CMS 8GB (2X4GB) DDR2 6400 800MHZ Non ECC DIMM Memory Ram Upgrade Compatible with Asus/Asmobile® P5 Motherboard P5Q, P5Q Deluxe, P5Q Plus - C4 at Amazon.com
Asus P5Q Deluxe Motherboard - Intel P45, Socket 775, ATX, Audio, PCI Express 2.0, CrossFireX Ready, Dual Gigabit LAN, S/PDIF, Firewire, USB 2.0, eSATA, RAID at TigerDirect.com
8GB KIT (4 x 2GB) for ASUS ASmobile Motherboard P5NT WS P5N-VM P5Q Deluxe Premium PRO Turbo SE Plus SE/R. DIMM DDR2 Non-ECC PC2-6400 800MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com
Asus P5Q Deluxe Review & Overclocking - Introduction