Intel (R) Core (TM)2 Duo CPU E4500, what graphic cards can install on it??
The compatibility of the gfx card is dependent on the motherboard, not the processor. But if the board has a PCIe X16 slot, you can use any card that fits the slot no matter what version PCIe the card is. However, the E4500 is a pretty weak processor by today's standards. Any card beyond say... the HD 7770 or GTX 650 would start to become bottle necked by the processor.