Hi, does anyone know what the max supported speed is? I can buy a 2 mb/s write and 3 mb/s read 1 GB SD card or a 5mb/s write and 6 mb/s read for just 10€ more.
So my question is, should I pay 10€ more?
Buy the fastest
Because ifyou by a usb card reader you will be able to copy data faster.
So it only matters if I also buy a cardreader?
Hmm i wondering about this myself even, whats the different . Can anyone answer exact how fast the qtek s100 writes and read. It must be some meaning of faster memeory card. Example Simpletech has 10/10mb fast and writing speed . And Sandisk 1.5/5mb i think. Dont the phone be faster with faster memory card???? please someone?
the card reader is really slow
i've bought a Sandisk 1GB Extreme III SD card, but in fact it is slower that a normal 512MB Kingston SD card, to bad... (both around the 1MB/s with PocketMechanic SD benchmarking).
I got a 32Gb MicroSDHC class-10 memorette card.
I verified the speed with a card reader + h2testw that write speed is : 14.7MByte/sec
read speed: 17.5MByte/sec
But when I used the class10 card in tmobile HD2, I am shocked.
When I copy a 720MB movie the write speed is about 4MByte/sec.
h2testw program when used on hd2 connected to PC, showed write speed as 4.8 MByte/sec only.
It needs to be noted the same card when tested with h2testw and a card reader gave 14MByte/sec but gives less than 4.5MB/sec on HD2.
How to fix this problem of HD2 microsd card speed!
Looks like HD2 usb controller has some problem.
the card is indeed class-10.
Please let me know a solution to this problem on HD2.
downbc1 said:
I got a 32Gb MicroSDHC class-10 memorette card.
I verified the speed with a card reader + h2testw that write speed is : 14.7MByte/sec
read speed: 17.5MByte/sec
But when I used the class10 card in tmobile HD2, I am shocked.
When I copy a 720MB movie the write speed is about 4MByte/sec.
h2testw program when used on hd2 connected to PC, showed write speed as 4.8 MByte/sec only.
It needs to be noted the same card when tested with h2testw and a card reader gave 14MByte/sec but gives less than 4.5MB/sec on HD2.
How to fix this problem of HD2 microsd card speed!
Looks like HD2 usb controller has some problem.
the card is indeed class-10.
Please let me know a solution to this problem on HD2.
Click to expand...
Click to collapse
The HD2 doesn't read or write to sd cards at that high of speed... that's why it's pointless using class 6 or 10 cards in a HD2. I think most phones are like that. Class 6 and 10 cards are mainly used for digital cameras, where having high sequential write speeds matters.
zarathustrax said:
The HD2 doesn't read or write to sd cards at that high of speed... that's why it's pointless using class 6 or 10 cards in a HD2. I think most phones are like that. Class 6 and 10 cards are mainly used for digital cameras, where having high sequential write speeds matters.
Click to expand...
Click to collapse
I have earlier used a nokia 5800 xpressmusic phone with a class 6 16GB card.
The data transfer speeds were higher than HD2.
Generalizing from a single instance (HD2 scenario) may not be correct.
I'm going to go with that the HD2 does not transfer faster than 5.3 MB/sec between the PC and the phone regardless of what the internal transfer rate between the phone and card is.
Using a class 6 card myself, i have noticed that the phone is much more responsive than it was with the class 2 card in there and movies play without stuttering from the class 6 card and applications launch quicker.
my nokia n81 8gb did 8MB/sec from internal 8GB and so did my KM900. The KM900 did 6.2MB from the same classs 6 card
I was under the impression the HD2 maxed at 16 gig. Maybe that's the problem?
Like zarathustrax said, the HD2 isn't capable of read/write any higher than a class 4 card. I think somewhere on the EVO forum there's a fix to unlock the read/write capability for a higher speed but I dunno if anyone here has tried the fix, or if it even works for the HD2 at all.
anhyeuemmaimai said:
I'm going to go with that the HD2 does not transfer faster than 5.3 MB/sec between the PC and the phone regardless of what the internal transfer rate between the phone and card is.
Click to expand...
Click to collapse
This is not true. I've copied large files at over 10MB/s directly to the phone. I can't vouch for every hd2 though as it's quite possible they have different hardware. Also the speed drops dramatically if you're copying many smaller files.
I am thinking to buy memorette 32 gb microsd class 10 for my HD2.
As far as I have understood:
1) No matther what I cannot use it fully Class 10 speed when connected to HD2
2) When I connect it to my PC with card reader I can fully use class 10 speed.
I have sandial 8 gb class 2. When I connect it to my pc with card reader and transfering large amount of data (150+ MB), it cease to operate. I have to reconnect it. Then I shuld transfer in less amount of data or reduce copy speed (such as UltraCopy) . I think that is a safety issue for preventing disk from get burned. My question is, will I possibly have some issues with memorette or some other class 10 cards?
