When building a high-performance gaming PC, workstation, or even a premium multimedia rig, the power supply (PSU) is the unsung hero that ensures stable and efficient power delivery. A 850W PSU strikes an ideal balance between power capacity and versatility, supporting high-end components like the latest NVIDIA RTX 40-series or AMD Radeon GPUs, multi-core CPUs, and multiple storage drives. But with countless options on the market, how do you choose the best one? In this guide, we’ll explore the top contenders from GameMax’s lineup, highlighting key features, performance metrics, and which PSU suits your specific needs.
Before diving into recommendations, let’s outline the critical factors to consider:
Efficiency Certification: Look for 80 Plus Gold or higher (Platinum) to minimize energy waste, reduce heat, and lower long-term electricity costs.
Modular Design: Fully or semi-modular PSUs let you use only the cables you need, improving cable management and airflow.
ATX Version & Compatibility: Ensure support for ATX 3.1 and PCIe 5.1 to future-proof your build for next-gen components.
Cooling & Noise: Low-noise fans (like FDB or ARGB fans with adaptive control) keep your system quiet under load.
Durability: High-quality capacitors (Japanese or premium Taiwanese), over-voltage/over-current protection, and robust build quality are essential for longevity.
Power & Efficiency: 850W, 80 Plus Gold certified (90%+ efficiency at typical loads).
Key Features:
ATX 3.1 & PCIe 5.1 Ready: Native 12V-2x6 connector for direct RTX 40-series GPU support, eliminating adapter needs and reducing power loss.
Adaptive ARGB Fan: 140mm fan with RGB SYNC for customizable lighting effects, paired with intelligent speed control to balance noise and cooling.
Fully Modular Design: Clean cable management with flat cables, ideal for showcasing a tidy build in transparent cases.
Advanced Circuitry: LLC+DC-DC topology ensures stable voltage output and low ripple noise, critical for sensitive components.
Ideal For: Gamers using high-end GPUs (e.g., RTX 4080, RX 7900 XT) who want both performance and aesthetic appeal.
Power & Efficiency: 850W, 80 Plus Gold certified (90% efficiency via APFC+LLC+DC-DC design).
Key Features:
Silent Cooling: FDB (Fluid Dynamic Bearing) fan operates at whisper-quiet levels, even under heavy loads, thanks to adaptive speed control.
Premium Durability: Japanese capacitors and a single +12V rail deliver consistent power, while over-voltage/over-temperature protection safeguards your system.
Modular Design: Semi-modular cables reduce clutter without compromising on connectivity, suitable for mid-to-high-end builds.
ATX 3.1 Ready: Future-proof for upcoming components, though lacks native PCIe 5.1 (uses adapters for older GPUs).
Ideal For: Users prioritizing silent operation, such as content creators or 深夜 gamers, who need reliable, long-lasting performance.
Power & Efficiency: 850W, 80 Plus Gold certified (92%+ efficiency with LLC & DC-DC technology).
Key Features:
Compact Design: Shorter chassis (140mm depth) fits seamlessly into mini-ITX or micro-ATX cases without sacrificing power.
Fully Modular & Flexible: Slim cables and a dense component layout make it easy to manage in tight spaces.
Quiet FDB Fan: Low-noise operation with heat-optimized fan curves, keeping your SFF build cool and silent.
Single +12V Rail: Maximizes power delivery to high-demand components like CPUs and GPUs.
Ideal For: SFF enthusiasts or builders who want a powerful yet space-efficient PSU for compact gaming rigs.
Power & Efficiency: 850W, 80 Plus Gold certified (90% efficiency), SFX form factor.
Key Features:
Ultra-Compact Design: SFX size (125x100x63.5mm) perfect for mini-ITX cases or small servers, without compromising on wattage.
Japanese Capacitors & Intelligent Cooling: High-quality components ensure stability, while the smart fan adjusts speed based on load, keeping noise below 20dB at idle.
Comprehensive Protection: Over-voltage, over-current, short-circuit, and over-temperature protection for peace of mind.
Modular Cables: Customizable connectivity for tiny builds where every millimeter matters.
Ideal For: Builders of mini-ITX systems, HTPCs, or compact workstations who need high power in a small package.
Power & Efficiency: 850W, 80 Plus Gold certified (90%+ efficiency).
Key Features:
ARGB Sync Fan: 140mm fan with vibrant RGB lighting that syncs with motherboard software, adding a splash of color to your build.
Fully Modular: Flat cables for easy routing, reducing clutter and improving airflow in mid-tower cases.
Stable Performance: LLC+DC-DC topology ensures clean power delivery, suitable for mid-to-high-end GPUs like RTX 30-series or RX 6000-series.
Affordable Premium Features: Balances cost with performance, offering RGB lighting and modularity at a competitive price point.
Ideal For: Gamers on a budget who want a reliable PSU with aesthetic flair, without overspending on extreme power features.
