The Asus P6X58D-E, as nearly all Asus motherboards, uses the American Megatrends BIOS, a tabbed BIOS for easy navigation. The BIOS opens to the Main menu, which contains date/time, drives detected by the system, and a couple of submenus, including the System Information submenu.
The System Information submenu contains BIOS version information, the most basic CPU information, and amount of memory detected by the system.
The AI Tweaker menu is where all overclocking functions will be performed. All relevant OC settings are in the main menu excepting memory timings, which is the way it should be. This menu also has some of the CPU settings including SpeedStep and TurboBoost.
The Advanced menu contains submenus with settings the various motherboard subsystems.
The CPU Configuration menu contains the remainder of the CPU settings along with all of the CPU information.
The Onboard Devices Configuration menu enables/disables various internal motherboard ports.
The Power menu contains power related settings and the Hardware Monitor.
The Boot Settings menu contains the relevant boot submenus, including the Boot Settings Configuration submenu where the BIOS splash screen can be disabled.