Power supply Seasonic FOCUS SGX-750 (750W) 80 Plus Gold SFX PSU, Full Modular - SSR-750SGX

Seasonic FOCUS SGX-750 is a compact SFX power supply with 750 W power, aimed at more serious gaming and enthusiast configurations in small cases. You get high-class efficiency with 80+ Gold certification and up to 90% efficiency, plus a fully modular design for a clean internal look and easy cable management. The SFX format gives you the freedom for a powerful build in ITX or small ATX cases without compromising on connectors. This is one of the power supplies that you can comfortably use in more demanding systems, as long as they are within its specifications.

What you get

With real 750 W available and output lines DC 3.3/5/±12 V, you have a stable foundation for a modern gaming CPU and powerful GPU in an SFF configuration. The four PCI-Express 6+2 pin connectors allow support for one demanding graphics card with two or more power connectors, or more flexible distribution in configurations with additional cards. With 6 SATA and 3 Molex connectors, you can easily power SSDs, HDDs, and peripherals like pumps or fans. The active PFC helps for better stability and cleaner power, especially under heavier loads. The built-in S3FC – Fanless until 30% load logic makes the power supply completely silent under low to moderate load, which is a plus for quiet or home office machines.

• Power 750 W – sufficient for a strong gaming or work SFF build with modern components.
• 80+ Gold certification and up to 90% efficiency – less loss as heat and lower consumption at the same load.
• SFX format – ideal for mini-ITX and compact cases where standard ATX power supplies do not fit well.
• Full modularity – connect only the necessary cables, improving airflow and simplifying assembly.
• 4x PCI-Express 6+2 pin – flexibility for powering a powerful graphics card and future upgrades.
• 6x SATA and 3x Molex – enough connectors for SSDs, HDDs, and peripherals in a more serious home or work build.
• S3FC – Fanless up to 30% load + 92 mm fan – completely quiet in idle/light tasks and controlled temperatures under load.
• Active PFC and gold plated connectors – more stable power supply and better contact over time.

Who it is suitable for

FOCUS SGX-750 is a good choice if you are building a compact yet powerful gaming or creative machine in an SFX case and do not want to compromise on the quality of the power supply. It is also suitable for quiet configurations where the fanless mode up to 30% load matters. If you plan extreme multi-GPU or heavily overkill workstation systems, you might want to look at higher wattages, but for a serious single-GPU build in the SFF class, this is a completely logical choice.

The combination of SFX format, 750 W power, 80+ Gold efficiency, and fully modular, gold plated connectors makes this model a very balanced foundation for a long-term and cleanly assembled compact build.