ASRock Z77 OC Formula Motherboard

Overclocking Options

The ASRock Z77 OC Formula provides several additional features for the overclocking enthusiast.

Through the voltage monitoring points available (“V-Probe”), you can monitor the following voltages using a voltmeter:

• CPU core voltage (“VCORE”)
• CPU VTT voltage (“VTT1” and “VTT2”)
• CPU VSA voltage (“VCCSA”)
• CPU PLL voltage (“1.8V_PLL”)
• Internal clock generator compensation voltage (“XCLK_RCOMP”)
• Chipset voltages (“PCH” and “PCH2”)
• Memory (“VCCM”)
• Chipset DMI interface voltage (“DMI”)
• Chipset DMI compensation voltage (“DMI_COMP”)

Figure 15: Voltage monitoring points

The motherboard also has a “+” and a “-” button for you to manually increase or decrease the CPU base cloc
k. See Figure 15.

Below, we list the most important overclocking options available at the motherboard’s setup (1.20 BIOS):

• Base clock: From 95 MHz to 150 MHz in 0.1 MHz increments
• CPU core voltage: From 0.600 V to 1.700 V in 0.005 V increments
• Integrated graphics processor (“IGPU”, VAXG) voltage: From 0.600 V to 1.520 V in 0.005 V increments
• Memory controller (“System Agent,” VCCSA) voltage: From 0.928 V to 1.567 V in 0.005 V increments
• CPU VTT (“I/O”) voltage: From 0.768 V to 1.634 V in 0.009 V increments
• CPU PLL voltage: From 1.500 V to 2.900 V in 0.013 V increments
• Internal clock generator compensation voltage (“XCLK RCOMP”): From 0.803 V to 1.654 V in 0.013 V increments
• Chipset (PCH) voltage: From 0.803 V to 1.654 V in 0.013 V increments
• Chipset DMI voltage: From 0.803 V to 1.654 V in 0.013 V increments
• Chipset DMI compensation strength: From -10 to +17 in +1 increments
• Memory voltage: From 1.165 V to 2.100 V in 0.005 V increments
• Memory termination voltage: From 0.600 V to 0.904 V in 0.005 V increments

Figure 16: Overclocking options

Figure 17: Overclocking options

Figure 18: Overclocking options