Corsair Vengeance Blue 8GB (2x 4GB) PC3-15000 1866MHz DDR3 Memory Kit for and Dual Channel Processors at Amazon.com
CMS 8GB (2X4GB) DDR3 12800 1600MHz Non ECC DIMM Memory Ram Upgrade Compatible with Lenovo® ThinkCentre M79 SFF/Tower - A74 at Amazon.com
8GB [2x4GB] DDR3-1066 (PC3-8500) ECC RAM Memory Upgrade Kit for The Apple Mac Pro Quad-Core 2.66GHz 1TB 2.66GHz 1024GB (Z0G1-2.66-8GB-1TB) (Genuine A-Tech Brand) at Amazon.com