[Q] What is Defy's micro SD card slot Class / specification? - Defy Q&A, Help & Troubleshooting

Hello All,
I know there are lots of threads here about which SD cards work with the Defy, and which don't... E.g.:
[/showthread.php?t=1159877]
[/showthread.php?t=1660621]
[/showthread.php?t=1495446]
However, as an experienced computer hardware tech, it all seems very back-to-front to me. When you buy a new PC motherboard, the manual invariably tells you what memory type it requires, what speeds it can handle, and what its maximum memory data transfer rate is. Then, you can simply go out and buy the fastest memory the motherboard supports, and be fairly sure of two things: 1: it's going to work, and 2: you'll have the fastest memory speed you can get out of the motherboard, without wasting money buying faster memory than it can utilise.
For those who don't really understand these things, every motherboard, every CPU, every memory controller and every memory module has a maximum rated speed [over-clocking not included!] at which it is 'guaranteed' to work and be reliable. If your motherboard/CPU/memory controller has a maximum rated 800MHz memory transfer rate, there is no point installing 1333Mhz memory in that motherboard, because the motherboard will only run it at 800MHz. You'll pay more, for no speed or reliability advantage. In fact, as this forum shows, there is a VERY GOOD chance that you'll end up with something that is less reliable. This is because, as chip speeds increase, of necessity, certain timings and timing relationships change. For example, "Data Hold" times may [probably will] decrease, meaning that when reading data back from a faster memory chip, the data is starting to "disappear" from the output pin, before the CPU has had time to properly read it. The data transfer becomes "marginal", meaning it only just works, or doesn't quite. This will result in memory read errors (which will look like data corruption, even though the data inside the chip is perfectly correct), and will result in many of the problems described in these various threads. It will probably vary, depending on temperature, supply voltage, and type of data transfer (e.g. Photo/Video/USB, etc) and even phone - I.e. One Defy might work, the next might not - or your system (PC, phone, etc) may work for some things but not others, or work when it's cool, but bomb out as it gets hot, or vice versa. Instability and Unreliability are the keywords!
This, I submit, is why many people with Class 10 SD cards report problems. They would, I believe, be far better to buy Class 6, and are probably living under the illusion that a Class 10 card will work faster. I would say, it almost certainly won't...
Anyway, my point is, why do phone makers (or Motorola at least as I haven't really looked at other manufacturers) not publish their phone SD Card slot specifications? I just don't understand why not. It seems so fundamental to me.
If they did, you (everyone) would know what card Class to get, and be confident that it should work, and that if it doesn't, you've got a dodgy card. We wouldn't need long threads on XDA Developers discussing which cards work, and which don't.
So, my Defy came (OEM) with an unbranded 2GB micro SDHC card, with no visible Class mark. I wanted to upgrade, so I searched the Motorola Manuals for the SD Card slot spec, to find out what Class I needed. AMAZING, but No Luck! I couldn't find it anywhere.
So I looked at a cellphone accessory suppliers website, to see what they offered.
Url [not allowed]
Nearly all cards listed for the Defy are Class 4, so I figured the Defy must have a Class 4 slot.
I bought a 32GB Class 4 ADATA micro SDHC card, locally. It worked, no problems. I have tested it fairly thoroughly, copied a couple of GB of data to it (over USB) and done a bitwise comparison of the data. No problems. I have taken and viewed photos and movies, and seen no problems. I also tested the memory speed (using SD Tools from Google Play). It gives Write speeds of around 6MB/s and Read around 15MB/s.
However, while I was there, I spied a clearance priced 4GB Class 6 card, so bought that too. (Also ADATA.) Haven't tested that so much, but did run the same speed test in the same Defy phone. Was disappointed to find that the Write Speed is over 9MB/s (though Read is still around 14-15MB/s.)
From this, I conclude that the correct speed Class for the Motorola Defy SD card slot is actually Class 6 (and that I should have bought a Class 6 card... )
Can anyone tell me whether this is correct, and where, if anywhere, the actual manufacturer's SD card slot spec's are published?
BTW, the original 2GB card looks, from SD Tools, to be a Class 4 card, though oddly, the speed seems to vary a lot with that card. It sometimes, at the start of the test, goes as high as 10MB/s, but usually stabilises and ends at about 5.6MB/s (Write speed).
Also, can anyone with a Class 10 card (that works) in their (Original model) Motorola Defy please report here what data Write and Read speeds SD Tools reports? I think everyone with a Defy who wants to upgrade their memory would be very interested to know!
I think it would be great to finally nail this issue down.
Regards,
D2

Related

What speed SD for the Universal?

