Specifications

Efficiency is Gold, and, thankfully, Seasonic equipped the PSU with all available protection features including the rare OTP (Over Temperature Protection) feature. Also, the maximum operating temperature at which the PSU can deliver its full power continuously is 50°C, which is what the ATX specification recommends.

The cooling fan is the usual contender: a San Ace 120 from Sanyo Denki. It is a high-quality fan that uses double-ball bearings for additional longevity. The only downside of this fan is its increased noise output at high rotational speeds.

The unit's dimensions are pretty compact for its capacity, and the provided warranty is extra-long, which is only proper for such a high-end product. Finally, the price looks decent given the features of the unit.


The single +12V rail can deliver the unit's full power by itself, so it is strong enough to support a system equipped with two power hungry VGAs. The minor rails have enough capacity for their duties and 5VSB can deliver up to 3 A maximum current output, which will suffice in most cases.

Cables & Connectors, Power Distribution

Contrary to the Corsair AX760, which is based on the same platform and can deliver almost the same power level, the X-750 is missing two PCIe connectors, which leaves it with four such connectors. Nevertheless, it utilizes the same modular PCB as the aforementioned PSU, so you can easily expand its PCIe connectors if you purchase additional cables. The number of the available SATA and peripheral connectors is also great for the capacity of the PSU.

The length of all cables is satisfactory and will suffice, even in a large chassis. Our only objection here is the short distance amongst the PCIe connectors. They should ideally be 2-5 cm longer. Finally, all connectors use 18AWG wires, which is the standard, and all cables except the one holding the 24-pin ATX connector are flat.

Since this PSU features a single +12V rail, we do not have anything to comment on about its power distribution.