Overclocking a computer's processor or memory causes it to go faster than its factory rated speed. A processor rated at 2.4GHz might be overclocked to 2.5GHz or 2.6GHz, while memory rated at 200MHz might be pushed to 220MHz or higher. The extra speed results in more work being done by the processor and/or memory in a given time period, increasing the overall computing performance of the server. When you configure the VMware ESX Server, various system parameters are assigned predetermined values. These parameters control settings for memory, the processor and networking, for example, and affect the running of virtual machines. You can view these settings from the management interface in “Changing Advanced Settings”. To change the setting for the VMkernel configuration parameter, click the link for the value in the "Overclock" advanced setting. The Overclock VMkernel Parameter Update window opens on top of the VMware Management Interface window. In the next figure you will see one of the ESX server at 102%. When you can’t find this setting, download the newly released patch here. :-)
