I've been experiencing crashes while playing demanding games for the past couple of months. It's only the games that crash, not my entire PC, and the timing is quite random—it can happen anywhere from 5 minutes to an hour into gaming. My GPU and CPU temperatures hover around 65-75 degrees Celsius, and my VRAM usage is typically around 6GB. I've run some benchmarks and stress tests without issues. The games that are crashing include MSFS 24, Battlefield 6, Squad, NFS Unbound, BG3, and GTA 5. My setup includes an Intel i7 12700k, an RTX 3070, 32GB of RAM, and an EVGA 850W PSU.
4 Answers
I had a similar issue myself. Initially, all the overlays reported normal temps, but GPU-Z showed my hotspot temps hitting over 100 degrees when I stressed it. After redoing the thermal paste and pads, the issue resolved until I upgraded my GPU. Make sure to monitor those hotspot temps closely!
Start with some basic tests using OCCT for large FFTs or memory tests. They can expose errors fast. Also, I'd recommend doing a clean install of your graphics drivers using DDU to make sure there aren’t any leftover issues from previous versions.
It sounds like you should run a memory test since your CPU and GPU stress tests passed. Try using memtest86 to check your RAM. If there are errors, that could definitely be causing your crashes! Also, it might help to check the crash logs of the games to gather more information about what's going wrong.
It could be that your RAM isn't receiving enough voltage. I ran into crashes with demanding games and found that I needed to adjust the voltage settings for my RAM. Research your specific RAM kit for the recommended voltage, and see if that solves your crashing issues.

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