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Corsair HXi Series Fully Modular 1000W Power Supply Review

Manufacturer: Corsair

Introduction and Features

Corsair recently released three new HXi Series Fully Modular power supplies: the HX1000i, HX850i, and the HX750i. All three power supplies are 80 Plus Platinum certified and support the Corsair Link digital interface. Corsair continues to offer a full line of high quality power supplies, memory components, cases, cooling components, SSDs and accessories to market for the PC enthusiast and professional alike. In this review we will be taking a detailed look at the HXi Series 1000W fully modular power supply.

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All three of the new Corsair HXi Series power supplies are optimized for silence and high efficiency. Zero RPM fan mode means the fan doesn’t spin until the PSU is under heavy load, and the fan itself is custom-designed by Corsair for low noise operation even at high loads. Flat ribbon-style black cables are fully modular to facilitate fast, clean builds.

The Corsair HXi Series is built with high-quality components, including all Japanese electrolytic capacitors, and is guaranteed to deliver clean, stable, continuous power, even at ambient temperatures as high as 50°C. HXi Series users can also install Corsair Link software to monitor power usage, efficiency, and fan speed.

80 Plus Platinum: High Efficiency – Low Heat HXi Series PSUs are 80 Plus Platinum certified, making them among the most efficient on the market. With efficiency of at least 92% at 50% load, your PC will remain cool and quiet, potentially saving money in the process.

Corsair Link Ready While the HXi is an analog power supply, it features a built in analog to digital bridge to communicate vital information to the Corsair Link software via USB. This allows the user to monitor and log fan speed, current and voltage of the +3.3V, +5V, and +12V rails, monitor power out, display power in and efficiency, and enable/disable OCP on the +12V rails.

Zero RPM Fan Mode offers silent operation at low to moderate loads. Thanks to a highly efficient design, the HXi Series power supplies generate minimal heat and are able to operate in a silent, zero RPM Fan Mode for up to 40% of the PSU’s maximum load (at 25°C room temperature). This means the HXi power supply can be completely silent while the PC is performing less intensive tasks. As the load and temperatures rise within the PSU, the thermally controlled fan gradually spins up for quiet operation even during more demanding computing.

Optimized for Low Noise Corsair continues to branch out beyond memory and power supplies and is paying close attention to fans and their applications. Within a PSU, the most important feature of a fan is high static pressure, allowing the fan to push air through the relatively high density of components. The NR135P intake fan was specifically designed to move more air through the power supply components with less noise. Fan blades are properly balanced to prevent resonance at higher RPMs and the fan features fluid dynamic bearings for quiet operation and long life.

In addition to the specially designed Corsair cooling fan the components on the HXi Series PCB are laid out to allow air to easily flow between them. The HXi PSUs also include fully modular cables made flat for easy installation and reduced airflow resistance.

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Corsair HX1000i PSU Features summary:

•    1,000W continuous DC output (up to 50°C)
•    7-Year Warranty and Comprehensive Customer Support
•    80 PLUS Platinum certified, at least 92% efficiency under 50% load
•    Corsair Link ready for real-time monitoring and control
•    Fully modular cables for easy installation
•    Flat ribbon-style, low profile cables help optimize airflow
•    Zero RPM Fan Mode for silent operation up to 40% load
•    Quiet fluid dynamic fan bearing for long life and quiet operation
•    High quality components including all Japanese electrolytic capacitors
•    Active Power Factor correction (0.99) with Universal AC input
•    Safety Protections : OCP, OVP, UVP, SCP, OTP, and OPP
•    MSRP for the HX100i : $229.99 USD

Please continue reading our review of the Corsair HX1000i PSU!!!

PSU Testing Methodology

Establishing an accurate load is critical to testing and evaluating a PC power supply.  PCPerspective’s power supply test bench can place a precise DC load on the PSU under test.  Each power supply is tested under controlled, real-world conditions up to its maximum rated load (at 40ºC), using both 115 VAC and 240 VAC line voltage.  Our current suite of tests includes:

•    DC Load Regulation
•    AC Ripple and Noise
•    Efficiency
•    Differential Temperature
•    Noise

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The Corsair HX1000i power supply was evaluated on both features and performance.  A full range of equipment was used to test the power supply under controlled load conditions.  

