FX 8350 5GHz under heavy load,its not that hard on air

[informal]

Dave are you sure you measured 90W drop in OCed scenario? That's massive difference. I hope you will hit your 5Ghz but efficiency will go down the toilet since you will need to push Vcore higher and power draw will go up noticeably. 4.78Ghz is just 4% lower than 5Ghz,I guess it's the nice round number people are after rather than performance improvement (not saying you won't notice 4% ).

PS In this Russian review you can check out 4.7Ghz on PD and BD and the difference PD brought. Maybe even verify their results now that you have the chip at the same clock . In some cases there is massive perf. difference,so much that 4.7Ghz BD is just on par with stock 4Ghz Vishera.