CMS 8GB (2X4GB) DDR2 5300 667MHZ ECC Registered DIMM Memory Ram Upgrade Compatible with Supermicro® X7Dcx, X7Dcu Motherboard for Server Only - B49 at Amazon.com
parts-quick 16GB (2 X 8GB) DDR2 PC2-5300F 667MHz CL5 ECC Memory Server Motherboard FB DIMM at Amazon.com
A-Tech 8GB KIT (2 x 4GB) for Asus M4 Motherboard Series M4A78-EM/1394, M4A78-HTPC, M4A78-HTPC/RC DIMM DDR2 ECC Unbuffered PC2-5300 667MHz Server RAM Memory at Amazon.com
Supermicro X7DCL-I Dual LGA 771 ATX Server Motherboard w Xeon E5335 2GB DDR2 ECC | eBay
4GB Kit 2 x 2GB Memory for ASUS/ASmobile NC Motherboard NCT-DA DDR2-400 PC2-3200 ECC RDIMM (PARTS-QUICK Brand) at Amazon.com