I'm thinking of buying bootmanager and wanted to know if my current SD card would be enough. My current no name card came with an old device, it's 16GB class 4 and writes at 7 mbps and reads at 21 mbps. Do you think this would be fast enough to switch roms with bootmanager. I was thinking of getting a 32 pny class 10 but not if what I have is good enough.
I think that is fine. The phone can only read and write so fast. You would not utilize class 10 to it's full potential. You could try a class 6 but that is about as high as I would say would be practical for this phone.
Related
I originally had an 8gb class 4 card and when transferring files between my Nexus and PC I noted speeds of up to around 3mb per second.
I recently invested in a 16gb class 6, but now when I transfer files I am very lucky to even reach 1mb per second. This card is incredibly slow, is this right? I thought class 6 were supposed to be at around 6mb's per second?
strange that the speed is less that the class 4 sd, but u cud confirm the card transfer speed using a card reader
but in any case, you shud note that the phone limits the transfer speeds so u mite never get the full transfer speed of a class 6 card...
Oh, I did not know that the phone would limit the speeds, still, it does seem strange that the speed is less than my class 4.
I shall do what you suggested and try and get hold of an adapter to use my card reader
dannstarr said:
I originally had an 8gb class 4 card and when transferring files between my Nexus and PC I noted speeds of up to around 3mb per second.
I recently invested in a 16gb class 6, but now when I transfer files I am very lucky to even reach 1mb per second. This card is incredibly slow, is this right? I thought class 6 were supposed to be at around 6mb's per second?
Click to expand...
Click to collapse
Where did you buy this card from. If it was off ebay, then it could be a fake & that would explain the 1mb transfer speed.
I recently bought a Kingmax 16GB Class6 microSD card. While I was initially transferring my files from my Sandisk 8GB Class2 microSD card, I noticed that the transfer rate was kind of slow, so I decided to do some benchmarking.
Software: CrystalDiskMark 3.0
3 different microSD cards using same USB card reader
Card #1 - Sandisk 8GB C2
Card #2 - Kingston 8GB C4
Card #3 - Kingmax 16GB C6 (new one that I just bought)
Here are the results (Seq Read; Seq Write; Random Read; Random Write):
Card #1: 17.08MB/s; 5.13MB/s; 17.09MB/s; 1.05MB/s
Card #2: 17.23MB/s; 9.53MB/s; 17.23MB/s; 1.92MB/s
Card #3: 16.05MB/s; 5.22MB/s; 16.73MB/s; 1.02MB/s
Summary: My new Class6 card was about the same speed as my Class2 card.
I approached the vendor and they tested a few other Kingmax card that they had in stock... all cards were reportedly about the same speed as the one they sent me. They swear that it's not fake. Maybe its a bad batch of cards but somthing is weird/wrong. Anyways... I'm sending my card back for a refund. I am going to stick to my Kingston Class4 card now.
1MB/sec can be indicative of USB 1 speeds, is OP sure that its connecting @ USB 2?
The class is supposed to be the minimum write speed, and I assume that to be sequential.
>Kingston
isn't that ring the bell? I mean they are pretty expensive....
I think if you go beyond certain level of quility, the pay off of such c/p ratio will get narrowed and you can't tell difference......
either go dirt cheap or go super HD expensive, middle is kind of "uh they are more expensive than dirt cheap but not even close to those expensive things....."
like my AMD vs INTEL war, cheapest AMD almost always beat middle/low Intel by cost + performance, or just go get best INTEL and enjoy the hell out of it.
happy new year
Hello!
I bought Kingston 16gb class 10 micro sdhc card and I tested it on my nexus one getting result 6mb/s and in unbutu getting same results. Both was directly pluged (Not Usb). I closed every running application in nexus one and I got same result. I also tested in different partitions and in ext2 I was getting little slower result than in fat32. But both were same or under 6mb.
Is there something wrong with the card or is it issue with nexus one that android 2.2 doesnt support class 10?
elkyur said:
Hello!
I bought Kingston 16gb class 10 micro sdhc card and I tested it on my nexus one getting result 6mb/s and in unbutu getting same results. Both was directly pluged (Not Usb). I closed every running application in nexus one and I got same result. I also tested in different partitions and in ext2 I was getting little slower result than in fat32. But both were same or under 6mb.
Is there something wrong with the card or is it issue with nexus one that android 2.2 doesnt support class 10?
Click to expand...
Click to collapse
please include where it was purchased, how much, and if there are any serial numbers/stamps on the card. there are known fakes in circulation (even brick and mortor retailers) fyi.
http://www.verkkokauppa.com/popups/prodinfo.php?id=1244 , bought for 101 euros. Serial in the card: SDC10/16GB N0206-001.AD00lF Taiwan.
