Have you enabled the Turbo Button on your ESX hosts?

If you haven’t checked the Power Management settings on your ESX hosts lately, you might be surprised to find your Processors set to use the Intel SpeedStep® technology.  This technology ‘steps’ down a processor’s speed to save with power consumption.  Most times I’ve run into this at clients, Balanced has been the default setting. 

Feel free to save the world but only if you really want to…