I could get 4.5 Ghz just with 1.4000 voltage. and 100% stable. Temps diodn't rise 62ºC at full load.
- 210 on the CPU bus speed
- 21.5 on the Multilpier.
- 1,4000 vcore
- Turboboost off
- Cooln'Quiet off
Now i'm not at home, tomorrow i'll send u more bios info so you can adjust everithing.
I have Raijintek Themis Evo, quite similar to CM 212EVO (air cooling) so you can handle more voltage without overheat.