Also would it not better using class 10 card in HD2 for using on SD installed Operating System instead of class 6 or 4?
I would appriciate if someone return about memorette. I have never heard about that trademark. I am planning to bid on ebay today.
Sent from my HTC HD2 using XDA App
lude219 said:
Like zarathustrax said, the HD2 isn't capable of read/write any higher than a class 4 card. I think somewhere on the EVO forum there's a fix to unlock the read/write capability for a higher speed but I dunno if anyone here has tried the fix, or if it even works for the HD2 at all.
Click to expand...
Click to collapse
fix to unlock the read/write capability for a higher speed ????? Really ... i have buy a micro sd 16GB class 10 ........
morfil said:
I am thinking to buy memorette 32 gb microsd class 10 for my HD2.
As far as I have understood:
1) No matther what I cannot use it fully Class 10 speed when connected to HD2
2) When I connect it to my PC with card reader I can fully use class 10 speed.
I have sandial 8 gb class 2. When I connect it to my pc with card reader and transfering large amount of data (150+ MB), it cease to operate. I have to reconnect it. Then I shuld transfer in less amount of data or reduce copy speed (such as UltraCopy) . I think that is a safety issue for preventing disk from get burned. My question is, will I possibly have some issues with memorette or some other class 10 cards?
Also would it not better using class 10 card in HD2 for using on SD installed Operating System instead of class 6 or 4?
I would appriciate if someone return about memorette. I have never heard about that trademark. I am planning to bid on ebay today.
Sent from my HTC HD2 using XDA App
Click to expand...
Click to collapse
A good quality class 2 or 4 sd card is usually better for running an operating system off of, as lower class cards tend to have faster random access speed and better random read/write speeds. Class 6 and 10 sd cards are designed to have a higher sequential write speed, but to achieve these higher speeds, the card initializes the part of the card that's about to be used. The initialization takes some extra time to get started, but boosts the sequential write/read speed so it's great for digital cameras or writing files sequentially.
But when it comes to using the card to run an OS off of, like android or wp7, or using the card to run apps off of, you are going to be reading and writing many small bits of data from different parts of the card. When it comes to this, you need a card that has a good random access speed and random read/write speeds. A high class card that is tweaked to have high sequential read/write speeds ends up being slower because it keeps initializing each part of the card before accessing it, while the lower class 2 or 4 card that doesn't do the initialization is a lot quicker accessing many small parts of the card because it doesn't have that extra step... but they don't get the speed boosts with sequential read/write.
Many people just assume that a higher class card is always going to be better, but this isn't true at all. It all depends on what you are using the card for. Higher class 6 or 10 cards are perfect for digital cameras, recording video, or transferring large files, etc... if you are going to be doing sequential reading or writing, higher class is better.
But for running apps off of, or running an OS off of, or using it as internal memory for an OS like wp7, or anything that will be accessing many parts of the card quickly or reading many small bits of data, etc., you want a card with a good random access speed and random read/write speeds, and that is something that is not rated on cards... but generally lower class cards are better than higher class cards... especially if you get a good quality brand, like sandisk. Sandisk class 2 and 4 are very good cards for random access speeds.
I hope some of you find this info useful and stop assuming a higher class card means better for all situations.
buzz killington said:
This is not true. I've copied large files at over 10MB/s directly to the phone. I can't vouch for every hd2 though as it's quite possible they have different hardware. Also the speed drops dramatically if you're copying many smaller files.
Click to expand...
Click to collapse
You must be special then. In my tests I had no difference in a class 2 and class 6.
morfil said:
I am thinking to buy memorette 32 gb microsd class 10 for my HD2.
As far as I have understood:
1) No matther what I cannot use it fully Class 10 speed when connected to HD2
2) When I connect it to my PC with card reader I can fully use class 10 speed.
I have sandial 8 gb class 2. When I connect it to my pc with card reader and transfering large amount of data (150+ MB), it cease to operate. I have to reconnect it. Then I shuld transfer in less amount of data or reduce copy speed (such as UltraCopy) . I think that is a safety issue for preventing disk from get burned. My question is, will I possibly have some issues with memorette or some other class 10 cards?
Also would it not better using class 10 card in HD2 for using on SD installed Operating System instead of class 6 or 4?
I would appriciate if someone return about memorette. I have never heard about that trademark. I am planning to bid on ebay today.
Sent from my HTC HD2 using XDA App
Click to expand...
Click to collapse
I am using memorette class 10 32GB microsd currently.
Its affordable and is fully working. I have tested to full capacity read/write using h2testw as I wrote in an earlier post.
Just check the seller's feedback and the description though.
