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[Anandtech] PCI-E 3.0 Scaling

post #1 of 49
Thread Starter 
http://www.anandtech.com/show/5458/the-radeon-hd-7970-reprise-pcie-bandwidth-overclocking-and-msaa

The good news is that there isn't really any performance difference between PCIE 3.0 X16 and PCIE 2.0 X16:

Some charts:
43816.png

43817.png
Edited by 996gt2 - 1/27/12 at 7:05pm
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post #2 of 49
hmmsmiley02.gif
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post #3 of 49
About the same when PCI-e 2.0 came out. Took a couple generations of cards before there was a decent performance benefit.
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post #4 of 49
There doesn't exist a graphics card that has PCIe 3.0 specification, we won't know until there is a card that utilizes the PCIe 3.0 specification.
post #5 of 49
By decent, you mean 3%.

That was about the biggest difference...even so ~.

I doubt any single GPU will use up PCI-E 2.1's bandwidth for a few more years yet.
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post #6 of 49
Cool, I get a slight boost with my 590 in my RIVE biggrin.gif
post #7 of 49
Thread Starter 
Quote:
Originally Posted by Systemlord View Post

There doesn't exist a graphics card that has PCIe 3.0 specification, we won't know until there is a card that utilizes the PCIe 3.0 specification.

Radeon 7970 is PCIE 3.0

See here: http://www.amd.com/us/products/desktop/graphics/7000/7970/Pages/radeon-7970.aspx

"The world’s first 28nm GPU. The revolutionary new GCN Architecture. Ready for DirectX® 11. PCI Express 3.0.1 The AMD Radeon™ HD 7970 is your personal checklist for ground-breaking technology."
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post #8 of 49
Quote:
Originally Posted by Systemlord View Post

There doesn't exist a graphics card that has PCIe 3.0 specification, we won't know until there is a card that utilizes the PCIe 3.0 specification.

Have you been living under a rock at the bottom of the ocean floor? Jeez.
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post #9 of 49
How about some 2- and 3-way crossfire comparisons?
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post #10 of 49
Disappointing but you'll need to wait a bit, as usual.
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