I havent looked too deeply into this, preferring to ask like .. So please don't eat me.
Its late and all ..
I'm wondering what speed the SD card reader in the Universal is?
Is it worth spending a little extra on some 60x Corsair SD cards or should I just get the bargain bin stuff since the Universal maybe doesnt have a particularly quick card reader?
Any advice welcome. I plan to use this is a system disk with seperate 512 card for my MP3's and pod casts/documents. THAT will be cheap stuff.
But for the main I need a 1gb system disk for storing apps and system stuff.
Compared to a dedicated USB card reader for the PC, the Universal is extremely slow - I have tested this with my 150X 2GB SD card. So unless you plan on using it with a PC card reader, it doesn't really matter
Accessing the SD card through activesync was at least 10 times slower than the card reader...
I did a small test with Pocket Mechanic.
1. My "normal" 2 GB sandisk gives 0.84MB/sec
2. My super duper Extreme III Sandisk 1 GB gives me a whopping 0.88MB sec.
Nr . 2 card, in my portable, writes files much, much faster than nr.1.
You can see however that in my Jasjar the difference is nearly zero.
I would say: go for the cheapest, but I am not a great technician.
Huib
Thanks guys ..
Very informative and will help me get the right card. ie. the cheapest!
-Gubbs
Hi
I have not noticed any difference between a basic Sandisk card and a so called 66x KingMax card when used in the exec.
I do notice a difference between these two cards when using them with my digicam - the multishot mode (2 frames/sec) actually works cause the camera is able to write to the card quickly enough. With the slow card, cam kept pausing to write its cache onto the card.
I am not sure that pocket mechanic tells the truth! Likewise, timing a copy from the internal flash to an SD card is not gonna give accurate results (speed of internal flash may be bottleneck). On Wm2003 devices this was possible cause RAM is loads faster than flash still.
You cant test the speed of the SD reader in the exec over activesync tho!! Its a USB 1.1 device (max 11Mbit) and on top of that activesync treats it as a 10Mbit network card. Max you'll see after overheads is thus around 1MByte/sec
Nigel
veletron said:
Hi
You cant test the speed of the SD reader in the exec over activesync tho!! Its a USB 1.1 device (max 11Mbit) and on top of that activesync treats it as a 10Mbit network card. Max you'll see after overheads is thus around 1MByte/sec
Nigel
Click to expand...
Click to collapse
Certainly much better to do it that way.
Huib
ok i m having problem to decide as well...
anyone has a more concrete data about this ?
i m thinking whether to choose a normal 66x or 133x ...
getting 2gb sd card.. either transcend or pretec...
by the way exec sd slot is 1.01 or 1.1 specification?
hope someone has a benchmark to share.. thanks
1gb Scandisk does the job for me.
Watched a movie on it the other night, perfect. Plenty fast enough.
Its HTC so you can be assured it will be genius design with cheap crap chipset.
Bit like an Italian sportscar.
get one of those sd-usb card combo's....if u can find one going at a decent price.
saves the hassle of card readers. the LAST thing anyone needs is yet another wire lol

