Corsair CMX4GX3M2A1600C9 XMS3 4GB (2 x 2GB) DDR3 SDRAM Memory - £22.71 At Amazon

Corsair’s mainstream memory solution for Intel’s new Core i5 and Core i7 dual channel DDR3 processors. The XMS3 family is Corsair’s mainstream line of performance DDR3 memory. These modules allow users to experience outstanding memory performance and stability. Available in Corsair’s new XMS heat spreaders, each module is built using carefully selected RAMs.

This 4GB twin kit memory solution has been designed specifically to support the Intel Core i5 and Core i7 dual channel memory DDR3 solutions. This solution runs at an incredibly fast 1600MHz at CAS latency of 9-9-9-24. So not only do you get to run your Intel Core i5 or Core i7 dual channel memory system at 1600MHz but with these tight Latency timings your system performance will rock.