How to overclock this cpu

[MENTAL BAHAMUT]

I want to overclock an Athlon II X4 615e on an AMD 880G motherboard
What settings should i go with?
Want basically a maximum boost with a stock cooler
to last over a month until can upgrade to an fx 6300

 

[Agera One]

Ask this question in the overclocking category and you'll get many answers.