So I've been adding cards to my rig started with 1 Radon 5870 with a Zalman VF3000 cooler, great temps and everything. Add second card, stock Batmobile cooler, it goes into the 3rd pci-e slot due to my board's layout to keep them both at x16. Been going months just fine. Now add a 3rd card, and due to my case limitations the card arrangement must be starting from CPU working away, 1 stock cooler 5870, 2nd stock cooler 5870, 5870 w/ VF3000 (since it occupies more than 2 spaces). But now for whatever reason, the VF3000 card is registering overheat (+95C), this isn't the middle card as I said, it actually has the most airflow since it's on the bottom. Only thing I could think of is maybe the exposed rear side of the card has something to do with the increased temp, but even then the GPU portion of the backplate is exposed anyway...
I've tried reapplying TIM and I'm actually running just the 5870 w/ VF3000 right now to type this and temperatures are fine like they have always been...
SOLUTION: FYI for any future troubleshooters, the problem turned out to be the way the Zalman VF3000 mounts, the thumbnuts on the back protrude just enough to allow the card above it to push down on the screws, unseating the heatsink. I was originally going to try to find some very small nuts to replace them, but opted for a much more utilitarian route of breaking off the plastic housing from the thumbnuts, just enough clearance.
09:44 PM by