Power Supplies

Review: Corsair SF450 power supply

Analysis of the Corsair SF450 power supply, with a power of 450W and SFX format for compact format gaming systems.

The evolution of technology has allowed the development of SFX format power supplies. This new more compact format has been developed for small chassis, above all. Corsair has the best catalog on SFX power supplies. The simplest model that we will analyze is the Corsair SF450 that offers 450W of power. It has been developed so that it is completely modular and has 80Plus Gold certification.

Corsair SF450 Features

  • Format: SFX
  • Power: 450W
  • Certification: 80Plus Gold
  • Cabling: 100% modular
  • Fan: 92mm

Corsair SF450 Packaging and Accessories

We see how the box of this power supply comes in a box with the typical black and yellow colors of Corsair. We see on the front and an image of the power supply and on the back we see the characteristics of this source. The rear area features are in six languages, therefore it is a standard box.

Inside the box we find the Corsair SF450 power supply as well as a set of modular cables. The cables of this power supply are flat, to offer a much more efficient management. We also find an instruction manual, power cable and screws and cable ties for installation.

The difference between an SFX source and an ATX is in the dimensions and the pitch. This Corsair SF450 has dimensions of 129x62x99mm and has a net weight of 1Kg. This power supply has an 80Plus Gold certificate that guarantees efficiency. This power supply has 100% Japanese capacitors with a resistance of up to 105º. It also has a 7-year warranty.

Corsair SF450 highlights

We first want to stay with the 92mm fan aspect of this PSU. It makes use of 0dB technology. This causes the power supply to not activate the fan up to a certain load or internal temperature. Normally at low load it does not activate the fan and usually activates at medium load. Corsair has programmed it so that when it reaches 30% load it activates the fan. The fan in question is Corsair's own NR 092L.

Corsair has chosen to develop the power supply with a single 12V rail. So this rail is 37.5A which is equivalent to 450W real. We leave the rest of the data for the other voltages in a table below.

VOLTAGE + 3.3V + 5V + 12V -12V + 5Vsb
INTENSITY 15A 20A 37.5A 0.3A 2.5A
POWER 100w 450w 3.6w 12.5w


Corsair SF450 Wiring

We have previously commented that this font is completely modular. Corsair has implemented enough cables for all the elements that we can install in our system. The cables are also completely flat for a more polished installation and management. The following cables are added:

  • 24-pin ATX
  • EPS / ATX12V 4 + 4-pin
  • Two 6 + 2-pin PCIe
  • Molex Cable
  • 4-pin SATA cable

Corsair SF450 Guards

  • Over Current Protection (OCP): Cuts off the voltage when one or more rails is loaded above the maximum safety level.
  • Over Voltage Protection (OVP): Cuts off the voltage when the voltage exceeds very specific levels specified by the manufacturer.
  • Under Voltage Protection (UVP): Cuts off the voltage when the voltage is below very specific levels specified by the manufacturer.
  • Short Circuit Protection (SCP): Cuts off the voltage when a short circuit is detected.
  • Over Temperature Protection (OTP): Cuts off the voltage when the temperature happens to specific values.
  • Over Power Protection (OPP): Cuts off voltage when total power output exceeds safe levels.


This Corsair SF450 power supply has been developed for mini-ITX chassis systems with compact motherboards and users who want a powerful graphics card. It can easily power a mid-range gaming rig with an NVIDIA GTX 1060 and even a GTX 1070. The two graphics are more than enough to play FullHD and this one has enough power to power them. Without a doubt, an excellent solution for compact gaming equipment.

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Robert Sole

Director of Contents and Writing of this same website, technician in renewable energy generation systems and low voltage electrical technician. I work in front of a PC, in my free time I am in front of a PC and when I leave the house I am glued to the screen of my smartphone. Every morning when I wake up I walk across the Stargate to make some coffee and start watching YouTube videos. I once saw a dragon ... or was it a Dragonite?

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A comment

  1. I have that power supply and the bracket in photo 18 is not included, I even returned it thinking it was wrong and bought another and it did not come.

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