Please Check your BIOS ME version first (Check it here)2012/05/09
If your BIOS ME version is lower than 8.1.X.X. Please find the CPU EVO via http://www.ecs.com.tw/extra/ECS_win8/win8_bios.html to update your BIOS first. After updating this BIOS, you only can flash newer versions afterward.Please DO NOT flash back older version BIOS, it will cause your system to crash.
You just need to enable Turbo Mode(M.I.B III– Performance Tuning – CPU Configuration – Turbo Mode => enabled) to over-clock. However, please understand. About the over-clock of Turbo Mode, the over-clock range is depended on how many CPU cores active.
If the program you run only need to active one core for high loading, the over-clock range will be large.
If the program you run need to active all CPU cores, the over-clock range will be smaller.
You can see detail below from Intel, about i5-2500K ,
when active core is one, the max Turbo Boost Frequency will up to 3.7GHz.
If active cores are 4 cores, the max Turbo Boost Frequency will up to 3.4GHz.
on my side, I used “CINEBENCH” tool to make CPU high loading for single core to check the Turbo mode.
Related models :
P67H2-A (V1.1) P67H2-A2 (V1.0) P67H2-A3 (V1.0) H67H2-A3 (V1.0) H67H2-I (V1.1)
H67H2-M (V1.1) H67H2-M2 (V1.0) H67H2-M3 (V1.0) H67H2-M4 (V1.0)