Transcend 2GB 80x / 4GB miniSD

I just bought an transcend 2gb 80x card and it works untill i leave the phone for a bit or it has done some kind of acces to the card and all of a
sudden the card is not seen by the phone.
Now i am going to write a mail to see what can be the problem since it
works fine in my card-reader in my pc. On the other hand it works fine in
the phone too untill it suddenly dissapeared. One time i seen this 2 files that
where on the card after it "died" .. one little file and some sort of bin file .
which looked to me like it was some sort of cd image..
Anyone had similar problems ?
Allthough i read somewhere that so called SDHC are not supported i found
some registry values in the device area that at least tells the operating system supports it, so does the build-in card reader. which suggests that 4gb cards should work, but i'm no guru at this matter so i cant tell for sure.
here is a site which has a lot of minisd cards http://www.flash-memory-store.com/mini-secure-digital.html
If you bought a 4gb miniSD card you got ripped off.
There is no such thing available to the public yet.
Any miniSD card claiming to be 4gb are just miniSD cards that are actually smaller capacity with hacked firmware to make them appear as 4gb to operating systems.
If you don't believe me have a look at Transcend's official website:
http://www.transcendusa.com/Products/ModDetail.asp?ModNo=17&LangNo=0
No 4gb cards listed. Only 2gb.
SanDisk is working on a new miniSD standard called miniSDHC that will be able to hold 4gb of data, but current miniSD devices will not be able to use this miniSDHC cards.
Read up on SanDisk's website here:
http://www.sandisk.com/Corporate/PressRoom/PressReleases/PressRelease.aspx?ID=3530
I beg to differ. I just loaded my MiniSD card that I bought on eBay PAST 2gb (with porn RSS feeds nonetheless) and it's working just fine. There have also been other successful cards purchased from well known retails.
2GB MiniSD formatted = 1907MB (or around that) showing on the memory readout for memory card... I have used 1964mb and am still writing, now 1965, and 66. As long as it works and I don't lose data, fine. I could care less. Most of us have hacked our Wizards, which could have severe repercussions in the future, but does it really seem like any of us care?
If they were hacked to appear as 4gb and only 2gb, that would MEAN that at 1907mb, my device would have crashed because it couldn't write anymore even though it thinks it can. However, that is not the case with these cards, and to hack the card to put some sort of "compression" built in, is impractical, not feasible, and impossible without some software or extra hardware chip in the middle of the entire process, thus raising the cost of them. There is none of that at work here, this is straight up flash memory, 4gb of it. The fact that I'm speaking from experience, watching my Wizard RIGHT NOW writing more than 2gb of data to the card with no problem, able to play the video back without issue, says, in all practicality, that the damn thing is 4gb and works. Now if you want to dispute this I am attaching screenshots from inside the device proving this point.
Oh and if you're looking for a working 4gb card like I have: http://forum.xda-developers.com/showthread.php?p=1100646
You don't seem to understand how solid state memory works.
Come back in a month or 2 and let me know how well that card is working for you
I gaurantee you that card will die in a short amount of time.
GldRush98 said:
You don't seem to understand how solid state memory works.
Come back in a month or 2 and let me know how well that card is working for you
I gaurantee you that card will die in a short amount of time.
Click to expand...
Click to collapse
So what you're sitting there telling me, is that manufacturers knowingly produce 4gb+ capacity flash chips, and then mark them 2gb with a "firmware" flash? How insane is that? Flash chips are based on the same level of technology that RAM is. Switching circuits, 1 OR 0, and there is a predefined and set amount of switching circuits on any chip as manufactured by the companies. Now, what you're sitting here trying to tell me, is by a simple "firmware" flash, these chips are holding DOUBLE their original PHYSICAL capacity on a technology that is a static, unexpandable, and certainly not double-bit compatible. How much else are you going to say to defend this? Just your "wait 2 months and tell me how that card is working"? It's not going to cut it, you cannot make a 2gb card appear as a 4gb and then enable it to fill the card to 4gb. There is only 1 type of "flash" memory that is double-bit, it's expensive as ****, and would certainly not afford such low pricetags as we're finding. Your arguement is flawed. Show me some documentation on a solid state flash card, NAND to be specific, that has the ability to "expand" it's capacity BEYOND it's physical limitations. Look up http://en.wikipedia.org/wiki/Flash_memory
Just defending my point.
I'm not going to argue a point I already proved in my 1st post.
Read the 2 links.
as far as i know there is no miniSD 4gb card. THERE IS HOWEVER A 4Gb SDHC mini. From other posts that i have read on cingular, all you need to do is forat the card on an external reader on your computer and then the card will read and write like a mini SD card
http://www.transcendusa.com/Products/ModDetail.asp?ModNo=129&LangNo=0
Just wondering why there is still so much rumor about that topic - dozens of people already reported 4GB miniSD cards to work on their PDAs and hundreds of them have been sold at ebay. Nobody ever complained about a 4GB card (NOT marked as SDHC) not to work on their PDA - so what's the point in questioning that?? I personally don't care whether these ones are HC or not, as long as they work and hold 4GB of data, which was proofed by so many people...
DoctorT said:
Just wondering why there is still so much rumor about that topic - dozens of people already reported 4GB miniSD cards to work on their PDAs and hundreds of them have been sold at ebay. Nobody ever complained about a 4GB card (NOT marked as SDHC) not to work on their PDA - so what's the point in questioning that?? I personally don't care whether these ones are HC or not, as long as they work and hold 4GB of data, which was proofed by so many people...
Click to expand...
Click to collapse
THANK YOU! Yeesh, how hard is it to ACCEPT that there are 4gb miniSD cards, even if they're NOT made and marked by some big overpriced company? You'd buy a stick of 4gb DDR or DDR2 RAM for your computer if it was available, even if it was with a brand you'd never heard of, or no brand marking at all. Why the hell should miniSD be any different?
GldRush, your two links, point to a specific manufacturer's "standards" for how to make a 4gb miniSD work (when other companies have already adapted normal miniSD to 4gb), and an online retailer (who's not obligated to carry a 4gb miniSD or may not have any in stock). My link however points towards known information proving my point in the fact you can't have more memory than there is physically storable, no matter how you "hack" a card. (Change alloc tables, it just changes sector sizes, compression is illogical and impractical, hacking the card to appear as 4gb when it's a 2gb yields the results we saw from another person's venture showing half-full card all the time.) You say your point is proven with those 2 links, it's not.
can you point us to this topic jimmyjam ?
as i looked on transcend site i came up to this:
compatibilitylist for wizard memcards
now my question is wouldn't it be a strange idea to think this 4gb minisd normal ones are actually refurnished mmc cards ?
here is the datasheet of the card i bought :
pdf datasheet 2gb 80x transcend minisd
so it should be working fine in my wizard but it does strange things... same happend in this other wizard before and after a new rom upgrade.. and in this nokia n73... but the cardreader which is a usb2.0 56-sorts-of-memcard-reading device has no problem with it. I'm totally lost on it. could it be the power the card needs or its thin size ?

