Antec High Current Gamer M 620 W Power Supply Review

Ripple and Noise 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 +12VB inputs were connected to the power supply’s single +12 V rail.

Input	Test 1	Test 2	Test 3	Test 4	Test 5
+12VA	4 A (48 W)	9 A (108 W)	13 A (156 W)	17.5 A (210 W)	22.5 A (270 W)
+12VB	4 A (48 W)	9 A (108 W)	13 A (156 W)	17.5 A (210 W)	22 A (264 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 A (5 W)	1.5 A (7.5 W)	2 A (10 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	115.1 W	239.0 W	356.4 W	481.9 W	618.5 W
% Max Load	18.6%	38.5%	57.5%	77.7%	99.8%
Room Temp.	44.6° C	44.8° C	46.3° C	48.1° C	49.5° C
PSU Temp.	44.3° C	44.8° C	45.4° C	46.2° C	50.2° C
Voltage Regulation	Pass	Pass	Pass	Pass	Pass
Ripple and Noise	Pass	Pass	Pass	Pass	Pass
AC Power	135.7 W	277.4 W	418.2 W	575.2 W	759.0 W
Efficiency	84.8%	86.2%	85.2%	83.8%	81.5%
AC Voltage	119.2 V	117.5 V	116.2 V	114.5 V	112.6 V
Power Factor	0.993	0.993	0.995	0.995	0.995
Final Result	Pass	Pass	Pass	Pass	Pass

The High Current Gamer M 620 W passed our tests.

Efficiency was between 81.5% and 86.2% during our tests. The 80 Plus Bronze certification promises minimum efficiency of 82% at full load, but this power supply presented efficiency a half point below this number during our tests. Having this occur during our tests is normal, since the 80 Plus certification tests are conducted at 23° C, and we test power supplies between 45° C and 50° C; efficiency drops with higher temperature.

Voltages were closer to their nominal values (3% regulation) during all tests, except during test one, when the -12 V output was below this tighter range, at -11.63 V, still inside the allowed margin. The ATX12V specification states that positive voltages must be within 5% of their nominal values, and negative voltages must be within 10% of their nominal values.

Let’s discuss the ripple and noise levels on the next page.