GTX 570 compatible with the new PCI 3.0 mobos?

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sisir

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Feb 16, 2012
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Hello,
In April 2012, after the release of ivy bridge processors, I'm planning to upgrade everything except for the graphic card. My current gfx card is the nvidia geforce gtx 570 (PCIe 2.0). So my question is, will my gfx card which is PCIe 2.0 support the new mobo with PCIe 3.0 and the new processor with PCIe 3.0? I can't afford to buy a new gfx card with PCI 3.0 which is about to release. So will my old gfx be compatible with the new parts? Will it work without any issues? Thanks.
Sisir
 
Solution
All versions of PCIe devices intercommunicate well. The highest mutual version of the interface card and the host bus determines how fast they communicate.

A 1.0 GFX card in a 3.0 system will run at 1.0 speed.
A 2.0 card in the same system (like you will have) will run at 2.0 speed, and so on.

The reverse, with a faster card in a slower system, is also true; the card will run at whatever speed the system can attain.
All versions of PCIe devices intercommunicate well. The highest mutual version of the interface card and the host bus determines how fast they communicate.

A 1.0 GFX card in a 3.0 system will run at 1.0 speed.
A 2.0 card in the same system (like you will have) will run at 2.0 speed, and so on.

The reverse, with a faster card in a slower system, is also true; the card will run at whatever speed the system can attain.
 
Solution
performance difference between 2.0 vs 3.0 pcie.

HD7970-68.jpg


HD7970-69.jpg
 

And it will perform about 0.1% faster. PCIe 3.0 is not a feature that should get any weight when considering a graphics card upgrade. Most cards don't even suffer a huge performance hit when run in a slot operating at x8, as most SLI and Crossfire setups do. Once textures are loaded into the graphics card's on-board RAM, anything more than about 2GB/s between the card and the CPU and RAM seems to be underutilized.
 
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