Antec Phantom 500w Silent PSU


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.

Antec Phantom 3.3v Antec Phantom 5v

Very little fluctuation was observed on the +3.3v rail of the Phantom, with voltages only dipping by 0.07v when under load. However, the +5v rail suffered from quite a bit more fluctuation with the voltages dropping to 4.76v. While this quite low it still remains just within ATX specifications.

Antec Phantom 500w 12v1 Antec Phantom 500w 12v2

Both of the +12v rails on the Phantom produced the same idle and load results in our testing. Dropping to 11.93v when placed under heavy load, the results were somewhat average for this type of unit.

Efficiency Testing

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.

Antec Phantom 500w Efficiency

The Antec Phantom 500w was placed under a load of 406 watts. This counts for a total of 81% of the power supplies rated output. At this load, the power supply required 476 watts from the mains to produce the 406 watts required by our custom made power supply tester.

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%.

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 - 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!
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Most Recent Comments

11-08-2006, 05:29:00

Originally Posted by name='"XMS"'
Quiet as a dead mouse

Nice review - would be a great one for a media PC Quote

11-08-2006, 05:36:12

Nice little PSU for those who really value silence. Very neat looking little unitQuote

11-08-2006, 05:50:39

Nice review but i wouldn't consider getting oneQuote

11-08-2006, 07:49:49

Yeah its a good looking unit with some good features. Out of all the PSU's i;ve tested so far, this would have to be the best for a silent PC build.

If anybody wants to see any other silent PSU's tested, let me know Quote

11-08-2006, 13:26:20

how about a tagan 580w review? looking at one for my buildQuote

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