Enermax Galaxy 1000W Power Supply

Category: Power Supply
Manufacturer: Enermax
Provided by: Coolergiant Computers
Model: EGA1000EWL (active PFC)
Price: See latest prices

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The Test

Instead of jumping in a new and low power consuming Conroe I've decided to use in this test AMD Athlon 64 FX-60, which has TDP of 110W. I think it is pointless to test the power supply of high caliber equipment like the Galaxy with only 1 hard drive, low power consuming Conroe and a single video card, don't you think? Well, Quad SLI is a must but with Quad SLI only you won't stress it much ;) While monitoring the system with my multi-meter I started a DVD burn process, initiated a copy process of a total of 20GB files from one RAID to another, fired an SM graphics test from 3DMark06 in a loop at 1600x1200 resolution with enabled 8x AA and 16x AF. System become quite slow. On top of that I've managed to start a Prime95 to stress out the CPU which slowed down the system completely.

The following is the list of components of the test bed:

Motherboard DFI NF4 SLI-DR UT
CPU AMD Athlon 64 FX-60 @ 3.0GHz
Video 2 x EVGA GeForce 7950 GX2
RAM 2GB (4x512MB) Mushkin Redline XP4000
System HDD 2 x 36GB WD Raptor in RAID 0
Storage 1 HDD 2 x 250GB Seagate Barracuda 7200.10 in RAID 1
Storage 2 HDD 1 x 400GB Seagate Barracuda 7200.10
Optical Drive Asus DRW-0804P
Sound Sound Blaster X-Fi XtremeMusic
CPU Cooler Zalman CNPS9500 LED CPU cooler
Fans 6 x 120mm Fans
Power Supply Enermax Galaxy 1000W
OS Windows XP Professional SP2

Noise level: The Galaxy's 135mm fan is just simply silent. The backside of the PSU has another fan which is also pretty quiet.

The most important power draw is on the +12v rails. Measuring the +12v rails separately with a multi-meter shows stability in Watts.

This picture shows +12v on PCI-E under load.

Both PCI-E +12v measurements results were showing +12.07v and were incredibly stable during the whole load test. The rest of the pictures were +12v results on HDDs and CPU rails. I've recorded a tiny fluctuation of 0.01v on the CPU but as we know that 5% fluctuation is absolutely acceptable and the +12v should remain between 11.4 and 12.6V. From the below results you can see that Galaxy 1000W is stable "like a rock".

LOW (the lowest measured value)

  +12V +5V +3.3V
Idle 12.01 5.02 3.32
Load 12.03 5.04 3.32

HIGH (the highest measured value)

  +12V +5V +3.3v
Idle 12.07 5.03 3.33
Load 12.06 5.04 3.32