This build allows you to add another one of those 6950's later on.
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Rosewill CHALLENGER Black Gaming ATX Mid Tower Computer Case, comes with Three Fans-1x Front Blue LED 120mm Fan, 1x Top 140mm Fan, 1x Rear 120mm Fan, option Fans-2x Side 120mm Fan
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.624829 Combo Discount: -$10.00 Combo Price: $174.98 $15.00 Mail-In Rebate Card Price After Mail-In Rebate(s): $159.98
CORSAIR Enthusiast Series TX750 V2 750W ATX12V v2.31/ EPS12V v2.92 80 PLUS BRONZE Certified Active PFC High Performance Power ...
SAMSUNG Spinpoint F3 HD103SJ 1TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive