2GB PC2-6400 (800Mhz) 240 pin DDR2 DIMM (CCK) at Amazon.com
Nanya NT2GT64U8HD0BY-AD 4GB 2 x 2GB PC2-6400U DDR2 800 NonECC Desktop Memory Kit at Amazon.com
Amazon.com: High Performance Memory Module for RAM for Intel/AMD (2GB, DDR2,800MHz, 200PIN, PC-6400), Compatible with Your Digital Smart Computer/Computer : Electronics
4GB (2X 2GB) DDR2 PC2-6300 PC2-6400 800Mhz 240 Pin DIMM (Desktop Memory) 4 GB KIT (Price Include Tax) at Amazon.com
8GB 2 X 4GB DDR2 PC2-6400 800MHZ 240Pin AMD DIMM Hgih Density Desktop Memory at Amazon.com
4GB DDR2 PC2-6400 800MHz 240Pin Large Capacity Memory Ram for Desktop Computer, Suitable for AMD : Everything Else - Amazon.com