parts-quick 16GB DDR3 Memory for Dell PowerEdge R620 PC3-10600 ECC Registered Low Voltage DIMM 240 pin 1333MHz RAM at Amazon.com
G.Skill Ripjaws X Series 16 GB (2 x 8 GB) 240-Pin SDRAM (PC3-12800) DDR3 1600 CL10-10-10-30 1.50V Dual Channel Desktop Memory Model F3-12800CL10D-16GBXL at Amazon.com