thebobby1979 :
Core i5 2500k. And i got another question to is it a good idea to let msi OC do the overclocking or i do it manually in the bios?
manually in the BIOS....!
What do you mean by optimized on the phase control?
with a 2500K @ 4.3-4.5GHz should be easy.
you can actually run an auto volt like I stated at the desired speed.
check you voltage and temps with CPU-Z and HWMonitor.
adjust your Phase Control to Optimized and your LLC to Regular
disable Spectrum's (Spread and VRM) and go for it.