I've got a 1660 that I sometimes set to mining when I'm not doing anything else with it. I use Nvidia-smi to set the power limit to 75W to keep the fan from be

I've got a 1660 that I sometimes set to mining when I'm not doing anything else with it. I use Nvidia-smi to set the power limit to 75W to keep the fan from being audible. A full month of mining would net about $50 in ETH for $4 in electricity. If you are buying equipment just to mine, it's probably not a good plan. But if you already have it, sure, it's pretty profitable.