I'm building a gaming PC with a budget of approximately $1500 US (not including an operating system and monitor- already have them). Could those knowleadgeable about building such machines offer criticism on the following proposed setup? Case: Cooler Master HAF-X ATX Full HD: 2x WD Caviar Black 750 GB NIC: Bigfoot Killer 2100 Video card: XFX HD695XZDDC Radeon HD 6950 Power Supply: Antec CP-850 850W Continuous Power Memory: CORSAIR Vengeance 16GB (4 x 4GB) 240-Pin DDR3 Motherboard: ASUS P8Z68-V LE LGA 1155 Intel Z68 CPU: Core i7-2600k Sandy Bridge 3.4 GHz w/ Turboboost CPU Heatsink: ARCTIC COOLING Freezer 7 Pro Media: LG Black Super Multi SATA BluRay This comes out to $1473.89 . I haven't done this in a while and haven't kept up to speed on graphics cards and desktop CPUs especially, so if anyone has suggestions on alternative components or improvements while remaining reasonably within budget, lets hear them. This machine will be used for checking e-mail, Facebook (Farmville ofc), and listening to music on iTunes.