memory concerns: upgrading from dual core to quad

the e6600 also runs at 1066fsb

No, it will not be limited at all.

You won't see much performance difference between the E6600 and the Q6600. All a Q6600 is is two E6600's on the same die. Most software and games don't use four cores yet and the one that do isn't that big a difference. Spend $300 somewhere else.  

agreed ^^^ , u wont see much difference

I agree somewhat as well. Your memory will work fine with the quad. But the increase in performance per dollar spent can probalby be spent elsewhere for the time being since the difference between dual and quad right now is only seen in like divx.

actually im trading my e6600 (plus a little cash) for a new q6600. so its a good deal rite?

and thnx for the input

What do u do with your PC ?

also might want to check if its the G0 or B3 version that you are swapping for

Yes, it's a good deal.

wats the difference btween g0 and b3?

u didnt answer that what u do with your PC ?

G0 OC's better than B3

its a G0.

and abt the pc (long story short), i had to build a system 4 a cousin. i added a little cash to his modest budget and bought a midrange pc and a quad core. put my e6600 in his system and took the quad core.