I have an ASUS P5K-E MOBO. I have 4 gigs ddr2-800 ram. E8400 dual core cpu. I currently have a NVIDIA 9800 GTX 512 mb vid card. Now, I am going to upgrade the card to a ATI 5850. Since my PCI-E is x16. Will it work? And will I take a performance hit with that card since I think the newer MOBO's have a faster PCI-E slot? Thnaks for the help.