 "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 Value Memory 4GB DDR3 1333 Mhz CAS 9 Dual Channel Desktop"@en Desktop LN32202 - CMV4GX3M2A1333C9 | SCAN UK"@en
"4GB (2x2GB) Corsair DDR3 Value PC3-10666 (1333) Non-ECC Unbuffered, CAS 9-9-9-24, 1.50V                                  "@en 
 Specifications Size 4GB (2x2GB) Memory Model Value Select Max. Memory Channels Provided by Kit Dual (2) Memory Type DDR3 Memory Type (ECC) Non-ECC Memory Type (R/U) UDIMM (Unbuffered) Memory Speed PC3-10666 (1333) Pins 240 CAS Latency 9-9-9-24 Voltage 1.5 V Validated Compatible with   Cooler   Features  