I just picked up an E5200 bundle from Fry's for $99. The E5200 is a 45nm processor that has low power consumption and pretty good horsepower compared to the Core2 E7300 (See review here). This goes nicely with the $85 1.5TB Seagate Drive I scored last month, the 2GB of of memory for $7 and the $3 Airlink gigabit NIC. I have a $19 MicroATX case, a spare $19 Seagate 200GB IDE drive for the boot drive (Staples Black Friday deal several years ago), and a spare $6 Antec 120mm Tricool fan. It will be running a free copy of Server 2003 courtesy of Microsoft DreamSpark and my wife who's taking a night class which qualifies her to get some free MS software. I just need an 80Plus power supply. I have a regular spare that I can use to get the system set up, but for the long-term, I'm going to find an high-efficiency power supply for this. Total cost so far is about $250 with the power supply left to buy.