.
I already have a Class 2 8GB card which I will give to my father.
So I was looking for a better memory card this time.
If anyone from India can direct me to some better deals than above 3 then I would be thankful.
Sent from my GT-I5801 using XDA App
Click to expand...
Click to collapse
I bought a samsung 8 GB class 6 microsd card from ebay-dot-in for around 500 Rs.It does not seem to lag, but sdtools my transfer speeds are 6 Mbps read and 4 Mbps write, which is the same as what i was getting earlier with a class 4 verbatim. These speeds were checked after setting the buffer to 2048 KB.
Bobby
bobbyprajan said:
I bought a samsung 8 GB class 6 microsd card from ebay-dot-in for around 500 Rs.It does not seem to lag, but sdtools my transfer speeds are 6 Mbps read and 4 Mbps write, which is the same as what i was getting earlier with a class 4 verbatim. These speeds were checked after setting the buffer to 2048 KB.
Bobby
Click to expand...
Click to collapse
I think our phones have a certain limit on SD card read and write speeds
bobbyprajan said:
I bought a samsung 8 GB class 6 microsd card from ebay-dot-in for around 500 Rs.It does not seem to lag, but sdtools my transfer speeds are 6 Mbps read and 4 Mbps write, which is the same as what i was getting earlier with a class 4 verbatim. These speeds were checked after setting the buffer to 2048 KB.
Bobby
Click to expand...
Click to collapse
well...hillbeast said that speed of sdcard is like that because of JIT is being enabled in custom rom's.... ...and i have 8Gb class 10 Verbatim sdcard and I'm using hybridata2sd....everything runs smoothly
Sent from Galaxy
Kyrillos' 9.3
powered by
G3mod 2.2.2 OC
Class 6... Interesting...
bobbyprajan said:
I bought a samsung 8 GB class 6 microsd card from ebay-dot-in for around 500 Rs.It does not seem to lag, but sdtools my transfer speeds are 6 Mbps read and 4 Mbps write, which is the same as what i was getting earlier with a class 4 verbatim. These speeds were checked after setting the buffer to 2048 KB.
Bobby
Click to expand...
Click to collapse
I feel like I need the 16 GB class 6.
btw I am getting 6 Mbps read 5 Mbps write (buffer = 4096 KB) on class 2 Transcend. Isn't that weird??? (I actually opened up to see. It is class 2 indeed!!)
Dont go for 32 gb - You are phone will get hang up
Use how much you required .I guess 16Gb is sufficient
So I have this SanDisk Ultra 16GB Class 10 microSDHC Card from Best Buy, which was on sale for $20 when I bought it two months ago. Formatted the card as soon as I put it inside the phone. I started to transfer some music albums from my PC and the write speeds are very slow, averaging only 1.8 MB/s. I'm not getting anywhere near Class 10 write speeds. Don't have a USB SD card reader that supports SDHC, so I don't have the option to take it out and use the SD adapter. I tried using an SD speed increase app and changed the cache to 2048 KB, but same result. Didn't want to bring up this issue until now.
Anyone have any solutions to this? If it helps, I'm running CM 10.1 (Android 4.2.1), Nitest 12-31 kernel for CM 10.1 Preview Build.
Makes a huge difference because you will need a usb 3.0 port on your computer for that to work
Sent from my SPH-D700 using Tapatalk 2
phonehunter59 said:
Makes a huge difference because you will need a usb 3.0 port on your computer for that to work
Sent from my SPH-D700 using Tapatalk 2
Click to expand...
Click to collapse
I don't think so. My Transcend 4GB C10 and Lexar 16GB C10 are writing at 10MB/s just fine on USB 2.0 reader and ports.
Sent from HTC Incredible S @ CM10
AndyYan said:
I don't think so. My Transcend 4GB C10 and Lexar 16GB C10 are writing at 10MB/s just fine on USB 2.0 reader and ports.
Sent from HTC Incredible S @ CM10
Click to expand...
