MSI Big Bang XPower Motherboard

Overclocking Options (Cont’d)

The main overclocking options we could see on Big Bang XPower (2.2 BIOS) were:

• CPU base clock: can be adjusted from 100 MHz to 600 MHz in 1 MHz increments.
• PCI Express clock: can be adjusted from 100 MHz to 990 MHz in 1 MHz increments.
• CPU Amplitude control: 700 mV to 1 V in 100 mV increments.
• PCI Express Amplitude Control: 700 mV to 1 V in 100 mV increments.
• CPU voltage: From 0.900 V to 1.69375 V (with CPU overvoltage switch off) or to 2.30375 V (with CPU overvoltage switch on) in 0.006 V increments.
• CPU VTT voltage (“CPU QPI Voltage”): From 0.880 V to 1.600 V (with QPI overvoltage switch off) or to 1.830 V (with QPI overvoltage switch on) in 0.01 V increments.
• CPU PLL voltage: From 1.050 V to 2.600 V in 0.010 V increments.
• Memory voltage: From 1.20 V to 2.20 V (with DRAM overvoltage switch off) or to 2.50 V (with DRAM overvoltage switch on) in 0.01 V increments.
• North bridge (IOH) voltage: From 0.800 V to 1.500 V (with IOH overvoltage switch off) or to 1.700 V (with IOH overvoltage switch on) in 0.01 V increments.
• South bridge (ICH) voltage: From 1.100 V to 2.000 V in 0.01 V increments.
• North bridge (IOH) PCI Express lanes: From 1.108 V to 1.998 V in 0.01 V increments.
• Memory data reference voltage: From 0.511 V to 1.053 V in 0.19 V increments (for each memory module).

Memory timings can also be tweaked.

One advice: MSI calls the CPU VTT voltage, which is used to feed the QPI bus controller, the memory controller and the L3 memory cache inside the CPU as “QPI voltage.” We always wonder why motherboard manufacturers can’t simply use the official names to avoid misunderstandings. For a better explanation of the voltage options presented above, please read our tutorial on the subject.

Figure 15: Overclocking menu.

Figure 16: Overclocking menu (Cont’d).

Figure 17: Overclocking menu (Cont’d).