I think some people don't have a gaming computer because they cost a lot, but if you want to play new games on pc and you still can play new games until 2015, so your pc is futureproof.
CPU: Intel Core i7-3930K 3.2GHz 6-Core Processor: $569.99
CPU Cooler: Corsair H80 92.0 CFM Liquid CPU Cooler: $89.99
Motherboard: Asus Sabertooth X79 ATX LGA2011 Motherboard: $314.99
Memory: Corsair Vengeance 16GB (4 x 4GB) DDR3-1600 Memory: $75.99
Storage: Western Digital Caviar Black 2TB 3.5" 7200RPM Internal Hard Drive: $159.99
Intel 520 Series Cherryville 180GB 2.5" Solid State Disk: $189.99
Video Card: 2x EVGA GeForce GTX 680 2GB Video Card: $939.98
Case: Cooler Master Storm Stryker (White) ATX Full Tower Case: $159.04
Power Supply: Cooler Master Silent Pro Gold 1200W 80 PLUS Gold Certified Power Supply: $222.99
Optical Drive: Asus BW-12B1ST/BLK/G/AS Blu-Ray/DVD/CD Writer: $82.50
Total Price: $2805.45
CPU: Intel Core i7-3930K 3.2GHz 6-Core Processor: $569.99
CPU Cooler: Corsair H80 92.0 CFM Liquid CPU Cooler: $89.99
Motherboard: Asus Sabertooth X79 ATX LGA2011 Motherboard: $314.99
Memory: Corsair Vengeance 16GB (4 x 4GB) DDR3-1600 Memory: $75.99
Storage: Western Digital Caviar Black 2TB 3.5" 7200RPM Internal Hard Drive: $159.99
Intel 520 Series Cherryville 180GB 2.5" Solid State Disk: $189.99
Video Card: 2x EVGA GeForce GTX 680 2GB Video Card: $939.98
Case: Cooler Master Storm Stryker (White) ATX Full Tower Case: $159.04
Power Supply: Cooler Master Silent Pro Gold 1200W 80 PLUS Gold Certified Power Supply: $222.99
Optical Drive: Asus BW-12B1ST/BLK/G/AS Blu-Ray/DVD/CD Writer: $82.50
Total Price: $2805.45