The server I bought on eBay for $360 arrived last night. Dual 1.4G Xeon, 2 gigs RAM and 290 gigs RAID disks. Very nice!
It's kinda reminiscent of a jet engine, though. I think I'll have to work out some kind of rack unit with baffles or something, to not restrict airflow but deaden the noise somewhat. It's going in a spare corner of the house anyway, but I still don't want quite that much noise around the house.