I have :
Intel PIV 2.66 @ 3.2 Ghz
P4C800 Deluxe
4 Gb Ram 333
GF FX 5900 Ultra MSI
Samsung 17"
I Believe i should be able to run Doom 3 & Half Life 2 the smoother way
But anyway im regarding to buy a 3.0 fsb 800 with HT.
IMO the P4C800 is the best investment you could ever make, notice my OC from 2.6 to 3.2 (I can manage to get 3.4 Ghz, but without all the tweaking's that the motherboard BIOS as to offer. memory timings 2.5;2;2;5 nice i believe :] )