The BIOS Explored

P55-UD3P Boot Screen



Gigabyte’s Intellligent Tweaker (MIT)



CPU.DDR3 Clock current status



Adjust CPU clock ratio, QPI clock ratio and BCLK



CPU Core Feature
Turbo Boost Tec is auto OC feature in Intel Core i7/i5



DDR3 Setup



DDR3 parameters page
B2B CAS Delay is the P55 exclusive item for DRAM performance
The range is 1~32 and Auto is around 1~3
The higher number means looser. Sometimes, you even see 1xxx MB/s which is lower bandwidth than DDR. However, it’s also the key factor for achieving a high DDR3 clock



Voltage page
Load-Line Calibration Disable will raise CPU voltage as full speed/Enable will lower CPU voltage as full speed
CPU Vcore 0.50000~1.90000V
QPI/Vtt Voltage 1.050~1.990V
PCH Core 0.950~2.000V
CPU PLL 1.600~2.540V
DRAM Voltage 1.300~2.600V



PC Health Status



All above are BIOS screen and also my OC setting for P55-UD3P XPU/DDR3 is 200/200 ratio.
The OC setup may be different as depending on your components combination. Even the same model and period Core i5-750, the OC ability are vary. Users need to find your best voltage setup by your own. Use these settings as a general guideline, but build up voltage and overclock gradually.