Comment by mgamache

I agree. Peltier fits a narrow niche. If you want a small temperature drop and can dissipate the heat on the hot side and are okay with the inefficiency it's for you. I tried to create a Peltier cooling system for a wearable device. It was a miserable failure. WIthout a way to dissipate the heat (your CPU heatsink + fan comment) it resulted in a net heat gain.