Ok, just for interests sake, and because work is boring today

, I priced out something at Dell:
XPS 700 Intel® Core?2 Extreme processor x6800 (2.93GHz)
Operating System Genuine Windows® XP Media Center 2005 Edition
Memory 4GB Dual Channel DDR2 SDRAM at 667MHz - 4 DIMMs
Keyboard LOGITECH G15 Gaming Keyboard (ships separately)
Video Cards Dual 512MB nVidia GeForce 7900 GTX
Hard Drive 1TB Performance RAID 0 (2 x 500GB SATA 3Gb/s 7200 RPM HDDs)
Mouse RAZER Diamondback Salamander Gaming Mouse with eXactMat (ships separately)
Optical Drive Dual Drives: 16x DVD-ROM Drive + 16x DVD+/-RW w/ dbl layer write capable
Sound Cards Sound Blaster® X-Fi? XtremeMusic (D), w/Dolby® Digital 5.1
Speakers Dell AS501 10W Flat Panel Attached Spkrs for UltraSharp? Flat Panels
Physics Accelerator AGEIA® PhysX® physics accelerator
Dell UltraSharp Widescreen 3007WFP Qty 1
TOTAL:$7,048.00
So the extra stuff you get for $6,600 less: SLI'ed 7900GTXes, double the RAM, a PPU, double the storage and a beautiful 30" monitor, all with complete care warranty for 3 years...WOW!