I've recently (November 2009) built a new PC to take advantage of VSL MIR of which the specs are;

ASUS P6T6 WS Revolution motherboard

Intel Core i7 Extreme 8 core 3.33 ghz Socket 1366

12 GB Corsair DDR3 RAM

Gigabyte GTS250 1GB GDDR3 graphics Card

Maudio 2496 sound card

Samsung SM2693HM 26" monitor