well the current GPU fan isnt working as efficiently as it could because the airflow is disrupted by the output from the CPU fan. the CPUs run pretty cool, even after a monster AH session, so the exhaust is also pretty cool. its this airflow I want to use to blow over the passive cooler.
Do you have something mounted wrong? I don't get it.
The CPU fan should be blowing toward the back of the case, almost directly into the exhaust fan if it's an aftermarket tower type unit, or blowing directly down into the heatsink if it's an Intel stock type unit. The GPU fan should be facing the bottom of the case with the CPU on the other side of the card, above it.
There shouldn't be any interference or disruption between the two of these. Even if you have a northbridge fan it should be blowing onto the nothbridge heatsink which is also mounted above the video card (opposite side from the GPU fan).
That said Nvidia cards run hot but they are rated to do so. I run my GPU fan at 65% always and my GPU never exceeds about 55C under load but they are rated to well over 100C. As long as you can get that heat out of the case you should be ok to let it heat up a little. If you let it get too hot you'll know... you'll get black-outs, grey-outs, freezes, etc. while gaming. As long as that's not happening your OK.
If you really don't like fan noise maybe it's time to look at a water cooling solution.
