If you're thinking of a new PC, you'll probably want one with a motherboard based on the i875P chipset. It supports Dual DDR 400 (6.4 GB/s) which is the fastest memory support you can have at the moment - synchronous with a 3 Ghz P4! Here's an
architecture picture. Other goodies: AGP 8x, 2 Serial ATA controllers + RAID, 8 USB 2.0 ports, 200Mhz FSB. Bit concerning that some motherboards need to use active cooling on the south bridge - more noise. I'd like to see this chipset done on a
Shuttle PC.