@PP_CrazyApple ah okay
i would double up the ram (not if you have a ddr2 board, waste of money), more is always better.
set it up to 3ghz, probably get a cpu cooler like the mugen 2 for example (can be used on any other socket too, so no waste of money)
thats with the new psu and the new gpu should be a great increase in fps for sure.
about the overall cooling "problem". you will run into a problem when its getting to hot cause the cpu will downclock itself and i dont think that this is what you want.
and it will get hotter cause you increase the speed by 600 mhz, the new gpu card is hotter than your old one too, remember that. overall you need a better airflow.
sure you can prevent the downclocking by disabling eist/ci in the bios settings but then your cpu can/will die.
everything above 50-55° is too much for a q6600.
@[MPGH]Heartview that was a few years ago, nowadays its commonly supported by the latest games