Komputerbay 16GB (4 X 4GB) DDR3 DIMM (240 pin) 1333Mhz PC3 10600 / PC3 10666 (9-9-9-25) 16 GB KIT with Heatspreader for Extra Cooling at Amazon.com
MemoryMasters 32GB KIT 4x8GB Single Rank (1RX4) 1333MHz DDR3 PC3-10600 ECC Registered CL9 240-Pin R-DIMM Reg Server Memory - Not for Desktop or laptops at Amazon.com