I have the exact same specs as you OP but you forgot your GPU.
I have a GTX 560 TI. I have two of them but as we all know, the game does not support SLI
I mostly play 1s at medium settings at 1920 X 1200.
The game starts good but at the end when there is a lot of fire and smoke, it falls down to about 10-25 FPS. Not all the time, it depends on how much is going on.
I would tell you to buy a new AMD card because i never saw someone having problems with AMD on COH2.
I like NVIDIA better and i am thinking to upgrade with NVIDIA again but i am hesitating because of all this BS optimization. No one can guarantee me that if i buy a GTX 980 or 970 the game will run smoothly at max setting. Thank you for that RELIC, Great freaking Job
I also play only COH1 and 2. SC never got to me, i don't like the fantasy settings so much. I am old school too