yeah if you get a Core 2 Duo don't even bother looking at the system requirements for about 5 years.
and the AMD equivilant to 3.0Ghz is the AMD 3200 basically...which should only be around $70. basically, if you get a new computer don't worry about not meeting requirements other than Oblivion and Prey and other really high level games like that.
Antec NeoPower 650W
Intel Core 2 Duo E8400 (w/ Arctic Freezer 7)
4GB DDR2-1000 G.Skill
Sapphire x1950 Pro 512mb (w/ V700)
250GB, 500GB and 1.5TB Seagate Barracudas (2.25TB total)
Fatal1ty XtremeGamer sound card *** generic TV tuner
Xclio 3060 case *** HannsG 22" monitor
XP Pro / Ubuntu 7.10 *** Razer Copperhead and Tarantula