Unfortunately, replacing all my fans (and adding one) did not improve the cooling. Same results. So I just ordered the best PC case for airflow optimization and 5 additional fans. All that is supposed to be here Wednesday.
I'll probably do something wacky like blow air into the current case with my electric fans across a tray of ice cubes to pound out a few renders so I have something to show you guys Tuesday.
But as far as work getting done, I'm pounding them out very fast - much faster than before the new card. Once I get and install the new case and fans I'll set my PC up to render them automatically at night and blast them out while I'm asleep. As it is I've now got 23 images done and waiting to be rendered. By Wednesday it will be many more.