Corsair HX1000W Testing

Corsair HX1000W PSU, 25% load

Voltage Line	Power Load (Amperes)
3,3V	6
5V	5
12V1	7
12V2	6

3V	5V	12V1	12V2

Corsair HX1000W PSU, 50% load

Voltage Line	Power Load (Amperes)
3,3V	12
5V	10
12V1	14
12V2	12

3V	5V	12V1	12V2

Corsair HX1000W PSU, 75% load

Voltage Line	Power Load (Amperes)
3,3V	12
5V	10
12V1	28
12V2	27

3V	5V	12V1	12V2

Corsair HX1000W PSU, 100% load

Voltage Line	Power Load (Amperes)
3,3V	18
5V	15
12V1	37
12V2	36

3V	5V	12V1	12V2

Corsair HX1000W PSU, 30-100% load voltage regulation test

3V	5V	12V1	12V2

Corsair HX1000W PSU, efficiency graph

Power load	30%	40%	50%	60%	70%	80%	90%	100%
Efficiency	82%	84%	86%	85%	85%	84%	84%	83%

Corsair HX1000W PSU, thermal performance

Load (%)	25%	50%	75%	100%
Intake temperature (Celsius)	24.2	29.1	34.0	38.2
Exhaust temperature (Celsius)	27.1	35.9	40.0	47.3

The electrical performance of the Corsair HX1000W unit is class leading, it is as simple as that. The voltage regulation circuit is rock stable and only very minor voltage fluctuations take place on the two 12V lines, while the efficiency of the unit stays above 82% at all times, even at full load. After testing the peak power output, we found that the unit could run even with a 1200W load when the air intake temperature was nearly 40C. If we go above 1200W load, regardless of the temperature, it will quickly shut down to prevent any damage.

The thermal performance is above average for a unit with this kind of output. The HX1000W is also entirely silent up to 50% load. Between 50% and 80% load it is barely audible and above 80% the unit quickly becomes loud. Having said that, running this unit continuously at 80%+ load is going to require a behemoth of a system.