HP FV862UC#ABA

The xw6600 puts up to two Xeon processors in a slimline case. This is great if you're short of space under or on top of your desk – but next to its rivals here (or, indeed, its xw8600 big brother), it's a little short on storage.

Speed Demon, Part 8... It's fast, but whether its speed is something you need now or can wait for is between you and your pocketbook.