before i buy gigabyte hd7790 2gb ddr5 i want to know my mobo will fit with that graphic card or not. my mobo is P31-ES3G and my mobo is PCIE 1.0 or 2.0?
It will fit. Your PCIE lans are fine for your gpu. Do keep in mind that your mobo is quite old. If your CPU is compatible with it, I do not forsee a problem.