The ASUS M2A-VM uses a Phoenix Award BIOS that is modified for ASUS users with their own settings to give control of the board to the end-user. The key features of the BIOS regarding overclocking can be found in the Advanced menu with JumperFree, Chipset and DRAM Configuration areas where you adjust the primary items for the motherboard.
Advanced JumperFree Configuration menu has the following submenus: DDR2 voltage control (up to 2.1V), CPU voltage control (up 100mV above default), CPU multiplier 5x-13x. CPU Voltage allows higher voltage than normal and CPU Frequency allows you to change the HT Link reference clock which also controls the CPU FSB the Memory frequency and the the HT Link clock speed.
The 5000+ CPU that we use for motherboard testing is rather limited overclocking wise, as the clock speed is 2.6 GHz, the fastest available CPU until the release of the 6000+ (3GHz) early this month. Nonetheless I was able to overclock the ASUS M2A-VM board to an even 3 GHz using straight overclocking and was able to reach a FSB of 260MHz with lowering the multiplier.
