Assuming you can install two GPUs using 600W, that's basically running a hair dryer in your desktop since most of the energy is converted to heat.
This got me thinking. ( I must be missing something or having wrong assumption in my high overview of the issue. ) Do Crypto People use their GPU generated heat as heater assuming they lives in a place that requires heating anyway? Doesn't that equate to free money assuming they could actually mine crypto?
Some people use electric heating even without crypto so using GPUs to mine crypto to get the same effect is a no brainer.
Problem is that during the summer you have to get rid of the excess heat, so you need air conditioning or perhaps open air cooling.
Not gonna lie, I've used my GPU to heat up my small room before.