Corsair SF450 (2018) 450W SFX Power Supply Review

The Corsair SF450 SFX is, as you might have guessed from the "SFX" part number, a computer PSU built specifically with small form factor systems in mind. Corsair promises high power density along with "low noise," which are two qualities that many SFF builders are likely looking for. It also brings has Platinum level efficiency and is fully modular.


Corsair is known in enthusiast circles as a supplier of high performance memory and has risen to become one of the most talked about power supply brands around. Corsair was initially able to establish a presence in such a short time through the use of quality OEMs (Seasonic and CWT), rigorous standards, and excellent support. Since its entrance into the PSU field, it has established a number of lines of power supplies of varying quality to address (and overlap) just about every market segment. Today, we have another unit from Corsair's SFX product line (SF) to look at; the SF450 2018 (CP-9020181-NA). This unit is once more produced in conjunction with Great Wall.

China Great Wall Computer Group Co. Ltd., a subsidiary of China Electronics Corporation, is a name that is not that well known to our North American readers. Great Wall was founded in 1986 and currently operates a number of companies producing products including power supplies, monitors, laptops, memory, flash products, and a laundry list of other PC and technology related products. In the power supply field, Great Wall is currently one of the largest suppliers of power supplies in the Chinese market. Its presence in North America, however, is very limited and one of the few brands we have seen using Great Wall products so far is OCZ and now Corsair.

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This Ship Is So Small You Can Sail it in Puddles

As we said when we recently saw the Corsair SF600 (2018), the SFX form factor has been around for a very long time. However, Corsair has not been active in this segment until recently and they are going to be going head to head with brands who have made a real name for themselves in this sector (like SilverStone). So, Corsair has a bit of an uphill climb in this market segment. Today, we are seeing Corsair's second take at the SF450, but it is the first time we have seen this product (while previously we have seen two different versions of the SF600). The SF600 units were interesting because they had sufficient capacity to power a true enthusiast system, the SF450 (2018) is a bit light in that regard. That said, many enthusiasts also have HTPCs or a file server or various types of SFF systems where such a unit might be at home. So then, we will give this unit a go and see if the SF450 the equal of its larger sibling. Before we move on to do that, let's see what Corsair has to say about this unit:

CORSAIR SF Series SFX power supplies offer all the low-noise performance of an elite 80 PLUS Platinum PSU, ready to power the world’s best small form factor PCs.

That was underwhelming. Let's just move on to see what we can expect when a user purchases the Corsair SF450 2018 power supply in retail in terms of documentation, accessories, cable count, rail layout, output characteristics, and general build quality.