So guys, I'm getting a 1 year old i5 2500k processor. The previous owner has never overclocked it because he has a h67 motherboard. I have a proper z68 motherboard and a Corsair A70, so I'm planning to overclock it to 4.5GHz at least. However, I'll only do that in December, when I get myself a GTX 780 (I currently have a GTX 570, so the stock i5 will not bottleneck for sure). By then the processor will have ran 1 year and a half on stock, and my question is: will that make it a weaker overclocker? I heard that the processor "gets used" to the voltage it ran at for a long time, is that true? In this case, is it better if I just overclock it right now instead of waiting for the 780?