HP FV862UC#ABA

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.

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.