ESXi Host Power Management

I have just listened to Qasim Ali's  VMworld session "INF8465 - Extreme Performance Series: Power Management's Impact on Performance" about ESXi Host Power Management (P-States, C-States, TurboMode and more) and here are his general recommendations

• Configure BIOS to allow ESXi host the most flexibility in using power management features offered by the hardware
• Select "OS Control mode", "Performace per Watt", or equivalent 
• Enable everything P-States, C-States and Turbo mode
• To achieve the best performance per watt for most workloads, leave the power policy at default which is "Balanced"
• For applications that require maximum performance, switch to "High Performance" from within ESXi host

Ali's VMworld session linked above is really worth to watch. I encourage you to watch it by yourself.