Gamemax 850 W GX 850GF Gold Full Modular Power Supply

Gamemax GX 850GF is an 850W ATX power supply with 80+ Gold certification and full modularity, aimed at mid-range to high-end gaming and workstation configurations. Thanks to ATX 12V 3.1 and support for PCIe 5.1 with 12V-2x6 connector, it is specifically designed for modern GPUs from series like RTX 40/50. Efficiency above 87% (max. 92%) means less heat loss and more stable operation under load. Combined with Japanese capacitors 105°C and active PFC, you get a power supply that is designed for long-term use, not just to 'get through' the warranty.

What you get is a PSU that comfortably powers a powerful CPU plus a serious graphics card, including models with the new 12V-2x6 connector. With 4 x 8(6+2)-pin PCIe plus a separate 12V-2x6 PCIe 5.x, you have flexibility for both classic 8-pin GPUs and modern cards with a new connector and higher peak loads. DC-DC conversion and LLC & DC-DC technology help maintain stable voltages across different rails, which is important during sudden changes in consumption in games or during rendering. Flat modular cables make cable management easier and improve airflow in the case. Low noise level below 25 dBA and 120 mm ultra-quiet fan with automatic control make the system noticeably quieter at idle and under light load.

• Power 850 W – enough for a strong gaming/work build with a modern GPU and plenty of peripherals, without worrying about shortages under load.
• 80+ Gold efficiency (>87%, max. 92%) – less loss, lower temperature in the case, and lower electricity bill during long gaming sessions or rendering.
• ATX 12V 3.1 and PCIe 5.1 with 12V-2x6 connector – real preparation for modern and future graphics cards, including those with high peak consumption.
• Full modularity and flat cables – you connect only what you need (24-pin, up to 2 x CPU EPS, up to 4 x PCIe, 6 x SATA, Molex), which simplifies assembly and improves airflow.
• Japanese capacitors, main 105°C and MTBF >100 000 hours – designed for long life under real load, not just on paper.
• Multi-level protection (NLO/SIP/OCP/OPP/SCP/UVP/OVP/OTP/OLP) – protects not only the power supply but also the rest of the hardware during network anomalies or problematic components.
• Compact dimensions 150 x 140 x 86 mm and weight 4 kg – standard ATX format with a shorter length of 140 mm, easier to install in more compact cases.
• Noise level <25 dBA and 120 mm fan with automatic control – quiet operation in everyday use, as the fan ramps up only when it really needs to.
• Wide input range 110–240 VAC, 50–60 Hz and active PFC – stable operation at different mains voltages and better power factor correction.
• Warranty 120 months – ten years of coverage, which is a strong indicator of trust in the platform and components.

Who it is suitable for: If you are building a modern gaming machine with a powerful graphics card (including RTX 40/50 series) or a workstation with a more serious CPU and several drives, this 850W Gold PSU gives you stability and current standards without unnecessary extras. It is also suitable if you want to upgrade an old power supply to an ATX 3.x platform and be ready for the next GPU generation. It is not the most sensible choice only if you are doing a very budget build with low consumption, where 850W and ATX 3.1 will be total overkill.

The combination of 850 W power, 80+ Gold efficiency, ATX 12V 3.1 / PCIe 5.1 and ten-year warranty makes Gamemax GX 850GF a very reasonable foundation for a serious configuration that you plan to use for a long time and upgrade with new GPU generations.