Re: I'm designing a Thumb Drive
- From: Martin Brown <|||newspam|||@nezumi.demon.co.uk>
- Date: Thu, 10 Jan 2008 01:42:55 -0800 (PST)
On Jan 10, 6:16 am, ChairmanOfTheBored <RUBo...@xxxxxxxxxxxxxxx>
wrote:
On Wed, 9 Jan 2008 16:55:21 -0800 (PST), "www.interfacebus.com"
<Interfacebus.Engin...@xxxxxxxxx> wrote:
Who manufacturers or sells USB style shells forthumbdrives. I've
been looking around but can't find anything.
I'll fab the USB interface and Flash memory on a CCA, but I need a
case to put it in. Who make thos cases? A Plastic or Metal case would
be ok. The more links I get the better. This message was cross-
posted......
You're never going to beat the leaders of the industry at this game.
http://www.corsairmemory.com/products/survivor.aspx
http://www.corsairmemory.com/products/voyager.aspx
26MB/s write, 34MB/s read.
Good luck... you'll need it.
I previously asked this question on comp.system.ibm.pc.storage and got
zero answers, but since this newsgroup contains a large number of
computer savvy folk with the right sort of kit and an inclination to
test things as opposed to believing the manufacturers marketting hype.
Here is a repost:
I wonder if anyone can point me at reliable benchmarks of measured
flash memory performance?
Or recommendations based on first hand experience with the larger
drives. 8GB, 16GB.
I found the following URL with some older drives in the 1-2GB range
tested with h2benchw 3.6, but AFAICT there is very little else out
there with real measured performance figures. I am interested in
buying the largest USB flash drive I can get consistent with still
getting around 20MB/s data rate for read and the lowest possible
random access seek time. I don't care much about the write time as I
only expect to write the data once. Cheaper is obviously better. (and
I am hoping it will be a lot quieter and cooler than a 10k rpm
spindle)
The benchmarks that I have found are summarised on Toms Hardware
page:
http://www.tomshardware.co.uk/data-transfer-on-the-run,review-1305-10.html
All of the drives reviewed there are too small for the data I need to
store. My bog standard no-name 1GB manages 12MB/s read rate and that
is too slow for what I want to do. It is also much too small. The seek
time is also important as I expect the vast majority of accesses to be
uncorrelated and random.
I was considering the Corsair 8GB or 16GB basic blue units, but I was
a bit alarmed at the apparently slow ~30ms random access time shown
for their smaller drives cf others like Kingston, Crucial and Memina
in at around <1ms. I have also seen a couple of user reviews where
people said the 16GB unit was much slower than the 8GB - but they may
have been mistaken since others seem not to have a problem.
This isn't for Vista so I don't care at all if the drive is readyboost
compatible or not.
Thanks for any suggestions or enlightenment. I don't like buyng a pig
in poke.
Anyone care to benchmark their thumb drive(s) with hbenchw 3.6 for
read write MB/s and seek time in ms ?
Cheap ones give something like 11 5 1 (read write seek). Really
bad junk ones 4 4 2.
Regards,
Martin Brown
.
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- I'm designing a Thumb Drive
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- I'm designing a Thumb Drive
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