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Corsair HX1000i 1000W 80 PLUS Platinum Power Supply Review

By: Zac O'Vadka | 80 PLUS Platinum PSUs in Cases, Cooling & PSU | Posted: Feb 26, 2015 11:14 pm
TweakTown Rating: 93%Manufacturer: Corsair

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 lower than that of the Corsair HX1000i 1000W 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 2% regulation from start to finish, with a total drop of .16V. The 5V rail managed to stay within 1% of specification, with a total drop of .06V 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 .04V.


DC Output quality for the Corsair HX1000i was excellent, and well within specifications. During Test One, we saw 12mV of noise on our scope at 22% load. When we increased the loads in Test Three, the ripple climbed to a mere 22mV at around 56% load. Increasing loads even further showed that the noise on the 12V rail climbed to 31mV at 1000W.


The Corsair HX1000i is rated for 80 PLUS Platinum efficiency. This means that the power supply must perform at 90% / 92% / 89% efficiency, at 20% / 50% / 100% loads respectively. As you can see, the Corsair HX1000i is performing exactly as would be expected to reach these levels of efficiency.



Final Thoughts


It goes without saying that Corsair has some of the best power supplies on the market. The AX1200i and AX1500i power supplies have redefined what it means to be the best of the best, and they have proven to be the closest we have ever seen to being a perfect power supply. The problem with this is that it costs a lot of coin to get your hands on the best of the best. The HXi series from Corsair bridges the gap and provides an excellent blend of price, performance, and new technology.


The HX1000i performs exactly as you would expect when you combine new tech with great performance, while keeping the price down. Voltage regulation stays within 2% for the 12V and 3.3V rails, while staying within 1% of specifications for the 5V rail. DC output quality comes in very good and shows only 31mV of noise on the 12V rail. The efficiency for the HX1000i is exactly where it should be for an 80PLUS Platinum rated unit.


The big score for this unit is the price combined with the digital monitoring that it offers. With an MSRP of $229.99, it is very competitively priced with other 1000W Platinum rated units. Add in the digital monitor that is provided by the Corsair Link software, and this unit scores a clear win above almost all of the competition. Corsair sweetens the deal even more by providing a seven-year warranty on the unit, so while this may not be the absolute greatest power supply available, it is certainly one of the best that you can get given the price.



PRICING: You can find the Corsair HX1000i High Performance Power Supply for sale below. The prices listed are valid at the time of writing but can change at any time. Click the link to see the very latest pricing for the best deal.


United States: The Corsair HX1000i High Performance Power Supply retails for $199.99 at Amazon.


Canada: The Corsair HX1000i High Performance Power Supply retails for CDN$273.00 at Amazon Canada.

Product Summary Breakdown

TweakTown award
Quality including Design and Build95%
General Features93%
Bundle and Packaging92%
Value for Money95%
Overall TweakTown Rating93%

The Bottom Line: Corsair's HX1000i is a great buy for enthusiasts wanting a power supply that performs very well and provides some of the latest features without completely breaking the bank in the process.

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