"Our experience with Akasa's Turing chassis for the Bean Canyon NUC had greatly raised our expectations when we were in the process of integrating the NUC11TNBi5 into the Akasa Newton TN fanless case. Our initial experience was very good - the case was actually quite cool to touch, and the package temperature was in the high 30s after the system was left idling at the desktop for more than 15 minutes. Most of our real-world benchmarks showed very little difference when compared against the actively-cooled version's results. Even in our stress test, the unit managed to escape throttling even though it brushed the junction temperature dangerously towards the end of the particularly strenuous workload component."
Source: AnandTech