This is what I just put together last weekend. This thing is a beast, 4-boxing SWTOR with full eye candy and this setup breezes right through it. Running a triple monitor setup with the new 7970 running the 27" and a 22" mon and a 6850 from the old comp running the other 22" mon.

1 x ($649.99) Dell UltraSharp U2713HM Black & Silver 27" 8ms (GTG) IPS-Panel HDMI Widescreen LED Monitor 350 cd/m2 DCR 2,000,000:1 (1000:1) $649.99
1 x ($569.99) Intel Core i7-3930K Sandy Bridge-E 3.2GHz (3.8GHz Turbo) LGA 2011 130W Six-Core Desktop Processor BX80619i73930K $569.99
1 x ($399.99) SAPPHIRE 100351SR Radeon HD 7970 3GB 384-bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card OC with Boost $399.99
1 x ($299.99) MSI Big Bang-XPower II LGA 2011 Intel X79 SATA 6Gb/s USB 3.0 XL ATX Intel Motherboard with UEFI BIOS $299.99
1 x ($259.99) Intel 520 Series Cherryville SSDSC2CW240A3K5 2.5" 240GB SATA III MLC Internal Solid State Drive (SSD) $259.99
1 x ($249.99) SeaSonic X-1250 1250W ATX12V / EPS12V SLI Ready 80 PLUS GOLD Certified Full Modular Active PFC Power Supply $249.99
1 x ($229.99) Mushkin Enhanced Redline 32GB (4 x 8GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model 994102 $229.99
1 x ($109.99) CORSAIR Hydro Series H100 (CWCH100) Extreme Performance Liquid CPU Cooler $109.99

Price would be about $2120 without the monitor.