 "Corsair XMS3 - DDR3 4 GB: 2 x GB DIMM 240-pin" " Corsair 240-pin TW3X4G1333C9A System Memory (RAM) CDW.com
"The XMS3 family is Corsair's mainstream line of performance DDR3 memory. These modules allow users to experience outstanding memory performance and stability." 
 "Corsair XMS3 8GB (2x4GB) DDR3 PC3-12800 1600MHz Dual Channel Kit "@en 2x4GB | CMX8GX3M2A1600C9 Novatech"@en
"1600MHz RAM Speed, CAS 9-9-9-24, 1.50-1.65v VDIMM, XMP, Lifetime Warranty"@en 
 Memory Type DDR3 (PC3-12800) Capacity 8GB (2 x 4GB) Tested Speed 1600MHz Tested Latency 9-9-9-24 Tested Voltage 1.50-1.65v Registered / Unbuffered Unbuffered Error Checking Non-ECC Memory Features XMP, XMS3 Heatsink