Recently I've been having major issues with gaming on my desktop, I have a Gigabyte Radeon R9 280 3X Windforce. Whenever I put my GPU under load from games like Dirt 3, GTA V and Skyrim, It works for about 30 seconds, then the display starts to flicker loads of jumbled up stuff from what was being displayed, then the screen is filled with a random colour. Consequently, my PC crashes and restarts. I've tried
Completely cleaning my GPU and system using compressed air
Improving airflow by removing a hard drive cage
Stripping and clean installing drivers
Swapping my GPU over to my other Pci-e slot
The weird thing is that I benchmark using Heaven benchmark whilst monitoring temps, nothing in my system gets noticeably hot. My GPU isn't showing anywhere near high enough temperatures that would warrant crashing due to overheating. I run my fans up to max whilst playing under load and it still crashes.
Has anyone else had the same issue and/or knows how to fix it?
Many thanks