Ok, will make new thread since i have really, really big performance boost with this build. Couple months ago RF2 was unplayable for me. Drivers 14.6 from ATI made it playable at mid settings with 15 visible AI (19 overall). With this build i can play max out at 1080p, AAx1+FXAA and AFx8. Its around 40-50 fps with no rain and 30-40 with rain. I will lower setting a bit probably to get better fps but the fact is its first time playable maxed out for me. Dont know whats the reason since i have only 4GB of RAM. Maybe its better utilising my amd six cores cpu.
The way this new build handles memory has also been enhanced. I think that's how you got the performance increase.