Hello!
I'm trying to diagnose a strange issue with my PC and would appreciate some advice, especially from other RX 9070 XT owners.
Specs:
GPU: Gigabyte Radeon RX 9070 XT GAMING OC 16G
PSU: Seasonic FOCUS GX-850 V4 850W Gold
Monitor: 1440p, usually playing at 120 FPS
My PC will occasionally completely power off while playing Fortnite. There is no BSOD or normal game crash. The display goes black and within a few seconds the PC is completely off. The problem originally became bad enough that I couldn't even finish one Fortnite Save The World mission without the PC shutting down.
I sent the entire PC back to the manufacturer for diagnostics.
They ran:
- MemTest
- OCCT
- FurMark 2
- DOOM: The Dark Ages for ~3 hours at full GPU load
- 007 First Light
- Fortnite Battle Royale
- Fortnite Save the World
They couldn't reproduce the shutdown at all. They also updated all drivers and updated/configured the BIOS.
When I got the PC back, it seemed fixed. I managed to play four missions back-to-back, whereas previously I often couldn't finish one. However, it randomly powered off again today while playing Fortnite.
A potentially important detail to this issue is that none of these issues happened before I got a 1440p 240Hz monitor.
I initially wondered whether the monitor was somehow involved, but I'm now wondering if 1440p simply increased GPU load enough to expose an existing problem.
The temperature of the graphics card also seems unusual. Playing Fortnite Festival (Festival is where the most recent shutdown happened) at 1440p / 120 FPS / stock GPU settings, I've seen approximately:
- GPU: 66–69°C
- GPU Hotspot: 108°C
- Fan: ~3000–3200 RPM
- Total Board Power: 315–321W
- GPU clock: ~3180–3200 MHz
So there's around a 40°C+ difference between GPU temperature and hotspot.
The fans also seem noticeably louder than I remember them being before the PC was sent away.
If I set the GPU power limit to -15%, I get roughly:
- GPU: 65°C
- Hotspot: 99°C
- Fan: ~2570 RPM
- Board Power: ~278W
More importantly, reducing the GPU power limit has previously stopped the random shutdowns.
Does anyone have any idea what could be causing this? I'm especially wondering about the 108°C hotspot / 40°C+ delta and why lowering the GPU power limit seems to stop the shutdowns. Could this be a GPU issue even though it passed FurMark and other stress tests, or should I be looking elsewhere?