Introduction

We would like to thank Corsair for supplying the review sample.


The Corsair SF750 is the strongest SFX power supply money can buy today. At 750 W, its power density is ultra-high, capable of supporting a very strong system equipped with power hungry components. Its main competitor is the SilverStone SX700-G, which has 50 W less power output and fails to perform as well in nearly every major way (load regulation, ripple suppression, and transient response).



Thus far, Corsair has had a great cooperation with Great Wall, the manufacturer behind the entire SF line. Before the release of the SF750, the SF450 and SF600 Platinum had been introduced, making the competition feel awkward. With the SF750, Corsair's SFX line is now complete, currently dominating this market in terms of performance while even managing to keep output noise low. High performance in tandem with low noise output is very difficult to achieve, especially in small form factor power supplies.

Specifications

Besides an 80 PLUS Platinum certification, the SF750 has also been certified by Cybenetics, achieving ETA-A and LAMBDA-A- certifications in efficiency and noise respectively.

Cables and Connectors

There are two EPS and four PCIe connectors, of which all are capable of handling the unit's full power. The number of peripheral connectors is adequate, and the distance between connectors is satisfactory since this unit will probably be installed into a small chassis.


Corsair should in my opinion also sell a version of this unit with longer cables since a PSU with such high power output can also be used in a larger chassis with more system components because of the included SFX-to-ATX adapter.

Component Analysis

The Great Wall platform uses high quality parts, including Chemi-Con, Rubycon, and Nichicon caps. The primary side uses a half-bridge topology along with an LLC resonant converter.


On the secondary side, six FETs regulate the +12V rail, while the minor rails are handled by a couple of DC-DC converters. A PIC controller handles the fan-speed profile, allowing for more precise control.