The BIOSThere's enough voltage regulation to keep all but the most zany of users happy. CPU and memory voltages are the maximum permissible when the onboard overvoltage jumper is in the correct position (pins 2-3). You can reduce the CPU's to 1.7V and the DRAM's to 2.0V in standard mode, which is more than enough to fry your chip and memory.
Memory speeds, in particular, are hugely variable, topping out at an impressive 2,400MHz when tied to a 133MHz base clock. In short, only the crazy overclocker will feel short-changed by the P6X58D-E's BIOS.
ASUS provides more than enough options to keep users sated. Gone are the days of a ridiculous number of parameters that only served to confuse the novice user. Rather, the P6X58D-E BIOS is much like the board: decent.