Hello,
When I first got the device, I could copy an episode of smallville in minutes, now it takes 10. My write speeds have gone from 7.5 MB/Sec down to 2 MB/Sec.
I've tried to format it, repair it (windows), and played w/ the allocation size, but nothing seems to help.
It started happening about 2 weeks ago after receiving an error message about SD card failure or something like that. It was a message in the notification bar on the phone.
So what do you all think? Is there something else I can try or is the card toast? If it's toast, what's the quickest 16 GB card you guys have used/heard of?
The card that comes with the phone is only a Class 2 card, so not exactly the fastest thing around. There are Class 6 microsdhc cards available for ~$50+ if you wanted a faster write speed.
Right, but the class 2 card was writing at over 7 megs. I'm fine with that. 2 is a little rough. :/
Jodiuh said:
Right, but the class 2 card was writing at over 7 megs. I'm fine with that. 2 is a little rough. :/
Click to expand...
Click to collapse
Class 2 is only rated for 2/s.
Sent from my ADR6300 using XDA App
I've seen lower class cards perform well above their specs though. It's always been luck of the draw for me. Guess ill start looking up some info on which to get.
Related
Found some Transcend and A-Data class 6 MicroSDHC cards that are sold cheaply on Amazon, but I'm not sure I want to spend the extra cash if the Evo has bottlenecked write/read speeds. So I was wandering if any of you have tested out a class 6 or 10 MicroSDHC card on the Evo.
The Evo comes with a Class 2 card.
Download "SD Card Speed Tester" from android market to base our results. Will be posting mine in a bit.
First test results for 8GB Class 2 MicroSDHC Card(Comes with Evo):
Write speed is 2.0MB/s
Read speed is 9.0MB/s
Second test same card:
Write 4MB/s
Read 9MB/s
Well I read that this test is inaccurate. I will try to find better, external methods.
Does the Geebees matter when it comes write/read speeds on SDHC cards?
I bought a 32GB class 6 from ebay. took a few weeks to get since it came from hong kong and i paid 40 bucks :] anyways, writing to the sd seems smoother to me. i havent "truly" tested since im a complete n00b
ripalsanghani said:
I bought a 32GB class 6 from ebay. took a few weeks to get since it came from hong kong and i paid 40 bucks
Click to expand...
Click to collapse
Since there are no 32 gb class 6 cards... you got taken.
I bought a 16 g class 6 in amazon. How do i test it? I mean to me writes and reads fast but is there a appl for that?
mikevillarroel said:
I bought a 16 g class 6 in amazon. How do i test it? I mean to me writes and reads fast but is there a appl for that?
Click to expand...
Click to collapse
Download "SD card speed tester" from android market.
without any "real" tests in android there really doesn't seem much of an improvement. mainly b/c the small amount of data that apps use.
nandroid back ups are faster though and prepping sd card at boot up is faster.
no numbers though.
madsquabbles said:
without any "real" tests in android there really doesn't seem much of an improvement. mainly b/c the small amount of data that apps use.
nandroid back ups are faster though and prepping sd card at boot up is faster.
no numbers though.
Click to expand...
Click to collapse
What about 720p recording.
Plancy said:
What about 720p recording.
Click to expand...
Click to collapse
shoot, didn't think of testing that.
if no one else does it i'll do it later today if i can.
i went to a 16 gig class 2 card since space was more important than speed for me.
madsquabbles said:
shoot, didn't think of testing that.
if no one else does it i'll do it later today if i can.
i went to a 16 gig class 2 card since space was more important than speed for me.
Click to expand...
Click to collapse
Oh please do, can't test it, don't have a class 6 card. Hope some people who do stumble onto this thread.
I bought a 16GB Class 6 mSDHC card and I can tell you that it is noticeably better than the shipped 8GB Class2 card. I notice it most when playing back high bitrate vid, I ripped some stuff from blu-ray to 800x480 mpeg4 and it loads the video faster now and plays without a single hiccup. Also from time to time I would get hiccups in the 720p videos recording with the class2 and I have not had a single hiccup with my class 6 card.
These are just my observations I have no actual measurements to compare so take this with a grain of salt.
djmend said:
I bought a 16GB Class 6 mSDHC card and I can tell you that it is noticeably better than the shipped 8GB Class2 card. I notice it most when playing back high bitrate vid, I ripped some stuff from blu-ray to 800x480 mpeg4 and it loads the video faster now and plays without a single hiccup. Also from time to time I would get hiccups in the 720p videos recording with the class2 and I have not had a single hiccup with my class 6 card.
