Given Corair's highly successful RMx power supplies, which lack the digital interface found on all RMi models and use a different fan to bring costs down, the company thought to do something similar with its high-end HXi family. But instead of naming the new line HXx, which would have looked strange, Corsair simply removed the letter "i." After all, there was already a portfolio of HX PSUs. Now it's revamped with new members.
The HX line-up includes four models with capacities ranging from 750W to 1200W. The biggest difference between Corsair's HXi and HX models, besides the latter's lower price, is the lack of software control/monitoring, since a digital interface circuit is missing from the HX family. Both the HXi and HX PSUs use the same 135mm FDB fan. It's incredibly quiet, even at high speeds, so we expect these lower-cost models to still feature great acoustic profiles under any circumstance.
High performance. Premium components. Low noise. Bold words, and they'd best be worth something if Corsair wants a good score later on. This unit competes against the likes of the EVGA P2 units and Seasonic Prime Titaniums, and I have high hopes for it indeed. There's not too much to this side of the box that we don't already know, but there are a few fresh bullet points the front of the box didn't mention. Like the depth of the unit (which is actually wrong, by the way - it's 200mm). We also have some fan curve and efficiency graphs and a load table.
This is close to the top of Corsair's product range, with only the HXi and AXi units above. As is fitting for its place in the market, it comes with Platinum efficiency certification and a ten year warranty. Of course, there's some marketing on the front of the box like mentions of Japanese capacitors, a fanless mode, and superior voltage regulation, but this is all something we've come to expect at this level of the market. It's then up to people like me, my forty imaginary friends, and my load testing gear to make sure this unit meets with our expectations.
As mentioned, there is a switch that lets you choose between one +12V rail or multiple ones. In the HXi models, this is achieved using the Corsair Link software. However, since the HX models don't have a digital interface, a different approach had to be used.
The +12V rails can deliver up to 40A each if the multi-rail mode is selected. According to Corsair, each individual connector in this PSU has over-current protection, so no more than 40A goes through any given cable.
- 80 PLUS Platinum efficiency, delivering 90% energy efficiency at real world load conditions.
- ZeroRPM mode for fanless operation at low loads and outstanding noise reduction.
- 135mm thermally controlled, fluid dynamic bearing fan only spins up as needed.
- Fully modular cables for easy installation, less clutter, and helps maximize airflow through your computer’s chassis.
- Engineered to meet maximum power output at a server-grade 50°C temperature rating.
- Over-voltage protection, under-voltage protection, short circuit protection, over power protection, and over temperature protection provide maximum safety to your critical system components.
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