8GB (1x8GB) DDR3-1600MHz PC3-12800 Non-ECC UDIMM 2Rx8 Desktop Memory Module by NEMIX RAM at Amazon.com
Global Memory 8GB (2 x 4GB) DDR3 800/1066/1333/1600/1866MHz 240-PIN ECC DIMM (UDIMM) Memory Ram Kit for Servers/Workstations/Motherboards at Amazon .com