i have cheked the motherboard, place and power.
but when i am using: Can you run it (http://www.systemrequirementslab.com/cyri/.) it says that my CPU is to low to play bfbc2 and black ops.
do you know if that is true, or is the netside wrong?
I just got my MSI 6950 (xfx all sold out on the egg =/) and it flashed flawlessly. Furmark/Crysis2 stable . I now have a 6970 with less power usage than a traditional 6970, and temps are still lower than my old 4890s. *flex
That reminds me... time to change my config.
If you do go this route, make sure you buy the reference version (original AMD cooler).
i am also buying a new cabinet with 500 W PSU.
i have talked to some people and they say that 500 is enough
Careful; many PSUs that come with a case (Antec is a notable exception) are overrated junk that can't produce anywhere near 500W.
A quality modern PSU has full range active PFC (no little voltage switch) and 80+ certification for efficiency. Antec, Seasonic, Corsair, Enermax, and XFX are among the better brands.
Logisys, which Newegg has been shamefully including in a lot of their combos lately, is among the worst.
Yes, that is indeed one of the "notable exceptions" from Antec.
You'll like that case too, unless you overclock a lot. Cooling isn't great for overclocking (you'd want to add a front fan), but it is solid, well-built, and very quiet.
Edit: Don't worry, you don't need to add another fan if you either won't OC or only do mild increases.