The Tagan Turbojet was placed under a load of 886 watts. This counts for a total of 80% of the power supplies rated output. At this load, the power supply required 1072 watts from the mains to produce the 886 watts required by our custom made power supply tester. Therefore the efficiency of this power supply can be found by a simple equation: (886 / 1072) * 100 that works out to be an efficiency rating of 82.6%. Noise Testing
At present Overclock3D doesn't have the professional equipment required to reliably measure the noise output of devices. However, as a new part of our testing procedure we will be recording the PSU at idle and load so that you can make your own judgments. All recordings are taken at 30cm distance from the unit.
Idle Recording - Download
Fan Increase Recording - Download
Load Recording - Download
Before you go away with the wrong impression from these recordings I'd like to remind you all that these recordings were taken outside
of a PC case. As a result the PSU is actually quite a bit noisier in these recordings than it is in real life.
As stated earlier in the review, the Turbojet utilised two 80mm fans. The one closest to the back of your case is designed for silence, whereas the fan located inside your case is designed for performance. As a result the noise from the high-cfm performance fan is dampened by your case enclosure, and the majority of audible noise from the unit comes from the more silent Globe Fan.
Tagan have also impemented a fan speed controller that adjusts the rpm of the fans based on the PSU load. This works quite well, but you can expect the fans to be running at 100% once the PSU gets to around 75% load. You can hear the fan speed increase in the recording above.
For those of us looking for a silent PSU to go inside their HTPC system the Turbojet may not be ideal, however it is highly unlikely that a silent/HTPC system would ever need a whole 1.1kw of power. People utilising a Quad-SLI high-end system are likely to be accustomed to noise, and for these people the Turbojet's noise levels should be reasonably acceptable.