I use TEAM micro sd class 10 on my hero,but after a month my sd card write speed is only 2MB/s.
At the first time,it reach 11MB/s when i tested it with h2testw and sd speed test on my handset.
I only use 640MB for app2sd (ext2) without swap cache.
Could someone explain to me what was happen to my sd card?
Sorry for my bad English
hello
first thx to all dev's for developping some tweaks hacks roms for this androphone for the masses
so i' m planning buying a new sdcard ( mine sdhc is ko)
is it possible to know wich are the limitations ( data transfert) of the phone ( chipset) and wich class of sd should i buy : class 6 or maybe a good class10
is there any hardware bottleneck in what concern data rate transfert
thx
have fun
greets from Belgium
I would also like to know the same.
I am thinking about buying a class 10 card, since the one I am using currently only has class 4. When I am using app2sd+ currently, apps are started much slower then from internal memory (especially big ones like google maps).
Would a class 10 card even make a difference? Especially with app2sd+? Or is the phones hardware limited somewhere?
I would also like to know, would class 6 be enough or should i aim for class 10 ? I mean class 10 is also much more expensive.
I have a class 6 SD card and its great for me but this phone wont use it like others. I speedtested it on my phone with sd speedfix applied and it was three times slower than on SE X10 without sd speedfix.
Hi,
I use the cheapest class 10 card with 16 GB I found. Unfortunately it is not very quick in my galaxy 3. With SD tools I get a read speed of 4,6 MB/s and a write speed of 5,3 MB/s. So may be I was betrayed from seller.
I tried to increase speed by setting the read_ahead_KB with SD speed increase. I noticed that increasing the buffer did not enhance speed. But when I set buffer to 0 suddenly read speed increases to about 40 MB/s.
I set SD speed increase to change the value to zero at every startup and now I do not have any more problems with lagging with videos. So it seems not just to be an effect in the app SD tools.
CU
donny
Is somebody trying MICRO SD SDHC 4GB 4 GB SAMSUNG "PLUS" CLASS 6?
Was going for a Class 6 Samsung micro SDHC, but a Microcenter store I went to was out, and they offered the "Pro" version (which is a UHS-1 for transfer speeds of up to 70mb/s for writing and 20mb/s for reading). I said right away that my phone might not be compatible, but I'd try it.
So here are my puzzling results after the installation:
AnTuTu Benchmark: Read: 12.0MB/s, Write: 3.3MB/s
SD Card Tester: Read: 11.2MB/s Write: 3.24MB/s
A1 SD Benchmark: Read: 224.04MB/s, Write: 4.31MB/s (not sure what's up with that read value...)
These are with MIUI GB ROM with Android 2.3.7
Are these low speeds the effect of the UHS-1 not being quite compatible, or is my system really just that slow that it bottlenecks the card so dramatically?
I'll be looking to get a Class 6 card, which I know is plenty sufficient.. Hopefully it will not have such low transfer speeds with my HTC HD2.
For comparison purposes, my old Kingston 4GB Class 4 card scores 3.2MB/s write and 9.1MB/s read.
P.S.: Pretty sure this is a legit Samsung card, given the vendor and the appearance of the card, including all the fine print and serial number on the back.
I've got a while ago a Samsung 32gb PLUS microsdhc class 10 UHS-1...blah blah blah
I didn't pay attention to speeds before, but i was reading something about last night, and i checked on mine.
This card is advertised to reach up to 48mbps (read)
I tested on my s4 and the results was:
SD Tools:
Writing speed: 12.2 mb/s
Read speed: 19.7 mb/s
A1 SD Bench:
Writing speed: 14.60 mb/s
Read speed: 18.60 mb/s
My question is to someone who knows a bit about those memory cards and have some experience with them..
Did i get a fake one? Or the speeds above are normally for this type of card?
Anyone?
I think our phones can't handle more than 20MB write and read speed but on the computer, it may be faster. If you want to check if your microSD card is genuine then use H2TestW on your computer to test the card
Crauze said:
I think our phones can't handle more than 20MB write and read speed but on the computer, it may be faster. If you want to check if your microSD card is genuine then use H2TestW on your computer to test the card
Click to expand...
Click to collapse
Oh yes our phones has much higher reading/writing speeds.
For an example:
Internal phone card:
read: 81.42 mbps
write: 33.33 mbps
This is a quick test on A1 SD Bench.
So i would like to know from someone who knows better those cards if is normal.
I know that fake ones will not get writing speeds over 10mbps anyway, but i want to be sure.
Thanks
Dean-xXx said:
Anyone?
Click to expand...
Click to collapse
There is at least one similar thread.
Your speeds are the same as everyone else's. Don't worry, your card is ok.
Is the phone that is not able to use the full speed that the card can achieve.