Crucial 8GB (2 x 4GB) DDR3 1600 Desktop Memory $45 at Newegg

Newegg has the Crucial Ballistix BL2KIT51264BA160A Sport 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 Desktop Memory for $50 - $5 off with coupon code PAXMEM4 [Exp 9/6] = $45 with free shipping. Features a cas latency of 10 with 10-10-10-28 timing.