The NVIDIA Jetson Nano is one of the most powerful SBCs on the market, but it only passively cools its 128 CUDA core and 472 GFLOPS-capable GPU. Now 52Pi, the company behind the ICE Tower Raspberry Pi CPU cooling fan, has returned with a version for the Jetson Nano complete with two 5 mm copper cooling tubes. The cooling solution replaces the pre-installed heatsink on the Jetson Nano and ships globally for US$24.90.
https://www.notebookcheck.net/52Pi-brings-extreme-cooling-and-color-to-the-NVIDIA-Jetson-Nano-Developer-Kit-with-the-ICE-Tower-CPU-Cooling-Fan.442109.0.html