My Gigabyte Windforce R9 280x card will for some reason hit its thermal limit at 70 degrees while under load. When it reaches the limit, it underclocks from 1100(stock out of the box OC) to 1000, and will not go above 70 degrees
Windows 8.1 64 bit
CM storm Trooper(to show i have good airflow)
MSI Z77A-G45
Intel i5 3570k (overclocked to 4.2 GHz, probably not the problem)
4x4GB Corsair Vengeance RAM stock (2 high profile, 2 low profile)
Gigabyte Windforce R9 280x OC (1100MHz out of the box)
Samsung 840 250 GB (windows disk)
WD 2TB HDD Storage drive
Antec 650W Earthwatts Platinum PSU
Shown above is a benchmark done with MSI kombustor and GPUz to check the temps and clock speeds.
Previous to this, i had a Sapphire Dual-x R9 280x which also had a Throttling issue so i sent it back under warrenty and Sapphire sent me back this Gigabyte model. The issues before was that it would underclock from 1020MHz to 870MHz whenever it felt a bit of continued stress. Now this "new" card has a slightly different issue where it gets under laod and goes down to 1000MHz at 70 degrees.
Does anyone know where the problem lies? If it is my system or my MOBO or even the "new" card they sent me?
GPU-Z Sensor Log.txt