Seasonic PRIME 750W Gold Power Supply Review

Author:Paul Johnson

Editor:Kyle Bennett

Date: Wednesday, February 28, 2018

Seasonic has been on point with its PRIME power supplies lately on the Titanium and Platinum spectrum. Funny that a "Gold" efficiency PSU from Seasonic seems like a "low end" product, but rest assured, it seems that Seasonic is incapable of producing anything that is low-end now days. Is its new 750 watt PRIME Gold, [H] Gold?


The first thing we are going to look at with the PRIME 750W Gold is its packaging, accessories, and documentation. While normally none of these items is a make or break item for a power supply the packaging quite often contains a lot of information about the product we are purchasing. The inclusion of an owner’s manual that provides actual information about our product is also of great help. Accessories are almost unnecessary with a power supply as the unit is self contained, unless it is modular, but there are cases where a manufacturer can include useful accessories to make installation, routing, and use more efficient.

The PRIME 750W Gold packaging is immediately familiar to anyone who has seen a PRIME unit from Seasonic before. I fact, if you remember the PRIME 1000W Gold then this looks just about identical to for the whole 750W thing (and the way that Seasonic has listed the 10 year warranty on the front here). Once again, the front of the packaging lacks pictures and we are greeted with a geometric pattern trimmed in gold while we only find two points of interest. The first point of interest being the 80 Plus Gold seal and the second being the listing for a 10 year warranty (though listed as 10 years this time as opposed to 7+3 like on the PRIME 1000W Gold). When we flip to the rear of the packaging, we find a bunch of advertising about the unit along with a picture of the power supply and the "Made in Taiwan" stamp like the original PRIME series units. Moving on to the sides of the packaging, we find the power label (reproduced below) and the connector counts (reproduced below). That about wraps up the packaging so let's move on now to those labels now and see what we are looking at.

The PRIME 750W Gold is advertised as being a single 12v rail power supply similar to what we saw from the previous PRIME 750W units we have reviewed. Once more, we see a unit that has a capacity of up to 62A (or ~99% of the unit's capacity) on the 12v rail if necessary. The minor rails (5v and 3.3v) each have a capacity of 20A and the combined capacity of those two rails is 100W. Combined with these outputs, we find that this unit has four PCIe connectors, eight SATA connectors, and three Molex connectors. These values represent a slight reduction in the number of SATA and Molex connectors relative to previous 750W PRIME units we have seen. However, this unit is a bit lower end product and most people probably don't need ten SATA connectors like found on the other 750W PRIME units we have reviewed. However, if you do need ten SATA connectors then, well, the PRIME Ultra 750W might be more of what you should be looking at today!

Once we open the PRIME 750W Gold packaging, we are left looking at the PRIME 750W Gold itself, a power cord, some screws, the modular cables in a pouch, some zip-ties, some Velcro straps, and a pair of user manuals. The user manuals are 20 pages long in 9 languages for one and 40 pages long in 10 languages for the other. The users manuals include installation instructions that are found in the separate installation guide as well as warranty information, troubleshooting steps, and cabling specifications. Let's move on to look at the unit itself now.