hello. i currently have a 3500+ 2.2 processor, MSI SLI motherboard with Radeon xpress 200 chipset, 1 gb of 2-channel kingston ram, and an x800xl 512mb card. i am thinking of upgrading to a 7800gt, but i am wondering if it is worth it. will the 7800gt hit against the cpu's speed, where i wouldnt be getting any more performance? thanks