Hi! I'm with 990FXA-UD5 mobo and bios F12a and AMD FX 8350 CPU. And in bios i have core performance boost and CPB ratio, but i dont have turbo option... when i disable CPB CPU works around 4028 mhz and when CPB is working (on auto) it goes to 4127mhz on 20.5x auto multiplier .. Why it does not work on 4200 mhz and is core performance boost = to turbo core? is it normal with GB 990FXA series mobos and FX 8350 turbo core to be missing or on FX series it is CPB not turbo core? or turbo core is option available on phenoms only? could it be problem with my PC?
Edit: this is my bios:
And this is pic from mobo manual with turbo option:
