besides the fact that the models are trained on stolen, copyrighted work, the output is trash without millions of man hours painstakingly tuning it: https://www.cjr.org/tow_center/qa-uncovering-the-labor-exploitation-that-powers-ai.php

You can but you'll need a bigger rad. The GPU will run cool but heat up your whole loop and your CPU will end up running a little hotter unless you separate them.