002

HP Blackbird 002 is probably the best, most high-end gaming system in the market right now. If I were to switch back to PC, this would be my choice computer. It's easily expandable, It's got liquid cooling, It's got 3 PCI-x16 slot compatible with ATi Crossfire AS WELL AS NVidia SLi, It's got VooDoo custom BIOS to make overclocking much simpler, 5 S-ATA slots RAID-configurable.

results from PCMag's test:
"The Blackbird is a gaming system, and in this arena it excels. The system's scores, such as its 115 frames per second on Prey and 92 fps on Company of Heroes at 2,560-by-1,600 resolution, show that it won't stutter when you're playing, even if you're using a huge 30-inch LCD panel. In fact, these are among the fastest scores I've seen so far. (Remember, 60 fps is "enough" for a smooth gaming experience on Prey, and 30 fps is considered "good" for Company of Heroes.)"

Just a warning: It's not available in Singapore (yet), it's S$7,897.61 or $5400, and it's heavy. Did I mention it's HUGE?