EVGA P55 LE offers some good overclocking options under a menu called “Frequency/Voltage Control.” You have even the option to save up to four different configuration profiles for quickly recovering a different configuration set. The main options we could see with the initial BIOS release (08.00.16, 08/28/2009) were:

• Dummy O.C.: Automatically configures a basic overclocking for you.
• CPU base clock: can be adjusted from 133 MHz to 300 MHz in 1 MHz increments.
• PCI Express clock: can be adjusted from 100 MHz to 200 MHz in 1 MHz increments.
• CPU voltage: From 1.0 V to 2.3 V in 0.00625 V increments.
• CPU termination voltage (VTT): From 1.050 V to 2 V in 0.025 V increments.
• CPU clock generator (PLL) voltage: From 1.050 V to 2.4 V in 0.025 V increments.
• Memory voltage: From 1.20 V to 1.50 V in 0.05 V increments then from 1.50 V to 2.60 V in 0.1 V increments.
• Chipset (PCH) voltage: From 1.050 V to 2.625 V in 0.025 V increments.

Memory timings can also be tweaked.

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Figure 11: Overclocking menu.

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Figure 12: Overclocking menu (cont’d).

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Figure 13: Memory timing options.