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Corsair RM1000x 1000W 80 PLUS Gold Power Supply Review (Page 4)

By: Zac O'Vadka from Oct 1, 2015 @ 19:23 CDT
TweakTown Rating: 93%Manufacturer: Corsair

Our Testing Method and Test Results

Our load tests utilize a couple of FAST ATE active load testers, and a variety of other equipment such as an oscilloscope, power conditioner, temperature probe, and a power consumption meter. You can read more about our standard testing approach here.

The tests performed are based around six conceivable setups that are out there, and progressively load down the PSU up to the power supply's limits, or 1000W; whichever comes first. Since our test equipment's limits are equal to that of the Corsair RM1000x power supply, we can test it to its maximum.


The above tests represent typical loads that we have measured from various systems and are meant to give a rough idea of where your computer might fall in line with our tests. Please keep in mind that each system is different, and actual loads can vary greatly, even with similar hardware.


Let's start by taking a look at the voltages, to see how well this unit did during testing. Starting with the 12V rail, we see 1% regulation from start to finish, with a total drop of .06V. The 5V rail managed to stay within 2% of specification, with a total drop of .03V from start to finish. Moving towards the 3.3V rail, we see that regulation was within 2% of specification, with a total voltage drop of .03V.

DC Output quality for the Corsair RM1000x was excellent and well within specifications. During Test One, we saw 4mV of noise on our scope at 22% load. When we increased the loads in Test Three, the ripple climbed to 9mV at around 56% load. Increasing loads even further showed that the noise on the 12V rail climbed to 14mV at 1000W.

The Corsair RM1000x 1000W power supply is rated for 80 PLUS Gold efficiency. This means that the power supply must perform at 87% / 90% / 87% efficiency, at 20% / 50% / 100% loads respectively. As you can see, the Corsair RM1000x performed exactly as would be expected to reach these levels of efficiency.

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