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Old 02-14-2012, 08:20 PM   #1 (permalink)
Junior Techie
Join Date: Dec 2007
Location: sometimes in Ohio, sometimes Indiana
Posts: 57
Default USB 3.0 issue

I've been playing around with my USB 3.0 trying to get the best speeds possible out of it. Supposedly 4.8gb/s, I know that's not happening, but I would like at least like 400mb/s.
Currently I average around 40mb/s. It feels like its still running 2.0.

Gigabyte EP45-UD3P
Intel Core 2 Quad Extreme Q8200
6gb Corsair ddr2 800
Acomdata PCIe USB 3.0 Host Controller

Writing to a Segate 2.5" 5400rpm drive in an Acomdata external USB 3.0 enclosure.

I looked into my actual driver settings before coming here, I was running NEC host controller firmware, I've updated that to I was running driver version 1.2 something, now its running Also comes back as Renesas instead of NEC, (which I understand fully why.)

After all of that, I still cannot achieve really any faster than 40mb/s.

Is this my card? Is this my drive? would a powered drive that spins faster make a difference?

Thanks in advance!

Edit: this is the exact enclosure:

and this is the exact card:

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Old 02-15-2012, 02:36 PM   #2 (permalink)
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Join Date: Dec 2006
Location: Twin Cities
Posts: 3,315
Default Re: USB 3.0 issue

if you average around 5 MBps, you might have a defective enclosure.
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