Re 'noisy' servers - I'm using an HP XW6000 Dual Core Xeon 3.2GHz 147GB 4GB Workstation as a desktop computer and most of the time it's inaudible. There's the occasional rattle when initially selecting an intensive programme but it passes in next to no time.
Cost less than £200.00 on Ebay, upgraded the graphics and never had a problem with it in seven months since purchase.