Quote from: Bennyg on July 11, 2022, 04:09:57Don't think a full internal loop will be better. I built one and it's cool, but squishing everything in was a nightmare, tiny pumps suck, and the main bonuses fell away without the giant low noise external rad.The primary limitation in a laptop is that small dimensions (especially thickness) dictate small heat exchangers. Which means you have to push a lot of air through them to make up for the lack of size. Which is noisy and inefficient. Putting everything inside can even make things worse as all that gear takes up space. Not to mention that you're adding mechanical points of failure. Heat pipes work fine at such small distances. Ultimately, you're limited by the exchanger to air interface where liquid can't really help. It's all about surface area and air flow. So, the whole idea is using an external exchanger which can be large and efficient which means you need to get heat from inside a laptop out - which is where liquid cooling makes sense (longer distance, flexible tubing, etc.).