The ASUS P9D WS comes supplied with ASUS AI Suite 3, which allows you to control various system settings from the desktop.
Here we see the main screen for CPU settings, which shows frequency, voltage, temperature, and fan speeds, and allows you to change different aspects of the CPU.
Here is the DRAM control page.
Here is the EPU screen, where you can change power saving features.
Here we see the High Performance tab for EPU settings.
Next is the Max Power Saving tab.
The last tab for the EPU section is the Away Mode screen.
The last screen for the AI Suite 3 is Fan Xpert 2, which allows you to change the fan modes.