AMD X2, or 4000, or 3700 san diego, or FX series
Corsair, Geil, Mushkin, Kingston, Crucial 1gig dual channel ram, or 2 gigs dual channel ram
7800 GT or 7800 GTX, X1800 XL (You can buy one card now run it in 16x slot, and get another one later for SLI/crossfire sweetness!)
Abit Guru SLI Board, DFI SLI, Jetway SLI, ASUS SLI, Gigabyte SLI, Soltek, or wait for crossfire!! It even says it on the new ATI Boxes!!!
X-Fi Xtreme Music Edition, or X-Fi Platinum, or Audigy 2 Platinum/gamer
new 16MB Cache hard drive insane gaming burst speeds