•    (2) CSI3710A Programmable DC load (+3.3V and +5V outputs)
•    (4) CSI3711A Programmable DC load (+12V)
•    (3) 218W Precision resistor load bank (+12V)
•    Switchable precision resistor load bank (-12V and +5VSB)
•    Agilent 34401A digital multimeter (Accuracy ±0.0035% vDC)
•    Extech 380803 Power Analyzer (Accuracy ±0.5% of full scale)
•    DS1M12 "StingRay" digital oscilloscope (20M S/s with 12 Bit ADC)
•    Powerstat Variable Autotransformer, 1.4 KVA, 0-140 VAC
•    Extech Model 407738 digital sound level meter (Accuracy ±1.5 dB)

The following cables/connectors were used to connect the HX1000i to the PCPerspective power supply test equipment.
•    (1) 20+4 pin ATX
•    (2) 8-pin EPS/ATX12V
•    (8) 6-pin PCI-E
•    (2) SATA
•    (2) Molex

Video News

October 10, 2014 | 11:08 AM - Posted by Anonymous (not verified)

I love those reviews where the manufacturer is sending their own product directly. I used to be a prostitute before, sorry, journalist, and this is always the same song. One bad review, and you stop receiving samples. Period. Only real reviews would be if the reviewer spent the website money on this, to be relevant and 100% fair. Anything else is just an extension of a press release. But good job, you should get your RGB keyboards soon to play around with... And maybe they won't ask the sample back... LOL. What a "life".

October 10, 2014 | 11:49 AM - Posted by Ryan Shrout

October 10, 2014 | 06:13 PM - Posted by Anonymous (not verified)

This is yet another reason why I follow PCPer :)

October 11, 2014 | 12:30 PM - Posted by SeaJay (not verified)

Granted, that guy was a dick and didn't deserve a serious response, but let's be honest, this "review" was not a review, it was an advertisement. It did not contain a single sentence of criticism or personal opinion.

JonnyGURU's review of the HX1000i:

"Corsair Link, seven year warranty, 80 Plus Platinum... we already know all this stuff."

"Ok... I have to ask. Why on earth does this thing come with three Molex chains? Who is ever going to need twelve Molex connectors? Is it 2004 again? This unit could be better served by four SATA chains and two Molex ones. I'm going to deduct something off the score for this one, I think."

"Hmm... once again, we find that Corsair Link is not able to give us entirely accurate results on either the minor rail loads, the power draw, or the power output. I expect we'll find accuracy improving on those last two items as we go up in power, but it's interesting to me that we now have seen two HXi units fail to keep proper tabs on the minor rail current draw. I'm not too put off by that, however, as you simply cannot get true accuracy on anything costing less than a small fortune."

"Are these the best looking shots I've ever seen? No, they aren't. There's a small spike on the 5VSB rail at power up, while the 12V side of the unit seems like it takes a little time to come up to full power."

"EVGA has been stomping all over everybody lately when it comes to value, and we find their P2 1kW unit sitting at thirty dollars cheaper than this one. Even Seasonic has a Platinum unit this size for cheaper, though only by ten bucks. In fact, there are only two units more expensive than this one, and not by a lot: the Antec HCP-1000 and Enermax Platimax 1kW. Both of them are ten dollars more than this one. Corsair, I think you need to get this price down some yet."

This is what a review sounds like. Even on a really good unit like the HX1000i, there are always things to pick at. A good reviewer should always try to find these and mention them.

JonnyGURU gets free samples from Corsair as well, so what's with this softball bullshit? If you're going to be paid by Corsair to put up an overview of one of their products, that's fine, just mark it as a sponsored article and don't label it as a review.

October 10, 2014 | 02:56 PM - Posted by Anonymous (not verified)


So true.

October 10, 2014 | 10:35 PM - Posted by Mike Ciletti (not verified)

What nonsense. I've seen a lot of reviews both here and on other pro-sites that were quite harsh.

PcPer, as always....great job!

October 10, 2014 | 01:32 PM - Posted by Anonymous (not verified)

What is the benefit of super good voltage regulation? For instance the ax1500i had a voltage regulation of ±0.1%. How is that more beneficial in a real world sense than the hx1000i's ±2%?


October 10, 2014 | 01:52 PM - Posted by Anonymous (not verified)

I wouldn't allow anonymous comments.

-- Anonymous

October 11, 2014 | 03:11 AM - Posted by Cyclops

An almost Arc weld ready power supply.

October 11, 2014 | 03:12 AM - Posted by Cyclops

Thanks internet explorer!

October 11, 2014 | 09:40 AM - Posted by magoo (not verified)

Yeah.....but does it blend?

I'd like to see some comment about what you don't like.

This is common on JonnyGuru and HARDOCP reviews.

October 11, 2014 | 02:58 PM - Posted by PhoneyVirus

After the experience I had with Corsair AX860i and their Corsair Link was noting more then a nightmare. No review will cover what I had to go through with their software and ASUS Software bundle that came with Maximus VII Hero motherboard, put it this way I'll never purchase another Corsair or Asus Product again, and no I don't care what kinda of rep they have.


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