Proper Overclocking for Mining..?

[gateway]

I was wondering after doing a bit of research the proper way to deal with over clocking for mining specifically.

I just bought a card that has voltage unlocked and I have been reading forms that changing the following helps increase hash rates

* Core Clock
* Memory
* Voltage

Some settings I have seen and well tested on a older card where

Core = 980
Memory = 300
Voltage = default

So what settings do I adjust first to see about increasing hash rates, keeping the system stable and the heat down..

For example do I push core to 1000 keep everything set, or when I push core do I need to adjust memory up or down and or voltage.

Can some kind sole explain how this is best done in steps..

[wowfreaks22]

try 1.012 volt for 1000core

[gateway]

Is their some sort of guide for when you need to adjust and what to adjust?  I could play with settings all day long but the question is if I push the clock rate do I need to adjust the volts?