GTX 570 compatible with the new PCI 3.0 mobos?

[sisir]

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

 

[fb39ca4]

Yes, PCIe is forwards and backwards compatible, but will run at the speed of the slowest component.

 

[sewalk]

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.

 

[sunnk]

it will run on pcie 3.0 and will give equal or more performance then 2.0 not less.

 

[sisir]

Thanks a lot for answering guys.

 

[sunnk]

performance difference between 2.0 vs 3.0 pcie.

 

[Kari]

performance difference between 2.0 vs 3.0 pcie.

http://images.hardwarecanucks.com/image//skymtl/GPU/HD7970/HD7970-68.jpg

http://images.hardwarecanucks.com/image//skymtl/GPU/HD7970/HD7970-69.jpg

umm the 7970 is 3.0 card so it can use the 3.0 signaling and extra bandwidth, the 570 won't use 3.0 but stick to the 2.0 spec

 

[sewalk]

umm the 7970 is 3.0 card so it can use the 3.0 signaling and extra bandwidth

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.

 

[Kari]

^^very true

though with 3.0 one might be able to use x16/x4 crossfire setup without a performance loss

 

[sisir]

Best answer selected by Sisir.

 

[Maziar]

This topic has been closed by Maziar