Aereon Asroc ASC-520C Review

Contents

Load Testing

Test 1 (118.46W Load – Cold)

Rail	Load	Voltage	Ripple
12V1	2.47A	12.37V	15.0mV
12V2	2.47A	12.36V	12.6mV
5V	4.99A	4.99V	7.2mV
3.3V	9.91A	3.27V	5.4mV
−12V	0A	−12.03V	5.8mV
5Vsb	0A	5.00V	2.0mV
AC Power	144.61W
Efficiency	81.92%
Power Factor	0.58

Test 2 (204.52W Load – Cold)

Rail	Load	Voltage	Ripple
12V1	4.97A	12.42V	24.2mV
12V2	4.96A	12.39V	22.4mV
5V	9.90A	4.95V	9.4mV
3.3V	9.91A	3.27V	7.0mV
−12V	0.1A	−11.90V	17.2mV
5Vsb	0.99A	4.94V	3.6mV
AC Power	251.53W
Efficiency	81.31%
Power Factor	0.59

Test 3 (263.55W Load – Cold)

Rail	Load	Voltage	Ripple
12V1	7.4A	12.33V	37.8mV
12V2	7.39A	12.31V	37.0mV
5V	9.92A	4.96V	11.4mV
3.3V	9.88A	3.26V	6.8mV
−12V	0.1A	−11.98V	21.0mV
5Vsb	0.99A	4.94V	4.0mV
AC Power	322.08W
Efficiency	81.83%
Power Factor	0.58

Test 4 (322.3W Load – Cold)

Rail	Load	Voltage	Ripple
12V1	9.81A	12.26V	53.8mV
12V2	9.80A	12.25V	50.2mV
5V	9.96A	4.98V	12.6mV
3.3V	9.91A	3.27V	7.2mV
−12V	0.1A	−12.08V	23.6mV
5Vsb	0.99A	4.95V	5.0mV
AC Power	393.25W
Efficiency	81.96%
Power Factor	0.58

Test 5 (378.91W Load – Hot)

Rail	Load	Voltage	Ripple
12V1	12.18A	12.18V	66.6mV
12V2	12.18A	12.18V	65.2mV
5V	9.98A	4.99V	14.2mV
3.3V	9.91A	3.27V	8.0mV
−12V	0.1A	−12.16V	27.4mV
5Vsb	0.99A	4.95V	5.8mV
AC Power	460.0W
Efficiency	82.37%
Power Factor	0.59

Test 6 (433.5W Load – Hot)

Rail	Load	Voltage	Ripple
12V1	14.51A	12.09V	79.0mV
12V2	14,52A	12.10V	77.2mV
5V	10.00A	5.00V	14.6mV
3.3V	9.91A	3.27V	8.6mV
−12V	0.1A	−12.24V	31.4mV
5Vsb	0.99A	4.95V	6.6mV
AC Power	526.74W
Efficiency	82.30%
Power Factor	0.59

Test 7 (487.69W Load – Hot)

Rail	Load	Voltage	Ripple
12V1	16.83A	12.02V	88.8mV
12V2	16.84A	12.03V	86.4mV
5V	10.04A	5.02V	17.2mV
3.3V	9.91A	3.27V	9.6mV
−12V	0.1A	−12.34V	33.6mV
5Vsb	0.99A	4.95V	6.8mV
AC Power	594.31W
Efficiency	82.06%
Power Factor	0.59

Test 8 (513.36W Load – Hot)

Rail	Load	Voltage	Ripple
12V1	19.17A	11.98V	95.4mV
12V2	16.77A	11.98V	93.6mV
5V	10.04A	5.02V	18.0mV
3.3V	9.91A	3.27V	10mV
−12V	0.1A	−12.42V	34.8mV
5Vsb	0.99A	4.95V	7.0mV
AC Power	637.88W
Efficiency	80.48%
Power Factor	0.58

Overload Test (571.71W Load – Hot)

Rail	Load	Voltage	Ripple
12V1	19.33A	12.08V	?
12V2	19.30A	12.06V	?
5V	14.85A	4.95V	?
3.3V	9.85A	3.25V	?
−12V	0.11A	−12.72V	?
5Vsb	0.99A	4.93	?
AC Power	731.3W
Efficiency	78.18%
Power Factor	0.59

The ASC-520C can deliver its labelled rating, but only just. The voltage regulation was acceptable, but I’ve seen better. On the 5Vsb and 3.3V rails, the voltages stayed pretty much constant throughout the testing. The regulation wasn’t so tight on the other rails, although the voltages stayed well within limits at all times. The ripple suppression was average on the 12V rails. Yes, it was still tolerable, but I like to see it stay below half-spec (60mV). On the other rails, it was much better, staying well below half-spec at all times. The efficiency peaked during test 5, at 82.37%, which is very average considering the 230V mains voltage. A similar power supply used in the US with a lower input voltage probably wouldn’t even manage 80% efficiency. When I attempted to overload the unit, it ran long enough to read the voltages and AC power draw, but as I was about to read the ripple, there was a loud pop and it was dead, although there was no fireworks display to speak of.