How hot is it safe to mine GPUs?

[ghuang168]

I got 2 card always up to 80 and other 4 card in 75-79

[Emoclaw]

As long as the VRMs are adequately cooled (depends on the manufacturer), you're fine running at 85C. Be careful with multiple GPUs though and ensure good airflow.

[nu1mlock]

I had two Sapphire Nitro R9 Fury cards in one PC that were mining 24/7 at max speed and no undervolt. Since they were in a PC with no risers, they were really close together and the temps were at 84c for the top card and around 70c for the bottom one.

The 84c card broke after two months. I got a new one (warranty) and then that one broke after one week.

The 70c card still works.

The cards also thermal throttle at 84c.

[Jdope]

I have 2 msi cards that run 46/55° Celsius, compared to 31°C of the ambience, I'm pretty sure that you can run up to 60-65 without having to worry about your cards if they are in a well ventilated room, anything more than that I would personally consider not good.