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.
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.