Will the PSU be able to even run the GPU and CPU? I recently asked a question regarding whether it can run an R9 380 and I was answered with a yes. But the R9 280x uses more power so I'm unsure right now.
This is my PSU : http://specsen.com/power-supply-hec/hec-500te-2wx-500w/
This is my PSU : http://specsen.com/power-supply-hec/hec-500te-2wx-500w/