When I bought my GeForce FX5600 card in 2003, it seemed that the AGP bus was the way to go.Since then, I have replaced my mobo with an ASUS P4P800-E Deluxe, but I now want to upgrade my graphics card for a better FSX experience.I have heard that PCI Express is a better bus than AGP. OK, but does PCI Express require a special slot on the mobo? Does my ASUS P4P800-E Deluxe support a PCI Express graphics card, or am I stuck with the AGP bus?I have tried to find the answer in the ASUS manual, on the ASUS Forum and on this Forum, to no avail.- Jeff

Your motherboard is AGP only. It will not accept any PCIe video card.Greg

Hi Jeff!I, too, have a P4P800 MB. It's a great board, overclocks very well and is quite stable. But alas, you are stuck with the AGP slot and no PCI express slot for graphics.I'm afraid the only way around this is a new MB. However, that will likely also mean a different processor as the P4P800 is a slot 478 board. Of course, you may also need to replace ram as well as I don't think the ram you have on your board, DDR SDRAM, is compatable with the more contemporary boards that work with DDR2.I have the same issue and not a fat wallet to go with such an upgrade right now. But the day is coming!Ed Lin, D.O.S.

Don't dismiss AGP too fast. I'm getting great results with my Gigabyte 8IEPE800 MB, P4 2.4 overclocked to 2.7 (easy overclock, just increased FSB to 150 instead of 133), 500 MB ram, Soundblaster Augigy2 ZS. THE KEY was a Palit ATI800GTO AGB video card. Now great looking scenery in the FSX demo and the planes look fantastic. Framerates not too bad 15-25 in general.I am building another AGP based system this will be Athlon643500+, 2gig ram, the same ATI videocard.Check out my screenshot.Cheers, Don