Temperatures
Processor at 65W
Despite a more violent 65W profile, the latter still represents the least stressful phase of this protocol. It allows to highlight the performances obtained with compact/entry-level heatsinks. These results are only indicative for the largest heatsinks (AIO, large dual tower, etc.). 
When it comes to temperatures, the HX6250 from Jonsbo does well. At full speed, it does as well as a Dark Rock 4 or a DeepCool AK500. At low speed, we read 43°C with temperatures that don’t really take off at mid-range, which is equivalent to the much more compact DeepCool heatsink.
Processor at 95W :
Here, our CPU will run at 3.90 GHz constantly and on all its cores. We apply a VCore of 1.375V to obtain a consumption of 95W approximately. To simplify the reading of the graph, we may have rounded some values to the nearest integer. 
At 95W, the Jonsbo heatsink shows a very good score at high speed since it offers similar performance to the excellent NH-U12A from Noctua. At mid-range, the Jonsbo heatsink stays in the ranking, but at low speed, it falls down to the level of theAK500. Remember, it has only one fan, unlike the Assassin III, the NH-D15, the AS500 Plus and the NH-U12A!
Processor at 125W :
Finally, we finish with our 125W profile. Here the heat release is more important, let’s see how our coolings do! 
At 125W, still at full speed, our model is very well positioned against the competitors. Again, it gets temperatures equivalent to the AS500 Plus and NH-U12A. On the other hand, at low speed, we feel that it starts to lack breath and gets closer to the AK500. The same is true at mid-range.
Summary
As we have seen, the HX6250 is very good thermally at its highest speeds. Nevertheless, at low rpm, it does a little less well than the competition and comes up against the much more compactAK500 from DeepCool. At low speeds, the fan struggles to compete with the push/pull configurations of the competition. However, don’t get me wrong, the results are still very good, at least on the thermal side.
