How high might the risk of a mining rig catching fire be? Has anyone ever experienced anything like that?
Normally I think not much should happen if a fan stops or something. But I also read about lots of dust in mining rigs and people putting cardboard in there to improve airflow...
Paper ignites at over 300°C, the inside of the rigs isn't any near that, and if a fan dies, your GPU bios automatically shuts down the card. Worst case scenario you'll melt the core. As far as anything catching on fire, I highly doubt it, but let's say you'll get some expensive bbq out of it at least.