Dell Dimension E521 Desktop, AMD Athlon™ 64 Dual-Core 3800+, 512MB, 160GB, 16x DL DVD±RW/±R/CD-RW $489.00

Go to the product page of this system @ Dell Home Under "Memory" section, change the selection to "512MB Single Channel DDR2 SDRAM at 533MHz - 1DIMM [subtract $55]" Under "Monitors" section, change the selection to "No Monitor [subtract $170]" Under "Warranty and Service" section ("Protect My Investment" tab), change the selection to "1Yr Ltd Warranty, 1Yr At-Home Service, and 1Yr HW Warranty Support [subtract $161]" Check each and every option to make sure you are getting everything that you need (Configuration changes will affect final price) Proceed to checkout Dell Home is offering Free Shipping & Handling on this system Your Final Price: $489.00 + Free Shipping