Kingston HyperX Blu 8GB 1600MHz DDR3 PC3 12800 RAM $40 at Rakuten.com Shopping

Buy.com has the Kingston KHX1600C9D3B1K2/8GX HyperX Blu 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600MHz (PC3 12800) Non-ECC CL9 DIMM XMP Desktop Memory for $55 - $15 rebate [Exp 10/9] = $40 with free shipping. Features latency timing of 9-9-9-27 at 1.65V, Intel XMP-Certified, and clipless design.