Had this thought in my mind driving home.
You can have 2 loops, one for cpu and one for gpu, a radiator that acts as lungs.
Googled the pumping heart and found it here.
https://www.ethz.ch/en/news-and-events/eth-news/news/2017/07/artificial_heart.html
Would make a pretty cool video.
If color changing liquids that are more red when cool more purple when hot would be awesome.