HD2 USB transfer speeds?

I've looked everywhere. No one seems to have posted them. What are they?
Right now I'm a bit confused. Since this is an awesome device you'd think it would be fast in every aspect. It is, except for USB file transfers.
I'm running on Windows 7 Ultimate. I backed up everything from my phone to the computer with a data transfer rate from the SD card, in the phone, of 4.5MB/s. I then formatted the card (read earlier that this would help with the HD2 lock-ups) and copied everything back onto the SD card in the same fashion, through the phone. The data transfer back is right around 2.5 MB/s.... ???
I've tested all the ports around the computer, each are about the same. Anyone have any idea on how to fix this?
First thing would be to tell what kind and class of microSD card you have...
That would really depend on your SD card "class".
The higher the class, the faster it is capable of performing reading and writing operations.
But it's better to avoid the 16GB cards... the larger capacity cards take much longer to read... regardless of classifications or brand.
Something like a 4GB - Class 6 card is excellent.
I've read that it's only a class 2 MicroSD. Do you guys know where I can get class 4, or even a class 6 MicroSD? Whichever I get however depends on the max speed of the HD2. For example, I don't want to buy a class 6 and find out that the HD2 can only handle speeds up to the class 4. There is a $30-$40 USD difference.
Thanks for the SD info, it definitely helps. But now we're brought back to my original question. What are the max transfer speeds through the phone onto/from the MicroSD card? Has anyone found out?
personally i wouldn't do large data backups through activesync/MDC with the card still in the phone.
its simple to remove the card and put it in the supplied adapter card for use with sd_readers.
i bought a usb1.1 reader from a 'pound' shop, copying large files takes alot less time (average 10-11mb/sec) with my more expensive usb2.0 reader its even faster (average 50-60mb/sec)
card class does make a difference, but then so does sending large amounts of data through a 'middle man' like activesync or device center.
budget SD reader FTW
That is a good point, and I agree is faster than through the phone. For me though I have a few accessories on the phone which make taking the SD card out quite a pain.
I have an invisishield on the screen, and a poly-something or other high density plastic cover to replace the cover that came with the phone,-- It grips around the HD2 tightly. The cover is wonderful, but it tends to interfere with the invisishield. So if I am continually taking the cover on and off to get the SD card out I will eventually bend up the edges of the invisishield and will need to get that replaced.
In my best attempts to keep the phone nice I'm going to have to stick with whatever input/output the HD2-to/from-SD can give me.
choosing disk drive mode rather than active sync is the easiest way to speed up file transfers.
re: the figures you gave in post 1, write is always slower than read.
Forgot to mention, it was in 'disk drive mode'.
Btw, I found that the HTC HD2 is USB 2.0 Hi-Speed capable out-of-box. (I'd post a link, but forums wont let me, being new), and Hi-Speed USB can transfer 480Mbits/s, or ~57MB/s (Wikipedia, Universal Serial Bus, Signaling).
The Class 6 MicroSD card can write 48Mbits/s, or 6MB/s (Wikipedia, Secure Digital, Speeds). Easily obtained for the HD2.
Assuming this is everything that needs to be dealt with, this should work out wonderfully. I'll be writing files 300% faster with a class 6, and reading a whole lot faster (thanks Samsamuel, forgot about that read/write differences). Question is though, is this all? Or do I need to install some hi-speed usb driver on the computer? Or are there other things I'm not seeing that need to be dealt with?
its also worth remembering when you are doing the maths that USB loses around 25/35% to networking overhead. (the data that makes up the packet that holds the data you are transferring)
So, 480 Mbit = 60MBytes total = around 35Mbytes actual data transferred per second. (Results vary depending on the system, the cable, all kinds of things, but 30-35 is average, a little more in a testbed situation.
So I guess I'll just have to suffer with 219% faster instead of 300%... Well, looks like I'm returning the HD2!

