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post #158 of (permalink) Old 03-02-2014, 11:28 PM
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Originally Posted by Americonfusion View Post

They are all on 1x-16x powered ribbon risers

Thank you!

For lack of better ideas, I'm swapping out Windows 8.1 x64 for Windows 7 x64 to see if there is any difference. I know that at least 2-3 people with 5+ GTX 750 Ti's have achieved 300+KH/s per card concurrently on Windows. I haven't been able to figure out the differences between my setup and these other people yet. I know that using Ubuntu 12.04, I do see better performance/scaling when running the cards concurrently.

I just tried two different systems running Windows 8.1 x64 with a GTX 750 Ti plugged into a x1-x16 USB3 riser assembly. Both perform consistently bad.
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