Asus P5K Motherboard, As far as I know, they are DDR3s. Or twos.
Well, I would like to push it to a safe limit, to get the highest performance with this. Fighting with a slideshow-effect is meh.
Edit: I found a guide on the web, I OC-d to 2,7 GHZ, the game is very SMOOTH, I mean.. SMOOTH.
Only problem is that my CPU is a bit hot with this setting. But the OC-ing works really.
Maybe I'll tone it down to 2,6, or 2,5 GHZ.
By the way, An idle 50 temp. is alright? If yes, I'll use 2,6, works very well.