I can play from 2 to 5-10min suddenly i got a error... you do not have enough memory
My system is
Asrock Z68 Extreme4 Gen3
CPU: Intel i5 2500K
Ram 2x4GB G.Skill RipjawsX DDR3-1600 C9 DC 8GB total
GFX: ASUS GeForce GTX 780 3GB PhysX CUDA
System Disk: Samsung SSD 840 EVO 250GB
Gamer Disk: OCZ vertex 4 256gb SSD
All on Windows 7 64BIT