Best SFX PSU 2023

SilverStone SX700-PT
SilverStone SX700-PT (Image credit: Rich Edmonds / Windows Central)

Anyone looking to build a compact computer with a small form factor will need to consider the size of their power supply. Compared to your average ATX PSU, SFX power supplies are slimmer and smaller, perfect for saving space. If that sounds like something you need, check out our roundup of the best SFX PSUs available below.

Choosing the best SFX PSU

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Just because they're smaller, it doesn't mean SFX power supplies are any weaker than their full-sized ATX variants. Generally designed for more compact cases, it is possible to mount an SFX PSU with an adapter into an ATX case. Besides their physical size, they do the same job: provide your components power at whatever total wattage they need. It's worth double-checking your case requirements because SFX power supplies are usually only ever selected for the tiniest builds.

Once you've decided on which PSU standard is best for your PC, you'll be able to choose which is best for you. Our collection of the SFX styles is well suited for a small form factor PC, and there are plenty of other size choices when looking for the best power supply in general.

Ben Wilson
Channel Editor

Ben is the channel editor for all things tech-related at Windows Central. That includes PCs, the components inside, and any accessory you can connect to a Windows desktop or Xbox console. Not restricted to one platform, he also has a keen interest in Valve's Steam Deck handheld and the Linux-based operating system inside. Fueling this career with coffee since 2021, you can usually find him behind one screen or another. Find him on Mastodon to ask questions or share opinions.