Click to collapse
I get about 6-8 MB with a class 4 on usb 2.0 ports
Sent from my SPH-D700 using Tapatalk 2
InsaneHien said:
So I have this SanDisk Ultra 16GB Class 10 microSDHC Card from Best Buy, which was on sale for $20 when I bought it two months ago. Formatted the card as soon as I put it inside the phone. I started to transfer some music albums from my PC and the write speeds are very slow, averaging only 1.8 MB/s. I'm not getting anywhere near Class 10 write speeds. Don't have a USB SD card reader that supports SDHC, so I don't have the option to take it out and use the SD adapter. I tried using an SD speed increase app and changed the cache to 2048 KB, but same result. Didn't want to bring up this issue until now.
Anyone have any solutions to this? If it helps, I'm running CM 10.1 (Android 4.2.1), Nitest 12-31 kernel for CM 10.1 Preview Build.
Click to expand...
Click to collapse
My Take...
1.Transferring multiple small files will always be slower in transferring speed than a single big file.
2. Using your phone as an alternative to sd card reader will be a lot slower at transferring files to your PC. I always prefer to take out the memory card out of my phone and connect it with an sd card reader instead of attaching a direct usb cable to my phone.
3. install "SD Card Tester" from the play store, try to close all the other open apps and test your memory card with it within your phone. My results with my Micro Center branded class 10 card were ~6MB for Writing and ~7MB for reading of 348MB test file... I'm sure though if I test it again with my PC it would meet the advertised 10MB writing speed.
i have a memory can of scandisk 16gb(class don't known)before this i have 8gb,4gb...
i used this on my evo 3d..
when i try to copy any item from laptop to this 16gb memory card it give max. speed 3.0--3.14 mb per second with using datacable or adaptor but if i try 8gb card now max. speed goes to 7mb(aprox.) ..also if i try to copy any item from memory card to laptop when speed goes near about 22 mb per sec. in both memory cards..
i can try this on many computer also but samething happen...
now what can i do ????
simran420 said:
i have a memory can of scandisk 16gb(class don't known)before this i have 8gb,4gb...
i used this on my evo 3d..
when i try to copy any item from laptop to this 16gb memory card it give max. speed 3.0--3.14 mb per second with using datacable or adaptor but if i try 8gb card now max. speed goes to 7mb(aprox.) ..also if i try to copy any item from memory card to laptop when speed goes near about 22 mb per sec. in both memory cards..
i can try this on many computer also but samething happen...
now what can i do ????
Click to expand...
Click to collapse
Compare the class of both cards, the card with higher class should be faster.
Another question may be if you are using the same usb port. Maybe one port is a 1.0 and the other 2.0.
Another reason may be the adaptor you are using for reading/writing, if you are using diferent adaptors maybe one of them is a 1.0 usb.
how can i find the class of sd cards...
i try this on all usb ports but samething happen ..
i have only one adopter...
I would guess it's the card's speed - it's normal for the "read" speed to be faster than the "write" speed.
The speeds you're getting sound like the card is probably a Class 4 - whereas the other ones that write faster have a higher speed.
Just look at the card, it has either a 2 or a 4 or a 6 in a circle stamped on it. Thats the class. The class = the number of MB/S it can transfer. A class 6, for example, transfers approximately 6mb / sec.
I also on my Wave 3 I have a microSD 8 GB Class 4, and is very slow
The games installed on the extern memory are hard to play... bah
Hey guys don't go for SanDisk. Its crap.i have blown my 32gb clsss 10 card and facing really problem for replacement. The support system is very weak.better go for some others.
Sent from my MT11i
XDguru said:
Hey guys don't go for SanDisk. Its crap.i have blown my 32gb clsss 10 card and facing really problem for replacement. The support system is very weak.better go for some others.
Sent from my MT11i
Click to expand...
Click to collapse
samsung is a good option
sony though a bit costly lasts longer than any other cards.
I'll try it
---------- Post added at 09:30 AM ---------- Previous post was at 09:25 AM ----------
I'm waiting until I get a 32GB SD card I ordered in Dealxtreme. I remember it was a class 4. I'll tell you.