These are just my observations I have no actual measurements to compare so take this with a grain of salt.
Click to expand...
Click to collapse
, what brand/where did you get your Card?
posguy99 said:
Since there are no 32 gb class 6 cards... you got taken.
Click to expand...
Click to collapse
Sorry, confused myself with the standard SD.
I just ran that SD speed card test, transcend c6 card. Not using a2sd or anything else. It reports write speed at 5MB/s, read at 10MB/s. Says its a c4 card. Dont know how accurate the test is but thought itd be useful posting...
*edit* ran it a second time and got write at 5, read at 11. Seems pretty consistant
TrevE said:
I just ran that SD speed card test, transcend c6 card. Not using a2sd or anything else. It reports write speed at 5MB/s, read at 10MB/s. Says its a c4 card. Dont know how accurate the test is but thought itd be useful posting...
*edit* ran it a second time and got write at 5, read at 11. Seems pretty consistant
Click to expand...
Click to collapse
Test multiple times, for some reason I got 4MB/s write the second time.
ran test a 3rd/4th time.
Write 6MB/s
Read 10MB/s
Write 5MB/s
Read 11MB/s
A fluctuation of a meg up or down i think is normal. The program might also round seeing i saw no partial numbers. Now as far as if its worth it to get a c6 id say yes regardless just for the wearleveling features.
from cyaogen wiki: http://wiki.cyanogenmod.com/index.php/Swap_and_Compcache
However, newer, high-end SD cards feature wear leveling, a mechanism that distributes write wear uniformly over the entire memory card by dynamically remapping logical memory blocks to different physical memory blocks over time. This largely alleviates the issue of card wear when using applications that tend to write to the same memory blocks over and over (i.e. swap). Most Class 6 microSDHC cards include hardware wear leveling, while Class 4 and lower cards typically do not. This feature depends on the decision of your card's manufacturer. A-Data and Transcend Class 6 cards were specifically cited as having hardware wear leveling.
Click to expand...
Click to collapse
I have a 16GBA a-data class 6 in mine and the speed test is showing 8mb write and 12mb read. Not sure how accurate that is though, the read speed is about 4mb faster than what my computer told me it was.
A-data cards are fast but if you get another brand make sure other people are saying they can do what they say they can. There are a lot of companies who flat out lie.
Plancy said:
Download "SD card speed tester" from android market.
Click to expand...
Click to collapse
Don't know if it's good or not but at least says is a class6
I seem to have gotten lucky with my Class 2 16GB.
Ran SD Card Speed Test from the market 3 times, and all 3 tests came back with at least 6MB/s write speed. Got it for $25 shipped off of Ebay. PM me if you want the seller, maybe someone else can get lucky too...
ripalsanghani said:
I bought a 32GB class 6 from ebay. took a few weeks to get since it came from hong kong and i paid 40 bucks :] anyways, writing to the sd seems smoother to me. i havent "truly" tested since im a complete n00b
Click to expand...
Click to collapse
Make sure you test it thoroughly before you run out of time to file a claim. There have been a lot of 16gb cards with the 32gb markings coming from china. It's formatted so it looks like the space is there but they wont let you use more than 16gig
Actually alot of the cards on ebay at 2gb cards. Not even a full 8 or 16. Also if you want to do a better test for your sd card speads use ATTO. its free and gives alot better breakdown. It runs on your PC.
This is an observation across several different builds with Hastrain 8.5.x and MDJ 7-8 kernels:
ScanDisk Class 2 MicroSD -- runs smooth without any problems
Any Class 10 MicroSD that i have tried -- frequent wake from sleep screen delays and occaionals BSoD
I have tried MDG Revolution 1.7, CoreDroid, Topia Series with Hastrain 8.5.x and MDJ 7-8 kernels.
The problem with Class 10 microSD cards is consistent and dissapears instantly after switching back to a Class 2 microSD.
I am not sure why, perhapps it has something to do with power consumption.
It would be great is Hastrain or MDJ could look into this problem.
Any feedback would be appreciated!
Thanks
That's not your card. That happens to all class cards on all builds. Some people say its fixed but that is straight BS. Like you, I wish it was fixed once and for all.
Maybe your class 10 card is error. Use flash card software to test it (in reading/writing testing).
I think i have found the problem. When i come back
From standby the wlan stopped and then comes back.
I tested it i deactivated wlan and test it no freezes when
Wlan is activated it freezes.
Is the class 10 also a sandisk card?
