Quote Originally Posted by ryboto View Post
The HR-01 Plus has fewer fins, less surface area for convection. It's ideally suited for low airflow or semi-passive installations. The fin spacing helps with thermal boundary layer issues when there's less airflow.
I did the testing on the two tonight for passive, both failed miserably, basically they just heated up, and continued to heat up, and even after it passed the thermal limit of the tests, it only cooled down 5c, this is even with a fan simulating an intake fan, blowing from a few inches away across the heatsink.

Im gona try with some low speed yate loons now, see how the numbers turn out.