A few weeks ago I bought a used Asus R9 280X to replace my XFX 280X which appeared to be having VRAM problems. A couple days ago I received said Asus 280X, and immediately ran in to a plethora of issues.
After sorting out a problem with one of the fans coming in to contact with the heatsink (don't ask) I was finally able to begin stress testing. I decide to use Unigine Heaven first, and I encountered a horrible amount of artifacts within a few seconds of starting the benchmark. I managed to fix this by underclocking the VRAM a bunch (not sure how much was required, I just dropped it to 1200mhz and it worked fine, figured I would sort that out later). So move on to the NEXT problem, instead of horrible artifacts, any highly demanding game or stress test now either crashes and plops me back on to my desktop, crashes my video drivers, or freezes my entire system, requiring a reboot.
I have tried 1. Underclocking the GPU core to 850mhz (no effect) 2. Giving the core slightly more voltage (no effect) 3. Reinstalling video drivers (no effect)
The card has plenty of airflow, and is running off the same 620W Seasonic M12ii power supply that my XFX 280X was running off of with no problems. The card seems to get to 80C before it crashes, not a good temperature by far, but still shouldn't cause major problems like this as far as I know.
I'm truly stumped, ready to put it on a shelf and never touch it again. Already got a full refund.
1200mhz on air? when stock is 850mhz? you probably killed the card. You realize all those high overclocks posted are from people do are in watercooling. I rarely go over 200mhz or 50mhz while OCing and I watch my temps.
280x/7970 is fairly cool card as compared to say the flaming 290x.
says 1070mhz. Ok, I would swap out PSU or I would plug a different pcie cable into it or different slotted one. you could try OCCT and check the voltage spikes.
Hmm didn't seem to make a difference, although I did notice that the card was still running at stock clocks, despite me underclocking the shit out of it in MSI afterburner. Gonna look in to that.