XSp.

Check this dream come true setup the guys at Samsung built:

Unfortunately, the speed on this beast is inversely proportional to the time you’d have to work to earn money to buy something like that…
Here’s the setup:
24 256GB Samsung MLC SSD in RAID
2 Quad Core QX9775 Processors
2 ATI Radeon HD 4870 X2 in Crossfire
1 4Gb Custom 800Mhz FBDIMM Ram
2 1000W Power Supplies

Yep.. that’s a lot.
Source: Gizmodo