ANd on adapter reads CHINA
wow thats really slow i have a 16Gb class 4 and i get 7 ~ 8 mb write speeds when the card is in N1 and connected with usb.
I would assume it's the card because as I and someone else stated above, get higher speeds with a lower class card.
As stated here:
It's my understanding that the "Class" simply refers to speed rating and thus should not effect compatibility. As long as the card supports the microSDHC standard and isn't any larger than 32gb it should work. You should also note however that in the past, vendors have claimed a higher class rating when the card did not actual perform that fast. I suggest buying from a trusted vendor with a good name.
32GB SD Card
Anyone tested the 32GB card, I know it's only class 2....
Android Class 10, SDHC3.0 compliant ?
elkyur said:
Hello!
I bought Kingston 16gb class 10 micro sdhc card and I tested it on my nexus one getting result 6mb/s and in unbutu getting same results. Both was directly pluged (Not Usb). I closed every running application in nexus one and I got same result. I also tested in different partitions and in ext2 I was getting little slower result than in fat32. But both were same or under 6mb.
Is there something wrong with the card or is it issue with nexus one that android 2.2 doesnt support class 10?
Click to expand...
Click to collapse
Class 10 should be supported, but they are usually SDHC3.0 card which is new I think...
I have a kingston class 10 as well, same issue, read speed is good but write speed is rated as 2gb, I tried to change the sector size to 4k and still the same.
For those thinking it's a fake card it is not! when I place the card in an adaptor I do 10MB write and close to 16MB read so this is a class 10.
I am not sure if it's the SDC tester app that is wrong or the phone
but since the phone behave fairly well compared to my class 4 card it could be the application. I will do some internal transfer tomorrow to see how fast they go
me too
P00r said:
Class 10 should be supported, but they are usually SDHC3.0 card which is new I think...
I have a kingston class 10 as well, same issue, read speed is good but write speed is rated as 2gb
Click to expand...
Click to collapse
Same card on my HTC Desire... same results... only 2mb/s write beside 15Mb/s read
gary.lavin said:
Anyone tested the 32GB card, I know it's only class 2....
Click to expand...
Click to collapse
See my comparison of Sandisk 16Gb vs Kingstonm 32Gb Class 4 card :-(
http://forum.xda-developers.com/showthread.php?t=830087
I just saw your thread in this forum after I posted mine in the other
Sorry
G.
Hi guys
i recently received my Sandisk Class 4 16gb micro sd card, but im getting pretty slow speeds with it.
Its currently in FAT32 format.
When transferring files from my computer to the card via the usb cable, im getting 3mbps, which is much slower than what ive seen others get with a class 2 sandisk microsd card.
Also when i test the card using 'SD tools' in the app market it says it should have write 5.7, read 10.4, which is not what im getting and still slower than results ive seen others get with class 2 sandisk microsd cards.
I also have an old 2gb Verbatim card (with no class markings), which is currently in FAT format (not FAT32), that came free with an old phone, that seems very quick when transferring files, much quicker, and in SD Tools it gets - write speed 2mbs, read speed 17 mbps.
Questions -
What format should i set the card to maximize performance (not using app2sd)?
Is a smaller capacity card of the same class faster?
(is a class 4 8gb faster than class 4 16 gb?)
Is FAT faster than FAT32?
Is my card defective?
Should i return it for a class 2 as they seem to be faster?
Hope you can help
For starters, which of those 2 file system is really faster don't matter because you cannot use FAT16 on your 16GB card. FAT16 only supports up to 2GB.
Also, class 4 is suppose to be faster than class 2.
sounds like you got a fake Sandisk Class 4 16gb, a knockoff market imitation with low quality component
what is the actual speed test result of the write?
AllGamer said:
sounds like you got a fake Sandisk Class 4 16gb, a knockoff market imitation with low quality component
what is the actual speed test result of the write?
Click to expand...
Click to collapse
Thanks for the reply allgamer, I've seen many of your posts on these boards and your very helpful
My actual write speeds are 3mbps, when transferring from my pc to the phone via usb cable.
I got the card from play.com so I didn't expect it to be fake. Are there any other tests I could do to confirm its authenticity?
Should I try different file systems like ext2 or fat etc?
3MB/s for a class 2 card is pretty good. I don't what you can expect more from that.
I have an Kingston 16Gb Class 4 and the writing speed from pc -> phone is like 2MB/s, much slower then it should. But in SD Tools its shows 4 or 4.8 MB/s writing speed.
dukuletz said:
3MB/s for a class 2 card is pretty good. I don't what you can expect more from that.
I have an Kingston 16Gb Class 4 and the writing speed from pc -> phone is like 2MB/s, much slower then it should. But in SD Tools its shows 4 or 4.8 MB/s writing speed.
Click to expand...
Click to collapse
The card I got is a class 4, and being a san disk I expected better write speeds.
