Hi,
I'm also owner of this type of GPU. What solved my problem was to lower the GPU's temperature (below 73'C, try more with additional fan if needed). Then it should be fine. If you have older batch of these cards (serial numer similar to 1348xxxx), try undervolting by Sapphire Trixx SW. With clocks around 1080 it should be stable at 1,081V, over 1100 rise voltage higher - 1.120-1.160V
----------------
Donation addresses
BTC: 1ETYyETSWhkVxyj7HrBVEr5iAxAx2uSfTe
What way do you position something like a desk top fan in relation to the GPU? I have a pc tower (with the side panel removed) and everytime I put the fan up against the tower, the damn GPU temp GOES UP! Is it because the side airflow from the desk fan is messing with the upward airflow from the card fans? Makes no sense to me.
It's an MSI R9 280x by the way.