Seasonic X Series 750W Power Supply Review

Specifications and Packaging

The Seasonic X Series 750W power supply is rated for a combined, continuous output power of up to 750 watts at 50°C operating temperature (internal case air temperature).  That’s important, as some less reputable manufactures limit their power supply’s advertised capacity by specifying a lower operating temperature (25°C) in the fine print. 


The PSU includes universal AC line input (automatically adjusts to the AC line voltage) and active PFC, which makes the unit more environmentally friendly to the local power grid.  The Seasonic X Series 750W features a single +12V rail that can deliver up to 62A (744W) of power; almost the entire capacity of the unit. 

Specifications from the Seasonic X Series Owner’s Manual:


Packaging and Parts

The Seasonic X Series 750W power supply comes securely packed inside a large retail box that highlights the unit’s main features and specifications.  The power supply itself is enclosed in a black velvet bag with a gold Seasonic logo.  In addition to the power supply the package includes a power cord, mounting screws, modular cables, Seasonic case badge, and a multi-language Owner’s Manual.


The 13 modular cables come neatly packed inside a black nylon storage pouch.