Sent from my HD2 using XDA App
I have one Kingmax class 10 16G and one Toshiba class 2 16G. I got the same problem only when using the class 10 ,especially on the phone call page.
mkutsen said:
This is an observation across several different builds with Hastrain 8.5.x and MDJ 7-8 kernels:
ScanDisk Class 2 MicroSD -- runs smooth without any problems
Any Class 10 MicroSD that i have tried -- frequent wake from sleep screen delays and occaionals BSoD
I have tried MDG Revolution 1.7, CoreDroid, Topia Series with Hastrain 8.5.x and MDJ 7-8 kernels.
The problem with Class 10 microSD cards is consistent and dissapears instantly after switching back to a Class 2 microSD.
I am not sure why, perhapps it has something to do with power consumption.
It would be great is Hastrain or MDJ could look into this problem.
Any feedback would be appreciated!
Thanks
Click to expand...
Click to collapse
I have the same problem like you. Everytime I tried to use my wintec calss 10 sd card for the android, the system will lag and have BSoD. When it wake up from sleep mode, it is very laggy. So I think the HD2 Android does not support using the Calss 10 Card.
PS. I tried the class 10 in window Vista but it doesn't have any problem. Therefore, I am sure it's not the card problem.
Perform a full disk check and also a benchmark.
Compare it to your Class 2 card.
Then proceed to copy 2 gig of data to it. If it is class 10 it should sustain 10MB/sec for the entire copy. If not you may see 10 at the start but then it slowly gets slower. Also the card will get very hot.
Its starting to get very difficult to get genuine cards. I have a number of Class 10's. One from ebay and another 2 from local stores. All are fakes.
I have a class 4 which is the best I have got so far. Can copy GB's to it and it stays constant for the whole copy. Others start of good but 1/2 way the card is really hot and only getting 50kb/sec
In my experience, only 3 card brands work, sandisk, samsung and toshiba. Kingmax, wintec and patriot didn't. I guess the class didn't matter.
Sent from my HD2 using XDA App
mattfmartin said:
That's not your card. That happens to all class cards on all builds. Some people say its fixed but that is straight BS. Like you, I wish it was fixed once and for all.
Click to expand...
Click to collapse
Its device-dependent.
My old HD2 had loads of lag when "waking up" but since I broke it and got a new one, I have had almost no wake-up lag. The longest I ever have to wait for the screen to come on is 2-3 seconds, and usually its less.
Perhaps different microSD cards exacerbate the problem, but the underlying problem is in your HD2 itself. I use a Class 6 card myself.
Been using a class 10 card ever since I got my HD2 in the summer. Works fine here..
It's a Kingston class 10 SD, dunno if that helps
jose makalolot said:
Is the class 10 also a sandisk card?
Sent from my HD2 using XDA App
Click to expand...
Click to collapse
I have 3 sdcards
Sandisk 8GB Class 6 (write ca. 7mb/s) freezing
Sandisk 8GB Class 4 (write ca. 5mb/s) freezing
Sandisk 8GB Class 2 (write ca. 2.5mb/s) testing know !!! I give in few hours feedback.
I also experience slow wake ups with both of my class 6 cards as compared to my class 2 16 gig. On my class 2, wake up is instant. On my class 6 cards (4gig and 8gig), wake time is approximately 3 to 5 seconds. I really wish someone could figure this out because of the difference in file transfer speeds; my class 2 is almost unbearable.
It would be interesting if you could all try using this build over here:
http://forum.xda-developers.com/showthread.php?t=870518
Darkstone's build puts everything into RAM so that your SD card shouldn't matter. Why don't you report back and tell us if that fixes your crashing/sleep problems?
nimsim said:
Been using a class 10 card ever since I got my HD2 in the summer. Works fine here..
It's a Kingston class 10 SD, dunno if that helps
Click to expand...
Click to collapse
I think the key factor is to stay with quality name brand cards. My class 2 is Sandisk and my class 6 4/8gig are off brand. I'm going to try different format settings and see what I can come up with. I post back if I find anything significant.
pkchips said:
Its device-dependent.
My old HD2 had loads of lag when "waking up" but since I broke it and got a new one, I have had almost no wake-up lag. The longest I ever have to wait for the screen to come on is 2-3 seconds, and usually its less.
Perhaps different microSD cards exacerbate the problem, but the underlying problem is in your HD2 itself. I use a Class 6 card myself.
Click to expand...
Click to collapse
I think you are all forgetting my post.
