"The E7400 would overclock waaaaaay higher than a E6750 and has a better architecture to boot. 45nm wolfdale vs 65nm conroe. "
That's exactly what I was thinking..+1
Putting OCing aside, the E7400 runs cooler.
Gus e 7400 is better than e 6750
when u upgrade ur cpu then its realy doesn't matter that what is fsb
133 and one more mb cant give u better performance
even pentium d has 4 mb of cache but if we will compare it to core 2 duo then it will b huge diffrence perfomane
here is difference
e 6750............... 65nm which means uses much energy and get hotter ,,,,,,
e 6750 clock.....2.6............ less then e 7400 2.8
e 7400......... 45nm ,,,,,,,,which means runs cooler better for overclcking, and 45 nm has more transistors than 65nm tech,, means better performance
e7400 is 1066 fsb , due to less fsb u can go higher for overclocking,,,
e 6750.... don't have sse4
e7400.... have sse4
is it enough to compare
As zipzoomflyhigh suggested, if it is a new build then I would seriously recommend going for an AMD platform. You'll be able to build a more better gaming system for the same money and the AM3 socket will be much more future proof than the LGA775 which is on the way out. This would be a much smarter choice and will allow you an easy upgrade path for the future.
If you're gaming you could go for an Athlon II X3 or even an X4. If the budget stretches pick up a Phenom II X3/X4 chip instead. Both are good lines of CPU and perform very well in gaming for the money.