Those of you who demand the ultimate in performance may want to look at the aptly named Chillblast Fusion Juggernaut PC which PC Pro magazine describes as record breaking. At £1,549 (inc VAT) it's almost a steal.
2.66GHz Intel Core 2 Quad Q9450 overclocked to 3.4GHz, 4GB 800MHz DDR2 RAM, Asus Rampage Formula Republic of Gamers motherboard, 1GB Nvidia GeForce 9800 GX2 graphics, 750GB Samsung Spinpoint HD753LJ hard disk, Samsung DVD writer, 24in Samsung SyncMaster 245B TFT, Saitek Eclipse II keyboard, Razer DiamondBack mouse, Creative T7900 7.1 speakers, 2 x PCI-E 16x, 2 x PCI-E 1x, 2 x PCI, 8 x USB, 2 x DVI-I, 1 x HDMI, 2 x FireWire, eSATA, Gigabit Ethernet, S/PDIF, PS/2, Windows Vista Home Premium 32-bit, 2yr RTB warranty.
Even with its massively overclocked quad-core processor, the box runs cool so there is potential to overclock it further. OK there are better speakers out here and the Dell 2408WFP monitor offers more than the Samsung but you can be too picky.
The 32bit version of Vista can only address 4Gbs of RAM there is little point in upgrading the memory. In any case, the graphics card takes up 1Gb of the allocation, so only 3Gbs of the existing RAM are useable.
For those of you who play Crysis, this is a must. Even at 1,920 x 1,200 pixels this beast still manages 31 frames per second.