I have a Gigabyte Z77X-UD3H motherboard with the i5 3570k processor and hyper 212 evo. I'm not looking to get 5.0 ghz out of this processor. I simply wanna hover around 4.0 to 4.2. Is there a way to do this without changing voltages? Couldn't I just change the multiplier to 40 or 42? Or will it get too hot by not changing the voltage? Secondly, does anyone know of a good guide for overclocking this particular CPU and motherboard?