Overclocking the P5N32-SLI is straightforward; under the Advanced Options check into the CPU Configuration and turn off the AI Overclocking, which is Asus' built-in method of raising the speeds, by changing the setting to "Manual". This allows the user to choose from a new menu called Performance Options. It's on this screen that the most tinkering will be done. Curiously, instead of entering in the CPU Clockspeed, as it appears to suggest that you should, the FSB Clock is entered. For example, to manually enter the stock speed of the Pentium 4 550 CPU, you would enter in 800MHz (200MHz x 4). It's a little too abstract, in our opinion, and could throw some users off as they are typically used to a range of 200-450MHz instead of 800-2000MHz. If the clock mode is left as linked, the new memory speed will be displayed above the CPU speed, or this can be set to Manual which allows the user to manually enter both speeds, independent of each other. Memory timings can also be set on this page, depending on whether or not the user wants to manually enter the timings or simply leave them to be determined by SPD. Finally, the PCI-E frequency can be manually set to prevent the graphics card PCIe links from running too far out of specifications. Running this too far off of expected speeds can easily disrupt the operation of most motherboards, so it's best to leave it at 100MHz.
