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.


http://i44.tinypic.com/2u4o48h.jpg

The magic smoke escaped!
http://i39.tinypic.com/2e5pm5k.jpg

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.

http://i41.tinypic.com/sqs1mq.jpg

http://i40.tinypic.com/jq5q2c.jpg

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

Cards are happily hashing LTC in the basement right now.

Market

Texas

Story

Soviet

Capitalism

Vampire

Sand

Cold

Access