It's E4300 btw . First of all, the E4300 is sort of the least favourite CPU to be overclocked. Expect around 3.2ghz the max. I haven seen many good ones that will OC. With this, it's highly recommended u get a good HSF, Big Typhoon etc etc. 4x 1gb Value rams for me definitely

If your a cheapskate like me , and aiming for 3.0ghz, the E2140 will do it well. And aso, pair it with the cheapest decent mobo. You wont be utilizing the potential of a better board. Even by then u decide to upgrade, better and matured chipsets will be available. IMO, the stock fan will be able to do 3.0ghz