The SX650-G is a fully modular SFX PSU with 80 PLUS Gold and ETA-A efficiency certifications. With 650W of capacity and four PCIe connectors, it easily supports high-end gaming PCs.

The SX650-G is a small form factor power supply that crams tons of capacity into its SFX chassis. SilverStone has lots of experience building compact, powerful PSUs, and this particular model wields four PCIe connectors able to support two high-end graphics cards. Despite its diminutive dimensions, the SX650-G sports a 92mm fan, which is as large as an SFX enclosure accommodates. This keeps it as quiet as possible under light and moderate loads. Of course, once you really tax the SX650-G, its fan has to spin up to keep the internals cool. At that point, it gets pretty loud.