Antec Phantom 500w Silent PSU
Published: 11th August 2006 | Source: Antec | Price: |Load testing
In order for the results from all current and future PSU reviews to remain fair and comparable, Overclock3D uses a custom built Power Supply load stress tester.
The tester will be placing the following loads on each of the Phantom's rails:
+3.3v - 20a Load
+5.0v - 20a Load
+12v1 - 10a Load
+12v2 - 10a Load
The results are collected from a Mastech MAS-345 Multimeter which logs its readings via RS232 to a PC.
Efficiency tests are performed by measuring the wattage consumed by the power supply at the mains against the power (in watts) consumed by the OC3D power supply stress tester.
The results may not be as accurate as those produced by professional testing equipment, but will certainly come in handy when comparing several power supplies against each other.
Therefore the efficiency of this power supply can be found by a simple equation: (406 / 476) * 100 that works out to be an efficiency rating of 85.2%.
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 - Not required. Unit makes no noise!
Load Recording - Download
At idle the Phantom made no noise at all! This is due to passive cooling utilised by the unit working effectively.
After around 10 minutes under full load, the Phantom powered up the 80mm fan to deal with the increasing temperatures. The fan appeared to run at 100% speed throughout, but was never noisy or intrusive. With the Phantom 500w installed inside a case I was once again unable to hear the unit!