Samsung 32GB class10 only 5MB/s

i bought this new card and was happy that i have a fast card now and that the transferring data with usb connection would be faster, but it is not.
The writing speed is between 3-5 MB/s, not better then my old Sandisk 16gb class2 card.
I have aMAGLDR v1.13 with CWM v.5.0.2.7.
I use the usb mount from CWM and transfer data through it, but it is really a disappointment. I format the card through different ways, all without any success.
On the my computer the card is not faster with FAT32 (with the micro sd adapter), when i format the card to NTFS it is really fast, but i can not use it on my phone with NTFS. Is Fat32 the problem here?
Does someone have the same card and could approve this problems or am i the only one?
thanks in advance /masteroe
try this..
get into android and see if this app works...it will increase the cache...you should see difference..
thanks, i tried this already without any success.
it seems that the problem is not this value. In the CWM this value is not interesting at all.
As i told you on Windows i have same performance issues with FAT32....
If you bought your SD card from Ebay you probably bought a fake Class 10
domimatik said:
If you bought your SD card from Ebay you probably bought a fake Class 10
Click to expand...
Click to collapse
it is not from the bay it is a original card (i hope) from amazon.
Class 10 only assures you of 10MB/S on sequential write, so if the card has been written to a few times there could be some drop due to fragmentation. Also, there are various overheads to consider, moving the data about, issuing the write command to each block, wait for a confirmed write response, blahblah.
Here
http://www.smxrtos.com/articles/whiteppr/flashperformance.htm
Is a (very) technical explanation, which rather happily (or not) examines a 10MB/S raw write speed SD as an example (scroll way down) and calculates an actual write speed at 5MB/S.
samsamuel said:
Class 10 only assures you of 10MB/S on sequential write, so if the card has been written to a few times there could be some drop due to fragmentation. Also, there are various overheads to consider, moving the data about, issuing the write command to each block, wait for a confirmed write response, blahblah.
Here
http://www.smxrtos.com/articles/whiteppr/flashperformance.htm
Is a (very) technical explanation, which rather happily (or not) examines a 10MB/S raw write speed SD as an example (scroll way down) and calculates an actual write speed at 5MB/S.
Click to expand...
Click to collapse
thanks for your information, but i think there is an other problem, my class 2 card is faster as it seems . I'm copying 700 MB with 1,5MB at the moment, that is really frustrating....
hehe yea i know what you mean, mine always runs far slower than it probably should too, one point some meg/s, for both my class 2 and a class 6, never any faster, either through cwm, android usb mass storage, or my card reader. (Lots of built in card readers are just usb readers mounted to internal usb headers, and are often only usb1, which doesn't help, , usb has a lot of overhead, lots of info regarding usb overhead here http://www.smxrtos.com/articles/usb_art/usbperf.htm (if a little old))
i will give back the card. This card does not make sense with HTC HD2..
Thread can be closed ! Thanks anyway ..

Defy - What's the Fastest SD card speed?

