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Load Tests

We conducted several tests with this power supply, as described in the article, “Hardware Secrets Power Supply Test Methodology.”          

First, we tested this power supply with five different load patterns, trying to pull around 20%, 40%, 60%, 80%, and 100% of its labeled maximum capacity (actual percentage used listed under “% Max Load”), watching the behavior of the reviewed unit under each load. In the table below, we list the load patterns we used and the results for each load.

If you add all the powers listed for each test, you may find a different value than what is posted under “Total” below. Since each output can have a slight variation (e.g., the +5 V output working at 5.10 V), the actual total amount of power being delivered is slightly different than the calculated value. In the “Total” row, we are using the real amount of power being delivered, as measured by our load tester.

The +12VA and +12VB inputs listed below are the two +12 V independent inputs from our load tester. During this test, the +12VA and the +12VB inputs were connected to the power supply’s single +12 V rail (the +12VB input was connected to one of the power supply’s EPS12V connectors).

Input Test 1 Test 2 Test 3 Test 4 Test 5
+12VA 6 A (72 W) 13 A (156 W) 19 A (228 W) 25.5 A (306 W) 32 A (384 W)
+12VB 6 A (72 W) 13 A (156 W) 19 A (228 W) 25.5 A (306 W) 31.5 A (378 W)
+5 V 1 A (5 W) 2 A (10 W) 4 A (20 W) 6 A (30 W) 8 A (40 W)
+3.3 V 1 A (3.3 W) 2 A (6.6 W) 4 A (13.2 W) 6 A (19.8 W) 8 A (26.4 W)
+5VSB 1 A (5 W) 1.5 A (7.5 W) 2 A (10 W) 2.5 A (12.5 W) 3 A (15 W)
-12 V 0.5 A (6 W) 0.5 A (6 W) 0.5 A (6 W) 0.5 A (6 W) 0.5 A (6 W)
Total 165.6 W 345.6 W 507.3 W 678.4 W 846.8 W
% Max Load 19.5% 40.7% 59.7% 79.8% 99.6%
Room Temp. 46.6° C 46.3° C 49.2° C 47.4° C 49.9° C
PSU Temp. 49.1° C 49.5° C 50.0° C 47.5° C 50.8° C
Voltage Regulation Pass Pass Pass Pass Pass
Ripple and Noise Pass Pass Pass Pass Pass
AC Power 187.2 W 380.3 W 559.4 W 758.0 W 958.0 W
Efficiency 88.5% 90.9% 90.7% 89.5% 88.4%
AC Voltage 117.2 V 115.2 V 112.7 V 110.7 V 108.7 V
Power Factor 0.977 0.992 0.997 0.997 0.997
Final Result Pass Pass Pass Pass Pass

The 80 Plus Gold certification promises efficiency of at least 87% under light (i.e., 20%) load, 90% under typical (i.e., 50%) load, and 87% under full (i.e., 100%) load. The NZXT HALE90 V2 850 W was able to surpass these requirements at high temperatures, which is excellent.

Let’s discuss voltage regulation on the next page.

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Gabriel Torres is a Brazilian best-selling ICT expert, with 24 books published. He started his online career in 1996, when he launched Clube do Hardware, which is one of the oldest and largest websites about technology in Brazil. He created Hardware Secrets in 1999 to expand his knowledge outside his home country.