The SAME sd card can be fast in one HD2 and crap in another HD2.
hi
probably your sd card is abnormal cause some of the kingston and other cards are made with errors,i had a similar sd card from kingston i dont know whatever i did with it formatted it multiple times it never booted an
android build,i booted in ubuntu and used disk utility it had a lot of errors then googled and came to find out that there were batches of kingston cards with similar errors coz 1 tech support guy in an fabrication organisation found it it and they sent all the batch of their cards to kingston for replacement which kingston did,i am using the card in garmin gps as storage i think these error cards see the batch number and see other original cards they are slightly different with their numbers as well as letters you can google it and find it out.thats why be careful from where you buy it.
try using disk utility in ubuntu you may find out what is wrong with it call the company and try to replace it
Fake cards
What I was alluding to in my previous post was all the name brand cards are suffering have fakes. Right down to holograms etc on the boxes.
Even retailers are getting caught out as the shipments are getting hijacked on the way and good cards are being swapped for fakes.
Very simply you can take a class 2 card and change the clock to run at high speed. Runs great for the few first seconds however quickly overheats and starts to fail with write errors etc.
I have "Genuine" Sandisk and Kingston cards here. Both bench great but when copying a large amount of data to it it gets hotter and hotter. Eventually crawling at ridiculous speeds. Keep pushing it and I start getting write errors.
Finally picked up a genuine Kingston. Only a class 4 but after 4GB sustained writes it is still only warm and pushing 4.1mb/sec.
Compared to my Sandisk (With hologram) Class 8 which can only do 200kb/sec after 1GB of data. Eventually will fail before 2gb ram.
Yanardag said:
I have 3 sdcards
Sandisk 8GB Class 6 (write ca. 7mb/s) freezing
Sandisk 8GB Class 4 (write ca. 5mb/s) freezing
Sandisk 8GB Class 2 (write ca. 2.5mb/s) testing know !!! I give in few hours feedback.
Click to expand...
Click to collapse
Ok i have tested the Class 2 card. It freezes too.
I find the freezing comes after ~10min. Before 10min.
Is nothing from this cards freez the lockscreen.
I think wlan is major problem. With wlan off is nothing freezing,
Mobile data i have not tested.
wlan = wifi ?
I recently picked up a 32gig MSD for my Evo as I kept running out of room on the 16gig card. I went from a 16GB Class 6 to the latest Class1 or 2 that SanDisk has. My phone takes around 3 minutes to boot now at best. Looking at gallery or anything like that is SLOwwwwwwwwwwwwwwwwwwwwww. If you are thinking about and have lots of pics/videos and use App2SD like I do, you will only be disappointed in the end results with the Sandisk card. Just sharing so others can save and wait for a real card.
Lisnup
Interesting...I have a 32gb sandisk class 2 card that is 3/4 full and I have very little if any delay...I only have 8.19gb space left.
MsRandall said:
Interesting...I have a 32gb sandisk class 2 card that is 3/4 full and I have very little if any delay...I only have 8.19gb space left.
Click to expand...
Click to collapse
I have 11 gigs left at current and the only change I did was this card and I can say that performance of the gallery and boot time has severly suffered from what my old card gave me.
the lower the class number on the card, the slower the transfer rate. So your 16gb class 6 may have less room, but its way faster than a 32gb class 2. Dont know if this helps or not.
gsx62391 said:
the lower the class number on the card, the slower the transfer rate. So your 16gb class 6 may have less room, but its way faster than a 32gb class 2. Dont know if this helps or not.
Click to expand...
Click to collapse
+1. I switched from the Class 2 8GB card that came with it to a Class 10 16GB card and the differences are staggering. I never benchmarked my class 2, but I get around 17.8 Mbps read/write on this one. On my 8GB card it would take about nine minutes to transfer a movie from my phone, now it takes under a minute.
that isnt always true that cards are just slower. The class system is a min spec system meaning they have to atleast hit this to make it they can be well over it depending on the chip used
Most people benchmarking the San disk 32gb cards are finding them to perform closer to class 4 then the indicated class 2. Check out the thread in the accessory section. Perhapse your card is defective.
Sandisk. The Yugo/Walmart of the mem card world. None of the pro photographers that shoot digital that I've met will even touch them.
lisnup65 said:
I recently picked up a 32gig MSD for my Evo as I kept running out of room on the 16gig card. I went from a 16GB Class 6 to the latest Class1 or 2 that SanDisk has. My phone takes around 3 minutes to boot now at best. Looking at gallery or anything like that is SLOwwwwwwwwwwwwwwwwwwwwww. If you are thinking about and have lots of pics/videos and use App2SD like I do, you will only be disappointed in the end results with the Sandisk card. Just sharing so others can save and wait for a real card.
