Corsair's close cooperation with CWT continues its successful course by producing such excellent products as the one I reviewed today. The HX750i is very efficient, stable, and devoid of ripple; it will save you money spent on your electricity bill and will ensure your system operates safely and reliably, especially if you need to overclock components. Clean power means the DC-DC converters on the mainboard, VGAs, and other components have less ripple to deal with, which results in a cooler operation and boosts the lifetime of filtering capacitors and other components. The HX750i is also very quiet, and its fan won't spin up at all with light loads unless you modify the fan-speed profile in Corsair Link. Speaking of the latter, the digital interface is fully compatible with Corsair Link, so you do have a ton of information about the PSU's operation at your fingertips if you so desire. The HX750i is not a fully digital unit, so analog circuits still take care of its operation, but such isn't a problem given its high performance. A fully digital platform would also cost much more to implement. However, you can go with the AX760i if you need a fully digital design, and while the latter performs a bit better, most user won't even be able to tell the difference.

Nothing is perfect, so I did spot a few drawbacks. For starters, I would like a nicer graphical interface with, why not, two options, basic and advanced, for the Corsair Link application. I would also like the application to be more stable, without a required restart whenever the PSU loses its communications link to the system. The distance between peripheral connectors is also too small should you want to connect case fans to these, as most components powered by these connectors are placed pretty far apart. I also found a screw inside my PSU, which spoiled the overall impression I had of the unit. It was probably dropped there by someone since no screw was missing; however, such is no excuse since even a small screw can damage a PSU's internals horribly, especially if it shorts something in the primary side. I am sure I was unlucky as far as the screw is concerned, but am going to deduct some build-quality points for it. I also had trouble fitting the 24-pin ATX connector to my testing board. It was a really tight fit, and I had to push it all the way down for its clip to snap into place. This is an easy fix since the cable is modular, so you could just ask Corsair to send you another should you run into a similar problem. I would also like the fan to spin up at lower operational temperatures in the unit's default configuration to avoid excess heat build-up internally. Corsair and CWT must be dead-sure about this platform's tolerance to heat given its seven year warranty, but its fan is very quiet, so having it spin up a little sooner wouldn't really affect the unit's average noise-output figure.

To conclude, this is very good PSU despite the two notable build-quality problems I faced (a free screw internals and its tightly fitting 24-pin ATX connector). I may have been incredibly unlucky, but as it stands, I prefer such things to happen to me rather than you since many lack the experience to deal with such problems and no one should crack the PSU open to remove a loose screw. The HX750i offers exceptional performance levels that match those of the AX760i and costs significantly less. If you are out for a truly silent high-end PSU with enough power to feed multiple VGAs and other strong components, you should definitely consider a HXi unit. Weren't it for the problems I described above, this specific unit would easily get an Editor's Choice award from me.