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7970 X2 (OC) PCIE 3.0 X8 VS X16

Last response: in Graphics & Displays
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January 22, 2013 2:44:05 PM

G'day,
I'm just curious to know what you guys think on this issue.
I'm wondering if having my 2 MSI 7970 Lightning cards (1200/1700) running at PCI-E 3.0 X8 is a bottleneck by any sort.

When running 3DMark11 and running it at absolute max settings, the gpu utilization is as follows:
GPU1: 91-98% (Ranges)
GPU2: 99% (Solid 99%, never moves)

This is utilization when using a resolution of 1080p as well, 1 monitor.

So basically, if I was to have, lets say, a monitor at 2560x1440 and a monitor at 1920x1080, connected, would PCI-E 3.0 8X bottleneck my overclocked graphics cards at all? By 1%, 5%, 10%, any major difference?

Thanks!

More about : 7970 pcie x16

a c 182 U Graphics card
a b C Monitor
January 22, 2013 2:46:21 PM

There will be no bottleneck
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January 22, 2013 2:56:28 PM

ASHISH65 said:
There will be no bottleneck


None what so ever? Even if the GPU is pushed to it's absolute limits with two screens?
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January 22, 2013 3:06:06 PM

From reading specs from here about my processor:
http://ark.intel.com/products/65523
3770k only seems to support 2 x8 cards?
"PCI Express Configurations 1x16, 2x8, 1x8 & 2x4"
Correct me if I'm wrong?

I'm an idiot, don't mind the above...

Thanks
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!