Buy Dell OptiPlex 755 Desktop System Motherboard GM819
Upgrading old Dell Optiplex 755 for light gaming - New Builds and Planning - Linus Tech Tips
Amazon.com: DELL Optiplex, Intel Core 2 Duo 2600 MHz, 500Gig Serial ATA HDD, 2048mb Memory, DVD ROM, Windows XP Professional-Power Cord (Renewed)'] : Electronics