Lisnup
Click to expand...
Click to collapse
I've had a similar experience with my 32GB class 2 sandisk MSD.
Sent from my PC36100 using XDA App
My 16gb class"6" sandisk POS clocks at class 4, barely. Got what I paid for at $30 I guess. (last time I buy that crap)
Borrowed from another post! View attachment 474476
My 32gb clocks right at class 4 just as its labeled, I like it seems to work just fine
Sent from my PC36100 using XDA App
My 32gb. Class 2 SanDisk clocks in at Class 6... lol, I guess I got what I paid for. It suck BC I just paid for a 32gb Class 4 Kingston BC I thought it would be faster.
Sent from my PC36100 using Tapatalk
So Ive been using the 16gb Class 2 sd card that came with my HD2 for WP7 and I havent really had any problems with it. Occasionally it reboots for no reason, but aside from that, its perfect. However, my friend just gave me his 4gb Class 4 card. Should I keep using the 16gb or reset my phone with the faster 4gb?
simple test, all sd cards work differently
my Nokia 4GB Class 6 is better than may Sandisk 16GB Class 2
Xbox Live Installation: ( only the installation without download )
Nokia 4GB Class 6: 1:23 minutes
Sandisk 16GB Class 2: 9:41 minutes
peace warhead said:
So Ive been using the 16gb Class 2 sd card that came with my HD2 for WP7 and I havent really had any problems with it. Occasionally it reboots for no reason, but aside from that, its perfect. However, my friend just gave me his 4gb Class 4 card. Should I keep using the 16gb or reset my phone with the faster 4gb?
Click to expand...
Click to collapse
Class 2 cards usually work better for wp7. Actually class means nothing when it comes to wp7... you want good random access speed for wp7 to run smooth. Many times, the tricks that manufacturers do to their cards to get higher sequential write speeds will actually reduce the random access speed. They don't keep the random access speed consistent on any of their cards as that speed isn't rated, so even cards of the same brand and class can differ greatly from batch to batch. A card made one day may run wp7 well while the same card made a month later may not. So far it seems class 2 sandisk are the most consistent in keeping good random access speed, so if you are going for a card for wp7, go for class 2 sandisk with model numbers ending in A11M. If you already have a card that works well, no reason to switch unless you want to change the size, because there's no way to guarantee a card will work well until it's tested.
When i try to UL large files to my desire HD I get very slow UL speeds around 2 MB sec max, sometimes it even gets stuck for a minute or so. I tried different USB ports etc.
What are your UL speed on average for larger files? How can I speed up my UL Speed?
Open to any suggestions
Thanks
you are using the wrong cable (UBS)
depending on the SD card class you have in your phone will determine the read and write speeds. I believe you recieve a Class 2 or 4 with the phone.
It depends on your SD card. A Class 2 card will have a max write speed of around 2 MB/s.
you are using the wrong cable (UBS)
Click to expand...
Click to collapse
LOL.
What SD card are you using? I'm still using the one that the device came with and it's copying at around 6MB/s.
Also If you copying a big as amount of small files the speed will decrease
I get 14MB/sec sustained transfer rate from PC to DHD on Kingmax 8GB Class 10 card.
On the original Class 2 card I get around 4MB/sec.
I've got a 16gb class 4 Dane-elec card and the write speed sometimes goes down to 850kb/s and never goes past 2mb/s
I tried the card in a different phone and also with the adapter to make it an sd card with the same results so i assumed the card was faulty. Getting it sent back for a refund, while copying my data back on to the standard 8gb card that comes with the phone the write speed is at 576kb/s.
Not really sure what to do now, have already reformated the 16gb dane-elec and that didn't help. My next card will be a SanDisk as i've heard good things from them.
Any help would be appreciated.
arielc said:
I've got a 16gb class 4 Dane-elec card and the write speed sometimes goes down to 850kb/s and never goes past 2mb/s
I tried the card in a different phone and also with the adapter to make it an sd card with the same results so i assumed the card was faulty. Getting it sent back for a refund, while copying my data back on to the standard 8gb card that comes with the phone the write speed is at 576kb/s.
Not really sure what to do now, have already reformated the 16gb dane-elec and that didn't help. My next card will be a SanDisk as i've heard good things from them.
Any help would be appreciated.
Click to expand...
Click to collapse
Might be a fake card. Class 4 should have a minimal write speed of 4 MB/s (actualy it should be even higher). SanDisk is an excellent choice if you have the money.