Gamemax Power Supply 850W GX 850G Gold Modular

Gamemax 850W GX 850G Gold Modular is a mid-to-high-end ATX power supply, aimed at modern gaming and powerful workstation configurations. With 850 W power and an 80+ Gold certification, it is designed to stably handle demanding GPU/CPU combinations. Efficiency up to 92% means less heat loss and a quieter operating profile. The modular design gives you freedom in cable management and a cleaner internal airflow.

What you get is a platform with APFC+LLC+DC-DC topology, aimed at stable voltages under load, which is important for sharp spikes from modern graphics cards. The +12 V line provides up to 840 W, sufficient for a serious GPU and multi-core processor without being on the edge. The ATX 3.1 ready design with a native 12V-2x6 (PCIe 5.1) connector is directly prepared for RTX 40/50 series and future cards, without additional adapters. Japanese 105°C capacitors and wireless PCB connections are aimed at a long lifespan and lower electrical noise, while the multi-protection package protects the configuration in case of network issues or component defects.

• 850 W power with a max of 840 W on +12 V provides a solid reserve for high-end GPU and multi-core CPU without the risk of instability during peak consumption.
• 80+ Gold and up to 92% efficiency mean less heat loss, lower power consumption, and a calmer fan in daily operation and gaming.
• ATX 3.1 ready and PCIe Gen 5.0/5.1 support with a native 12V-2x6 (16-pin) connector allow you to connect RTX 40/50 cards directly without additional adapters.
• 135 mm Ultra Silent FDB fan with intelligent temperature control keeps the power supply quiet under light and medium load, and the FDB bearing is optimized for a long lifespan.
• APFC+LLC+DC-DC topology and Active PFC (PF > 0.99) ensure more stable voltages, cleaner power delivery, and better utilization of energy from the grid.
• Japanese 105°C capacitors, two-stage EMI filtering, NTC thermistor and relay increase reliability, protect against spikes, and reduce electromagnetic interference.
• Modular design with embossed flat cables and a rich set of connectors (4x 8-pin PCIe, 2x 8-pin CPU, 6x SATA, Molex, FDD) facilitate clean installation and powering more devices.
• Multi-protection (OPP/OVP/UVP/OCP/SCP/OTP/NLP/SIP/OLP/NLO) protects components from overload, short circuit, overvoltage, overheating, and network anomalies.
• MTBF > 100 000 hours and noise level <25 dBA are indicators of durability and comfortably low noise in a typical load scenario.

This power supply is suitable for a serious gaming build, including with a high-end RTX 40/50 card, as well as for a workstation with many cores and several drives. It is a good choice if you want ATX 3.1 readiness, modular cables, and a balance between price, efficiency, and stability. It is not aimed at extreme enthusiasts with HEDT platforms and multiple graphics cards, where power over 1000 W would be more suitable.

The combination of 850 W, 80+ Gold efficiency, ATX 3.1, and a native 12V-2x6 connector makes it a practical option for modern configurations that you want to keep up-to-date for a long time. This is a power supply that really meets the requirements of modern GPUs without excessive noise and complex compromises.