If you're running an air conditioner and a "space heater" at the same time it might be worth reconsidering your priorities.

I can watch 1080p video on YouTube and it runs in an up-to-date web browser using less than 50% CPU on 12-year-old hardware with 8GB of RAM and a graphics card that was a budget option at the time (my searches indicate it draws at most 80W, though it expects a 500W PSU for some reason).

You can use nvidia-smi to reduce the powerdraw of the card to just below what will trip the breaker.