High-End Gaming/Workstation: Prioritize RGB PRO 850G or GX PRO 850G for PCIe 5.1 support and robust power delivery.
Small Form Factor/SFF: Opt for GX 850GF (modular ATX) or GS 850G (SFX) for compact efficiency.
Silent Operation: GX PRO 850G or GS 850G feature low-noise fans and premium cooling designs.
Budget & Aesthetics: RGB 850G offers Gold efficiency and RGB lighting at a mid-range price.
A 850W PSU is a versatile choice for most high-performance builds, offering enough headroom for current and future components. GameMax’s lineup stands out for its combination of efficiency, durability, and innovative features like PCIe 5.1 support, ARGB lighting, and compact designs. Whether you’re building a silent workstation, a flashy gaming rig, or a space-saving SFF PC, there’s a GameMax 850W PSU tailored to your needs. Invest in a quality power supply today to ensure your system runs smoothly, efficiently, and reliably for years to come.
The GameMax GX 850GF Modular Power Supply, 80+ Gold certified, offers top-tier performance in a compact package. Key features:
• High Efficiency: Over 92% efficient with LLC & DC-DC technology for energy savings.
• Silent & Cool: FDB fan for whisper-quiet operation and effective heat dissipation.
• Modular Design: Easy cable management for a cleaner build and improved airflow.
• Stable & Durable: All-solid capacitors and SMT components ensure long-lasting reliability.
• Broad Compatibility: Supports latest graphics cards and full voltage input range.
• Protection: Seven levels of safeguards protect your system from harm.
GameMax RGB 850G Fully Modular Power Supply
• 80+ Gold Certified Efficiency: Achieves 90% efficiency or higher under typical loads, ensuring lower power consumption, reduced noise, and cooler operation.
• 140mm ARGB Fan with Sync: Delivers vibrant lighting effects and supports synchronization with ASUS, GIGABYTE, MSI, and ASRock RGB motherboards for customizable illumination.
• Fully Modular Design: 100% wireless internal PCB layout eliminates cable clutter for improved airflow and aesthetics.
• Enhanced Stability & Reliability: Powerful single +12V rail with high-quality Japanese capacitors ensures stable power delivery to graphics cards and PC components.
• Advanced Protection & Ultra-Quiet Operation: Includes OPP/OVP/UVP/SCP/OCP/SIP safeguards, paired with a whisper-quiet 140mm fan for optimal cooling and minimal noise.
RGB PRO 850G 850W 80+ Gold ATX3.1 Power Supply with Adaptive Fan & ARGB SYNC
• 80 Plus Gold Efficiency: Delivers 90%+ efficiency under typical loads, cutting power use and noise for dependable performance.
• ATX3.1 & PCIe5.1 Support: Native 12V-2x6 connector ensures seamless power to RTX 40/50 GPUs, optimizing delivery and reducing loss.
• Adaptive Fan Control: 14CM fan auto-adjusts speed based on load, balancing energy efficiency with quiet operation.
• High-Quality Components: Japanese 105°C and solid capacitors guarantee durability, stability, and reliability for intensive tasks.
• Customizable RGB Lighting: 25 lighting modes with memory and ARGB SYNC support, enabling personalized and synchronized visual effects.
GS 850G 80 Plus Gold Certified SFX Power Supply with Intelligent Cooling, Japanese Capacitors, and Comprehensive Protection
• 80 Plus Gold Certified Efficiency: Enhances power efficiency and stability, reducing the risk of system crashes.
• High-Quality Japanese Capacitors: Ensures long-term reliability and stability with 105°C electrolytic and solid-state capacitors.
• Intelligent Fan Control: 9.2cm hydraulic bearing fan with PWM automatic control starts and stops based on power consumption (above 20% and below), optimizing cooling and noise.
• Advanced Wireless Output Design: Gold-plated pins and high-density copper posts enable efficient, reliable power output and improved heat dissipation.
• Comprehensive Circuit Protection: Provides multi-layered protection (OPP, OVP, UVP, OCP, SCP, OTP) to safeguard your PC and components from damage.
GX PRO 850G 80 Plus Gold Modular Power Supply: ATX3.1 Ready, Silent Cooling, & Premium Durability
• 80 Plus Gold Efficiency & Quiet Operation: Achieves 90% efficiency under typical loads with APFC+LLC+DC-DC design, minimizing power waste and noise.
• Premium Durability & Reliability: Built with Japanese 105°C capacitors and solid capacitors for long-term stability and performance.
• ATX3.1 & PCIe5.1 Ready: Features a native 12V-2x6 connector for seamless RTX 40/50 GPU compatibility and efficient power delivery.
• Advanced Thermal Management: 13.5cm FDB fan with intelligent temperature control ensures quiet cooling and optimal heat dissipation.
• Modular Design & Robust Protection: Fully modular layout with dual-stage EMI filtering and NTC thermistor safeguards against surges, while gold-plated cables ensure durable, high-conductivity connections.
