Bit Tech has a writeup of the achievement over here. The breathing PC features the AMD Ryzen 5950X, the NVIDIA GeForce RTX 3080, some RAM, and storage. So how does it perform?
DIY Perks ran a few CPU and GPU stressing benchmarks to try and whip up some heat. During the tests, the CPU appeared to hit 60°C maximum, and the GPU reached a plateau at 62°C. These cooling results impressed the YouTuber, as previously the air shifted by the bellows system was measured to be roughly equivalent to four case fans. Overall it was felt the project delivered a pleasingly organic 'breathing' PC which was amply cooled – though some refinements will definitely be worked on to make it even quieter and smoother running.
Definitely an interesting concept!