Cooling Efficiency Tests
The table and diagram below show the results obtained for our today’s testing participants during cooling efficiency tests:
The results speak for themselves. Noiseblocker NB-TwinTec equipped with a default fan rotating at 1600 RPM performs as effectively as Zalman CNPS10X Performa with a default fan at 800 RPM. I have to say that this is not a very promising result for NB-TwinTec. Moreover, I have to point out that the processor temperature lowers by only 7 degrees when we speed up the Noiseblocker fan from 1000 to 1850 RPM. For example, when we increase the fan rotation speed on CNPS10X Performa from 1000 to 1800 RPM, the CPU temperature drops 12 degrees down, while on NB-TwinTec it gets only 7 degrees lower. Obviously, the heat column is not as effective as a regular tower heatsink on five 6-mm heatpipes. Summing everything up, Noiseblocker NB-TwinTec falls ridiculously far behind Zalman CNPS10X Performa: in some situations the difference hits 14°C.
As for the efficiency of Noiseblocker NB-TwinTec with two Thermalright TR-FDB fans, again there is nothing to be particularly proud of, although in this case the cooling efficiency increases in a more dynamic fashion as the fans speed up (the overall improvement is 11°C from the min to max fan speed). A cheaper Zalman CNPS10X Performa at 800 RPM fan speed outperforms Noiseblocker NB-TwinTec with the fan rotating twice as fast! And at 1000 RPM Zalman cooler outperforms the Noiseblocker competitor at its maximum fan speed. As for the performance comparison against Thermalright Archon, there is simply nothing to say.
The last thing we wanted to check out how well Noiseblocker NB-TwinTec with one fan at 1850 RPM would cope with the maximum CPU overclocking challenge:
As we found out, the heat column cooler could only let the CPU remain stable at 4.3 GHz frequency and 1.4 V Vcore. In this case the peak temperature of the hottest core of our Intel Core i7-980X Extreme Edition processor reached 93°C. I have to say that this is a very modest result.