I've just build new rig, Gigabyte GA-MA785GT-UD3H, AMD AthlonIIX2 550 BE, G-Skill F3-12800 CL9D-2GBNQ, MSI 5750 PM2D1G. I think I just success to unlock this to X4 B50, the problem is, when it's still in x2 the cpu temperature from hw monitor is show 51 celcius.The same temperature show the same when I unlock it to X4. The stock cooler run in 5000rpm. Is it normal, anyone give me the solution please..