Considering that this system only includes a single exhaust fan, these numbers are pretty amazing. The only real outlier in the numbers is the GPU idle. This is high for two main reasons. It is a semi passive cooler on this GPU, and there are no intake fans included with the case. Not only would a couple of 140mm fans in the front reduce the idle temp, but I would bet that you’d see lower load temps on the GPU and CPU as well.
The rear exhaust fan really should be replaced with something better quality as well. It moves a decent amount of air, but at anything over about 975 rpm, it’s quiet loud, and over 1100 it is quite obviously the loudest component in the system. Even below 975 rpm, the tone of the fan is a bit unpleasant to my ears.
Despite the fan noise, the temperatures speak for themselves. Even the best SFF cases I’ve tested can’t match the temps of the H3 Flow.