How fast are SSDs when moving a file from a usb or or copying a file for example?
I'm copying a 6GB file from a random 8GB usb and the transfer speed is 15 MB/s
Is that ok?
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Not all SSDs are created equally... typically they are faster than HDs, which is much faster than your 15MB/s USB speed. An example, Samsung 64GB SLC SSD can transfer that file around 90MB/s, the Hitachi 320GB 7200RPM drive around 60MB/s, my Patriot Xporter 8GB USB key is around 30MB/s. These figures might not be exact, but what I think they'd get.
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If you're copying from a USB key you are always going to be limited by the speed of the USB key itself. You can't write to the SSD faster than you can read it off the USB key. Think about it!
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Yea i know that's why i said a random usb...
however i also said for example, copying a file... -
My point is your thread is titled SSD Speed and then you ask if the speeds are OK in a situation where the speed of the SSD (or other internal device such as a normal harddrive) wouldn't make any difference whatsoever.
Are you actually more interested in the speed of USB devices? As that's what it's starting to seem like... If so that the figures mentioned above wouldn't be all that unsurprising. -
Whoops. Haha totally missed that. Yeah copying files will be limited to the slowest link: either the USB key itself (as in your 15MB/s), USB connection (max is around 50MB/s for USB), or what you are transferring from (ie. HD or SSD - usually not the limiting factor).
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i know all of what you said... but I'm asking about the speed when you copy a file from you SSD to your SSD .. local copy.. forget the usb
I get 30Mb/s on my current HDD... -
It's a bit hard to say, as has been mentioned all SSDs are different. A fairly decent one, such as the OCZ Vertex or new Samsung MLC device and you could hope to get transfers of 80-100MB/s, although to be honest I'm not sure how much this will be slowed down by reading and writing to the same device.
This is going on fairly intensive reading on the subject recently and looking at many test benchmarks (seems ATTO is the only one that remains reliable.)
Why do you want to know? Surely OS boot times and load of programs or large audio/video projects would be a better guideline... -
Yeah, would depend on what SDD you are talking about, some of the newer ones are alot faster than older ones (even a couple months).
Try reading the SDD thread to get a better idea of what to expect. -
k.. thx a lot for all the responses
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Refer to my first post??
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heres a video to give you an idea of how fast SSD's are.
http://www.youtube.com/watch?v=96dWOEa4Djs
SSD speed
Discussion in 'Sager and Clevo' started by mortalcombat, Mar 10, 2009.