Hi fellow Defyers,
Didn't get any answers to my last post, so I obviously asked the wrong question.
I'm wanting to know what's the correct, fastest speed Class microSD card for my Defy. Nobody really seems to know.
There should be a spec, but I can't find it. I've searched all over this forum, but haven't found a answer. There are lots threads about which brands and classes work and which don't, but nothing much about real world speeds. I know that speeds vary. It depends on the Hardware, ROM and other Software running, but there must be a "best" answer.
I suspect my Defy SDHC card slot is really Class 6 speed, but lots of people report using Class 10 SD cards. What I want to know is are they actually faster?
I've installed the free "SD Tools" SD card Speed Tester app from the Market - Google Play. It's a very simple app, but gave me no problems. Except, speeds vary. I suggest a Reboot, don't open anything else and wait 3 minutes before running, to get the best result.
I get 9.3MB/s Write and 14.4MB/s Read from an ADATA 4GB Class 6 card.
I'm running Android 2.2.2. Can't really root it 'cos it's the Company-supplied phone.
Anyone getting much better than that out of Class 10?
Please post your results [Defy Model, Android ver, Card Make, Size, Class, Test App, Write MB/s, Read MB/s] here!
Mine:
MB525, 2.2.2, ADATA, 4GB, Class 6, SD Tools, Wr: 9.3MB/s, Rd: 14.4MB/s
Cheers,
D
DefiAnt2 said:
It depends on the Hardware, ROM and other Software running, but there must be a "best" answer.
Click to expand...
Click to collapse
There's apparently another factor that I haven't tested myself and forgot to mention, but that's SD Card format. Seems the cluster size also makes a difference, though that will (should, may?) depend on the type of test. Sustained, large reads and writes (as done by SD Tools) should be faster with a larger cluster size, and I think sustained speeds are what matters for shooting video, or playing HD movies.
To determine your card Format and Cluster size (one way - are there better ways?) is to connect to USB, go to a Command prompt and run CHKDSK X: where X is the Windows Drive letter for your SD Card. The first line gives the Format type. Further down, the Cluster size is the number of "bytes in each allocation unit."
BTW, if CHKDSK says you have errors on your SD Card, well, be careful! You may have errors. Or, you may have a Card Compatibility issue. But I wouldn't go Fixing them with CHKDSK. I'd investigate carefully as to the cause before going further. Like, take the card out of your phone and connect it to a PC using an SD Card Reader, and check it again. If there errors aren't still showing, you definitely have compatibility problems. And, if there are still errors, it very likely means your SD Card data IS corrupted, and was probably caused by a compatibility issue or some other problem like a phone lock up while writing data, or maybe a Battery Pull (VERY BAD IDEA) also while the card was being written.
I'm not exactly sure about how to determine the Sector size for SD Cards (which is why I'm talking Cluster size), but for Hard Disks it's normally 512 bytes / sector. SD Cards could, I suppose be different as they are not rotating media, but I haven't yet figured out how to get that data out of them. Anyway, assuming 512 bytes / sector, 32k sectors (32,768 bytes) per cluster is obviously 32,768 / 512 = 64 sectors per cluster.
Please feel free to post your results [Defy Model, Android ver, Card Make, Size, Class, Format, Cluster size, Test App, Write MB/s, Read MB/s] here!
Mine:
MB525, 2.2.2, ADATA, 4GB, Class 6, FAT32, 32k clusters, SD Tools, Wr: 9.3MB/s, Rd: 14.4MB/s
Cheers,
D
P.S. I found a cheap 8GB Class 10 card... Interesting!
just tested my configuration:
bayer mb525, cm7.2 (2.3.7), kingston class 10 16gb sdhc, formatted fat32 with 64k cluster size, and my results are 10.7w/25.2r.
sent from my cm7 defy...
Please ask all questions in Q&A. Thread moved there.
I get 4.5mb/s write -14.3mb/s read on an class 2 sd I think, not sure, MB526 2.3.6 stock Android
Hi Feche, zakoo2
Thanks for that.
Turns out, nothing is simple. I have now found that it depends a lot on what "services" are also running when you run the test.
For example, if I have Data enabled, Bluetooth enabled and Satellite enabled (but none active), I get significantly lower readings, especially for Read.
On top of that, SD Tools seems to give more consistent results if you ignore the first test and run it a second and third time.
However, I have also found that my MB525 DOES get faster Read results with a Class 10 card. Only slightly faster for Write though.
I guess this means the MB525 Hardware is (more-or-less?) Class 10 capable. At least, for Read. Or, it may also depend on the individual card Manufacturer. A-Pacer not being a Top of the Line brand.
My best results, with all the services turned off:
MB525, 2.2.2, A-Pacer, 8GB, Class 10, FAT32, ??k clusters, SD Tools, Wr: 9.7MB/s, Rd: 20.7MB/s
(Forgot to check cluster size, sorry.)
I'll post other results later.
Cheers,
D2

Categories

Resources