Corsair SF1000 (2024) SFX Power Supply: features, specs and who it suits

The Corsair SF1000 (2024), model CP-9020257-NA, is a fully modular power supply in the compact SFX form factor. It is aimed at small-form-factor PCs, where space is tight but the graphics card and processor still need a lot of power. An included bracket also lets it fit standard ATX cases.

What SFX size means for a build

SFX power supplies are noticeably smaller than standard ATX units, which is why they are common in compact cases. The SF1000 measures about 4.9 x 3.9 x 2.5 inches (roughly 12.4 x 9.9 x 6.4 cm) and weighs 2.3 lb (about 1 kg). Corsair says the SFX-to-ATX bracket in the box lets you mount it in a larger case that expects an ATX-sized unit, so the same supply can move between builds.

What 80 PLUS Platinum tells you

The 80 PLUS programme certifies how efficiently a supply converts wall power into the DC power a PC uses. Platinum is one of the higher tiers. In general, a more efficient unit wastes less energy as heat, which can help it run cooler and quieter. Corsair rates this model as 80 PLUS Platinum.

ATX 3.0 and PCIe 5.0 support

Corsair says the SF1000 complies with Intel's ATX 3.0 power standard and is PCIe 5.0 ready. ATX 3.0 was written with modern graphics cards in mind, which can briefly draw much more than their average power. The standard asks supplies to tolerate those short transient spikes. PCIe 5.0 readiness typically refers to support for the newer high-power graphics connector used by current cards. Check which connector your card uses and that the cable set fits it.

Modular cabling for tidy small cases

The supply is fully modular, so you connect only the cables you need. This matters in small cases, where unused cables take up room and block airflow. Corsair lists Type-5 Micro-Fit connectors and describes the cabling as flexible, which typically makes routing in a tight space easier.

Cooling and noise

A 92mm PWM fan with a fluid dynamic bearing cools the unit. Corsair says this gives low-noise operation, and that Zero RPM Mode lets the fan stop completely at low loads. Fan stop modes are usually active only while demand is light; under heavy gaming or rendering the fan will spin up.

Components and warranty

Corsair says the supply is built entirely with 105°C-rated Japanese capacitors, chosen for reliable power under heavy load. A seven-year warranty is listed.

Who it suits

It suits people building a compact PC with a powerful graphics card, and people who want a modern ATX 3.0 supply that is also usable in a larger case. It is more than many ordinary office or light-use machines need.

What to check before you buy

• Case support: confirm your case takes SFX, or that it can use the ATX bracket.
• Power needs: add up the expected draw of your processor and graphics card, with some headroom.
• Graphics connector: check which power connector your card uses and whether the supplied cables suit it.
• Cable length: in a small case, make sure the cables reach the components.
• What's in the box: confirm the bracket and cable set as described in the manual.

The short version

• A compact, fully modular SFX power supply, model CP-9020257-NA.
• 80 PLUS Platinum rated, ATX 3.0 compliant and PCIe 5.0 ready.
• 92mm PWM fan with Zero RPM Mode at low loads.
• 105°C-rated Japanese capacitors and a seven-year warranty.
• SFX-to-ATX bracket included for larger cases.

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