The fan directly above the vrm heatsink may be the culprit.
When I turn the fans by hand, there is significant resistance in that one bearing.
Also tried hooking them up to a psu, and the one over the vrm's did spin at a much lower rpm.
If i stopped it with a finger while running, it would only sometimes start by itself.

Same thing here..

Guess I will steer clear the Gigabytes in the future.
Card was undervolted and running 76C core temp.
It has been mining for a year, and on a powered riser.




The magic smoke escaped!

My contribution to the list of homemade and sketchy mining rigs..

Undervolted and OC'ed 7970 (and one 280x) cards.. Stable 24/7 at 715-720khs.

Bought two MSI 7970, international shipping to Norway, very good packaging!

Cards are happily hashing LTC in the basement right now.

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