NZXT HALE90 750W Power Supply
Author: Zahn Funk
Editor: Shawn Knight
Date: 10-29-2010
Provided by: NZXT
Installation / Testing

The NZXT HALE90 750W power supply will be installed with the following hardware:

AMD Phenom II 1090T X6 BE
Swiftech H20-320 Edge
2x2Gb Crucial Ballistix Tracer DDR3-1600
128Gb Crucial C300 RealSSD
Icy Dock 2" Adapter
1Tb WD Caviar Black
ASUS EAH5870 V2 1G
Optiarc 24x DVD+/-RW
Cooler Master HAF 932 AMD Edition

The HALE90 modular cables are very easy to bend and route through your case, plus the flat design doesn't take up much space behind the motherboard tray, a fact you'll appreciate when it comes time to put the back side panel on. This is also the first power supply I have used in the full tower HAF 932 that did not require an extension for the +12V CPU/EPS cable.

Using a Kill-a-Watt meter, I measured the power usage of the system at the outlet, during both idle and load. To generate the load I used OCCT's power supply test utility, which stresses both the CPU and GPU up to 100%. With AMD Cool-n-Quiet enabled, the CPU reduces clocks and voltages at idle, similar to the power saving mode of the GPU. Thus only 95W is being used when there's very little running in the system, and up to 448W at peak load. Compared to the max continuous rating that NZXT gives the HALE90 750W, a little less than 60% is being utilized. Thus under "typical" load, the system should fall somewhere around that sweet spot of 50% where the power supply will be its most efficient.

With a Fluke digital multimeter, I also took voltage readings at the back of the connector under idle and load conditions. Neither the +12V nor +5V rails changed much going from idle to load state, only 0.01V for both. Fluctuation was minimal, the reading changed by only 0.01V as well, alternating between the idle/load values. The +3.3V saw the biggest difference, dropping 0.03V from idle to load state, but again only varying by 0.01V under load stress.

As I mentioned, the HALE90 is NZXT's first 80Plus compliant power supply, and meets the criteria for Gold rating of 87/90/87% minimum efficiency at 20/50/100% load as certified by testing. A Gold rating is quite an accomplishment, and does offer significant power savings as compared above with another recently-reviewed 750W power supply, the OCZ Fatal1ty. Testing both power supplies back-to-back with the same hardware, the Gold-rated HALE90 750W uses 8W less at idle, and a whopping 32W less under load, compared to the Bronze-rated OCZ Fatal1ty 750W.

Let's wrap things up with some final thoughts and conclusion.

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