My main gmaing system:
AMD E-350 (Dual core 1.6 ghz)
6gb RAM
ATI Radeon HD 6310 graphics
HD 320 GB (5400 RPM)
Windows 7 64 Professional
Currently, as i said before, i can run Trinity on medium maps with 3-4 AIs and medium graphics without any slowdown problems even in late game... if i can run Rebellion on the same map sizes and maybe low graphics it would be enough for me to buy it... otherwise i will leave it for now...