shadow32 :
shellls45 :
You should not overclock on that 3+1 phase MOBO. The VRMs can't handle that kind of current. Look at my motherboard recommendation link.
Out of those, which one is the cheapest for Overclocking?
Let me ask you some question - what do you expect with overclocking?
By now it is pretty much an established fact that anything beyond 4.4GHz for you will require a significant investment...
So realistically, you will buy a new board and possibly a new fan and you will get to 4.4GHz (maybe). Let me tell you - the actual performance difference for you will be like 5%... You won't feel it.
Just try to bump it to 4.2GHz with whatever you have now and be done with it. That's my advice.