New
#11
ok....has the card got good airflow..?? all around it.
i'd open a support ticket with the card vendor, let them know what your seeing.... they may think its worth returning.
usually software is the culprit from my experience with these cards, but there are a few defective units, you've reinstalled windows, run all available drivers & still the problem persists, i dont suppose there's another machine you can test the card in before you start an RMA..???
perhaps it just doesn't like your H/W config full stop.
if you do RMA & the new card does exactly the same your gonna be really upset.
but as i say start up a ticket & see what they suggest, b/c (as you know) there's only so much you can try until your left with the H/W as the problem