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SD speeds

Started by Altor, July 08, 2006, 07:24:28 PM

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Altor

Hi, I'm inevitably going to wind up buying a SC micro when it comes out... thing is, I've heard weird things about needing X speed of SD card for things to work properly.  But, I can't for the life of me find any MicroSD cards that have a 40x or 100x or whatever rating.  Are they all just a lot faster now compared with old vanilla SD?

ReRuss

50x works fine , plenty fast enough , I have a Kingston 50 512M , and a Lexar 60x 1G , both work absolutely fine

me personally , I wouldn't go under 50x

Jinnai

Personally i wouldn't go under 60x. You can go above it, but it will just be mostly for transfer to/from your computer.

Make sure its not average, but sustained, otherwise get something about 60x.

Scor

Is there any information on the specs of the micro?
Like, will it only fit in a DSlite and not in a normal DS, is there still GBA functionality etc.?

Blebekblebek

it just the same
SC only use 30x speed maks, so 50-60x speed is enough, the only matter is if you can find SD Card that have 150x w/ only 60x average sd card then buy the 150x SD card

rocky

Im geting one of these these
that will be cool having a
microSD to MiniSD then
MiniSD to SD then
SD into the supercard.

I cant wait for the supercard lite Im getting it as soon as I can.

EDIT: wait what is the difference between micro SD and transflash I thought they were the same?

Blebekblebek

read: http://en.wikipedia.org/wiki/Transflash

btw isn't that ebay selling only the converter (port, box whatever you call it) microSD to fit into SD Card Slot
$9.9 for 1GB???? so good to be true...

Altor

I can't find a single ebay auction with a microSD card's speed specified.

How fast in kilobytes per second is a 60x?  Sometimes they'll say the speed it reads/writes but don't actually give it a WHATEVERx rating.

edit: They ARE rated in kilobytes per second, right?  You'd think that since the card is 512 megabytes, they'd say it writes at 1.5 mbps and mean megaBYTES not megabits, for consistency, but then I know marketing people have no clue what "consistency" means.

Blebekblebek

the speed is base on CD ROM Read Speed
1x CD ROM = 150kByte/s

so just calculate it
60x = 9000kByte/s

that's kiloBYTES not kiloBITS so basically you get 9MB/s for 60x speed
and get 22,5MB/s for 150x SD Card Speed
read about speed more here: http://www.mouse2house.co.uk/index.php?show=html&page=articles/october05/15_memcardspeed.htm
if you read the article the writer seems don't know what's the different w/ Caps letter
b = BIT/s
B = BYTE/s

1 megabyte/s = 8 megabit/s

Jinnai

Thanks Blebekblebek. I always wondered what the #x stood for. I was able to compute the kilobits per #, but didn't recognize what it stood for.