View Full Version : SDHC Class 2 vs. Class 6
wildwing94
04-24-2007, 13:46
Does anyone have any experience with both and notice a huge difference? I'm planning on buying an SDHC card for expansion obviously and wanted to know how painfully slow a class 2 SDHC card is. If it's pretty much the same as the D2 transfer speeds, I'm not too worried about it.
The writing is quicker on class 6, unless you change your music all the time its not worth the difference in price.
M4psycho
04-24-2007, 20:40
class 2 means you're guaranteed at least 2MB/s write speeds, and class 6 means you're guaranteed at least 6MB/s write speeds...you do the math and figure how fast that is =p. On another note, USB2 bandwith is around 60MB/s I believe, so like all technology, you're limited by the speed your devices can operate at, not the speed at which information can be sent.
If you get a class 6 card, you'll want to get a card reader that can transfer at that speed. It's hard to know about what SDHC reader is capable of that speed, as there aren't many readers out yet, and the ones that are available don't have much technical info online.
So if anyone gets a high-class card and has a reader that can do the speed, please share the info, it's much appreciated!
With that said, I'd be content with a class 2 card. A 32gb class 2 card [laugh]
wildwing94
04-25-2007, 10:36
Thanks for all the input. Mainly I'd be using it for video (full length movies) and I'd be changing the videos out after I watch a few of them. But if it takes 10 minutes to transfer 1 gig, then that's just way too long since 6 gigs would already be an hour.
People in another thread i can't find right now reported rates aroung 6MB/sec to the device i think, but really, it will only save time once when you load the card so if the price difference is big, don't worry about it... or get a class 4 ;-)
gruntergraphix
05-04-2007, 15:38
ok guys, i have tested this out cause i just got some cheap class6 Adata 4gb cards $77 bucks from NZ
i have tried with the SDHC card in the D2 but although you can transfer data that way it is way to slow
it was slower that say a normal 2gb card
so i had to buy a card reader. Which as you say are far and few
so i got a 4gb sandisk class2 with cardreader and to me there wasn't alot of diff with that of a 2gb blue sandisk.
then i put in my class6 Adata 4gb and it was a huge diff
was about 3mins(class2) for 460mb compare to 45sec on (class6)
aussie_017
05-08-2007, 04:51
ok guys, i have tested this out cause i just got some cheap class6 Adata 4gb cards $77 bucks from NZ
i have tried with the SDHC card in the D2 but although you can transfer data that way it is way to slow
it was slower that say a normal 2gb card
so i had to buy a card reader. Which as you say are far and few
so i got a 4gb sandisk class2 with cardreader and to me there wasn't alot of diff with that of a 2gb blue sandisk.
then i put in my class6 Adata 4gb and it was a huge diff
was about 3mins(class2) for 460mb compare to 45sec on (class6)
What about class 4, how long do you think it would take to transfer that same 460mb file 1min 30sec? (i.e would it be exactly half?)
Where did you buy a cheap class 6 card from? (link please)
i actually found a shop here in spain that charges you 68 euros + tax for a 8GB class 6 SDHC card, depending on how the month goes, im going to order one and see,
gruntergraphix
05-18-2007, 20:28
i got mine from nz, but they only prob is that they don't ship to aus. But lucky i have some friends that live there.
http://www.acquire.co.nz/acquire/default.asp?PageID=ProductDetail&pf%5Fid=690791&dept%5Fid=1600020
they have dropped in price too. i paid $73
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