What is really confusing is why the 2gb card (with no class markings) I got free with an old phone is much faster at transferring files via usb despite it getting a much lower score in SD tools.
Can anyone explain that?
Does class 10 really matter? I know according to sandisk its 32gb http://www.amazon.com/gp/product/B007XZM6VG/ref=ox_sc_act_title_2?ie=UTF8&smid=ATVPDKIKX0DER has a speed of 30MB/S. Reading into it on sdcard.org https://www.sdcard.org/consumers/cards/ on the bottom they say you should only get cards that the device will support the speed of. Example if you have a system that only supports SD-RAM PC100 you can put PC133 in it but it will down clock to PC100. My question is does the skyrocket support writing at class 10 UHS-1 speed?
tjsooley said:
Does class 10 really matter? I know according to sandisk its 32gb http://www.amazon.com/gp/product/B007XZM6VG/ref=ox_sc_act_title_2?ie=UTF8&smid=ATVPDKIKX0DER has a speed of 30MB/S. Reading into it on sdcard.org https://www.sdcard.org/consumers/cards/ on the bottom they say you should only get cards that the device will support the speed of. Example if you have a system that only supports SD-RAM PC100 you can put PC133 in it but it will down clock to PC100. My question is does the skyrocket support writing at class 10 UHS-1 speed?
Click to expand...
Click to collapse
For reference I have a 16GB Class 6 Transcend mSD and get Write 12.5MB, Read 9.5MB (weird) with SDTools (Google Play). But not all class X cards are made alike. Depending on what you do with the card, random access and random write might be much more important bench-marking indicators (using things like APP2SD where the card is frequently accessed).
There has been discussions on people noticing true class 10 speeds on their Skyrocket regarding PC to SGS2 transfer but for internal use, 6 should suffice (a true class 6, there are a lot of knock offs). I always used the rule of thumb that class = the MB/s and anything better, well don't brag about it because the class rating by the SD association only deals with the min speed and not the max.
Will my Sensation XE support this micro SD card?
I am looking at a 64GB card with "UHS Speed Class 1" but I am not sure if my phone can handle speeds of 40mb/s and therefore if it would be worth the extra cost?
Should I just go for a Class 10?
deadfire19 said:
Will my Sensation XE support this micro SD card?
I am looking at a 64GB card with "UHS Speed Class 1" but I am not sure if my phone can handle speeds of 40mb/s and therefore if it would be worth the extra cost?
Should I just go for a Class 10?
Click to expand...
Click to collapse
according to sensation's specs we can use up to 32mb sdcards
but if i remember well some users have 64mb capacity of sdcard but i can't remember which class
edit:i think 64mb sdcard class 1 will be very slow
I'm using a 64 class 10 and I'm very happy with it. It depends on what you want but I as I understand it, class 10 will give you faster speeds. You can test your card once it arrives with a SD card tester app from market to insure it's running at the speeds it should be. I checked mine and was very pleased. I would try the class 10 if I we're you. Don't get a generic brand do get a reputable brand you can trust. Hope this helps.
rzr86 said:
according to sensation's specs we can use up to 32mb sdcards
but if i remember well some users have 64mb capacity of sdcard but i can't remember which class
edit:i think 64mb sdcard class 1 will be very slow
Click to expand...
Click to collapse
I think your getting MB and GB mixed up.
I also think your getting Class # and UHS - 1 (Ultra High Speed Class 1) mixed up
realsis said:
I'm using a 64 class 10 and I'm very happy with it. It depends on what you want but I as I understand it, class 10 will give you faster speeds. You can test your card once it arrives with a SD card tester app from market to insure it's running at the speeds it should be. I checked mine and was very pleased. I would try the class 10 if I we're you. Don't get a generic brand do get a reputable brand you can trust. Hope this helps.
Click to expand...
Click to collapse
I'm asking if it will work in the phone. I am sure it will achieve speeds on a PC because that has processing power and USB controllers for it. I dont know if any phone is fast enough to handle it though...
deadfire19 said:
I think your getting MB and GB mixed up.
I also think your getting Class # and UHS - 1 (Ultra High Speed Class 1) mixed up
I'm asking if it will work in the phone. I am sure it will achieve speeds on a PC because that has processing power and USB controllers for it. I dont know if any phone is fast enough to handle it though...
Click to expand...
Click to collapse
I have a Sandisk UHS 32GB and works just fine in my Sensation, and there have been reports of the 64GB working as well. though its not really worth it for a phone because they can only handle around a class 6. cameras on the other hand...
deadfire19 said:
I think your getting MB and GB mixed up.
I also think your getting Class # and UHS - 1 (Ultra High Speed Class 1) mixed up
Click to expand...
Click to collapse
yeah you have right about the capacity.i was meaning gb
also you have right about UHS:good: