Overclocking a Core 2 Quad to compete with an i7 is a total waste of time. The architecture of the i7 has resulted in a 40% drop in latency on the chip. Many motherboards overclock the i7 by default these days anyway. The i7 also has Turboboost and this assists single thread applications like many of the older games a great deal.
thanks for the insight .... just have to update my system to a i7 then it seems