Things change quickly in the world of IT. A lot of the main overclocking boards have come down in price.
And we now have the E4300 which if you pop into this board will get you near to 2.7ghz which will be faster than my E6400 @ 2.3
So E4300 is your best bet if you're going with this board.
Alternatively do things properly and you could get a simple E6300 to 3.5ghz or 3.2ghz for the non experienced clocker....
P5n-e Sli or DS3 mobo : £70 - £80
E6300 : £120 ish
DDR2(at least 900Mhz stuff) Memory : £150 (yes its the most expensive but the most important if your going to overclock)
---------- Post added at 22:42 ---------- Previous post was at 22:40 ----------
Oh forgot yeh : You'll need a PCI-express graphics card too
Oh well best bang per buck : E4300 + the DualVSTA