Here's my old rig(too bad that it died :S)
Windows 7 Ultimate x64
Gigabyte 990FXA-UD3
AMD FX-8350 overclocked to 4.6GHz
EVGA Geforce GTX670 2GB GDDR5(had a HD6990 but it died too :S)
Corsair H60 Liquid Cooler(had a custom water cooling in it, but i had to remove it because it was annoying and the pump and maybe some other things broke :/)
120GB OCZ Vertex 2 SSD, 500GB Seagate Barracuda(Steam Games), 1TB WD Caviar Green(for other Games&Downloads), 2TB Seagate Barracuda Sata III(for other games, apps and downloads, like the 1TB drive)
Aerocool XPredator Evil Black Case
32GB G.Skill Sniper DDR3-1866 memory
Acer S243HLABMii 24", Samsung SyncMaster P2450H&Medion 19" 4:3 displays
My Laptop(which i'm using right now until i have enough time to fix my PC):
Windows 7 Ultimate x64(had Windows 8 x64 on it, but it slowed down my laptop in almost every game)
MSI GE60-i760M245FD
i7-3630QM 2.40GHz(up to 3.40GHz in turbo mode)
MSI Nvidia Geforce GTX660M 2GB GDDR5
500GB HDD
8GB Kingston DDR3-1600 laptop memory(soon 16GB)
15,6" 1920x1080 Non-Glare Display