Overclocking greatly varies due to what hardware is being used and who is doing the overclocking. Always remember that no two pieces of hardware will perform the same, so our results will differ from what you might be able to get.
Overclocking with the new Sandy Bridge processors has been simplified, at least in part. Adjustments to the Bclck have been almost done away with and overclocking is almost completely done through increasing the multiplier. When overclocking we used to run out of room on the Bclck or cooling. Now we are going to be limited by the Multi-wall. The Sandy Bridge processor just isn’t capable of going any faster; it’s all dependent on the piece of silicone that you get when you purchase your processor.
The Intel Core i5 2500K utilizes a bus speed of 100MHz, though the ASUS P8Z68-V Pro is picking it up at 100.3MHz. Under full load the Intel Core i5 2500K uses a multiplier of x33 to achieve the final clock speed of 3.3GHz. Since we are using a K series processor which has an unlocked multiplier we will be able to increase the default x33 multiplier to achieve our overclock today.
The ASUS P8Z68-V Pro has an auto OC feature that is easy to use. Simply select it in the BIOS and hit enter! The system will reboot, and there ya have it! Your machine is now overclocked. The ASUS P8Z68-V Pro brought our Intel Core i5 2500K up to 4327MHz! That is a gain of 1027MHz and it was rock solid.
With a little bit of work, and a little more voltage we were able to bring our Intel Core i5 2500K to 4926.3MHz. It’s not the 5GHz I was hoping for, but a great overclock either way!