Corsair Vengeance 8GB (2x 4GB) PC3-12800 DDR3 Desktop Memory for $36.99 shipped after promo code EMCJHJJ78. Here is a screenshot for reference. Alternatively, it is available at Amazon for $36.99 shipped. It features 9-9-9-24 latency at 1.5V, heat spreader and Intel XMP support. Most places have this dual channel RAM kit for about $44.