Nvidia throttling - Software thermal slowdown

Thermal throttling is a state that happens when your GPU is taking too much load and starts overheating. For Nvidia 3000 series such events are quite common, so it is extremely important to have good cooling system and smart position of your GPUs. It can happen that GPU drivers sometimes doesn't report this state. Thermal throttling can cause: unstable GPUs, hashrate drops, drivers crashes, rig crashes, and any other instabilities.

Did you know? The indicator for thermal throttling with 3000 series issues is usually memory temperature, which is unfortunately not reported by drivers by default. Memory temperature and GPU tempeature are very different so even if your GPUs are cool, memory temperatures might not be. Try increasing your fans to see if GPU gets more stable.

For some Nvidia GPUs, you will see this error displayed as:

minerstat - Nvidia GPU Throttle

Nvidia software thermal slowdown is an indicator of:

  • GPU's temperature being higher than the maximum operating temperature or
  • GPU's memory temperature being higher than maximum operating memory temperature.

Thermal throttling can be solved by:

  • Increasing the speed of your fans to cool down the GPUs even more;
  • Reducing your overclocking settings and making them less intense;
  • Improving your cooling and ventilation system of the rig
  • Replacing thermal pads.

Keep in mind that not all GPUs are affected by this.

Where can I read memory temperatures?

Currently, memory temperatures can't be read from the drivers for Linux. We are looking at ways to add it and Nvidia developers also said they will add it to the drivers reporting soon. As soon as we will be able to read and report this data, we will add it. On Windows workers, memory temperature is reported.

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