Welcome to the forums, Alblue.
There is not an expiry date on overclocking!
If you post details of your hardware, in particular motherboard/BIOS and cooling, you might get some advice on overclocking settings for a nice boost in speed. Like many ppl here with i5-750 & 760, I run mine at 4GHz.
(BTW, although it is not a Nehalem core, the same principles apply - so see the sticky thread for Nehalem i7 overclocking.)