The parts cost for the system ran about 20 percent higher than I had anticipated. Here's a list of the approximate costs, which total around $610 (not including sales tax): Motherboard: $130 ( Asus P5Q-EM ) Processor: $75 (2.5GHz Core 2 Duo processor) 2GB RAM: $30 1TB HDD: $130 Slimline optical drive: $30 Enclosure: $190 (Silverstone Lascala LC19) Low-profile CPU fan: $25