SFX Power Supply GAMEMAX The Savior for ITX Small Cases
Market Trends and Product Advantages of SFX PSUWith the popularity of mini PCs, ITX small cases, and customized compact PC devices, SFX power supplies have become core components for small-form factor builds, balancing compact size and high performance. As an innovative brand in the hardware sector,
GS 850G WH V25
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.
GS 850G V25
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.
GS 750G WH V25
GS 750G 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.
GS 750G V25
GS 750G 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.
GS 650G WH V25
GS 650G 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.
GS 650G V25
GS 650G 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.
GS-700 WH
The small form factor power supply for your big ideas.
• GameMax SFX Series power supplies bring legendary performance and reliability to the SFX small form factor standard
• They have the features found in full-size high-performance power supplies, with compliance with 80 PLUS efficiency, superior voltage regulation, along with smart fan controller for better reliability.
• SFX Modular 700W (2022)The new line of GameMax GS-700 is versatile in its application and powerful with a small footprint
• It is a standard SFX unit, measuring at 125 mm (L) x 100 mm (W) x 63.5 mm (H)
• The GS-700 is shipped with an SFX to ATX adapter bracket in the box, which allows the power supply to be mounted not only in the SFX form factor chassis, but also a standard ATX chassis should the user prefers to reserve more space for airflow inside the PC case
• The GameMax hybrid fan control is always enabled to optimize the cooling according to necessity.
GS-700
The small form factor power supply for your big ideas. GameMax SFX Series power supplies bring legendary performance and reliability to the SFX small form factor standard
• They have the features found in full-size high-performance power supplies, with compliance with 80 PLUS efficiency, superior voltage regulation, along with smart fan controller for better reliability.
• SFX Modular 700W (2022)The new line of GameMax GS-700 is versatile in its application and powerful with a small footprint
• It is a standard SFX unit, measuring at 125 mm (L) x 100 mm (W) x 63.5 mm (H)
• The GS-700 is shipped with an SFX to ATX adapter bracket in the box, which allows the power supply to be mounted not only in the SFX form factor chassis, but also a standard ATX chassis should the user prefers to reserve more space for airflow inside the PC case
• The GameMax hybrid fan control is always enabled to optimize the cooling according to necessity.
GS-450
The small form factor power supply for your big ideas. GameMax SFX Series power supplies bring legendary performance and reliability to the SFX small form factor standard
• They have the features found in full-size high-performance power supplies, with compliant with 80 PLUS efficiency, superior voltage regulation, along with smart fan controller for better reliability.
• Active PFC and Full Range AC Input (100-240V)
• Designed for custom-built PCs, mini-servers and HTPCs
• Smart auto fan speed controller
• The micro SFX design
• Safety and EMC certified by CE
• High Efficiency up to 85%
• Fully protection functions
GS-250 WH
GameMax Micro SFX Design is known mostly as a replacement power supply, but it has now evolved and can be used for Mini-ATX cases, custom-built computers, mini-servers, and much more
• With the increase in wattage and efficiency, the micro SFX is a conventional PSU that can be used for multiple purposes
• The Active PFC and Full Range function promote a smarter PSU
• Able to detect the differences in wattage that are needed to power up your system, you can rest assured as it will provide and maintain the most suitable power needed
• Thermal fan speed control will detect the amount of heat generated by the computer
• Using this controller to detect the heat levels, it will automatically adjust the fan speed accordingly and the need to worry about the heat levels, of a PSU, becomes almost non-existent.
GS-275 WH
GameMax Micro SFX Design are known mostly as a replacement power supply, but it has now evolved and can be used for Mini-ATX cases, custom built computers, mini-servers, and much more
• With the increase of wattage and efficiency, the micro SFX is a conventional PSU that can be used for multiple purposes
• The Active PFC and Full Range function promotes a smarter PSU
• Able to detect the differences of wattage that is needed to power up your system, you can be rest assured as it will provide and maintain the most suitable power needed
• Thermal fan speed control it will detect the amount of heat generated by the computer
• Using this controller to detect the heat levels, it will automatically adjust the fan speed accordingly and the need to worry about the heat levels, of a PSU, becomes almost non-existent.
GS-300 WH
GameMax Micro SFX Design are known mostly as a replacement power supply, but it has now evolved and can be used for Mini-ATX cases, custom built computers, mini-servers, and much more
• With the increase of wattage and efficiency, the micro SFX is a conventional PSU that can be used for multiple purposes
• The Active PFC and Full Range function promotes a smarter PSU
• Able to detect the differences of wattage that is needed to power up your system, you can be rest assured as it will provide and maintain the most suitable power needed
• Thermal fan speed control it will detect the amount of heat generated by the computer
• Using this controller to detect the heat levels, it will automatically adjust the fan speed accordingly and the need to worry about the heat levels of a PSU, becomes almost non-existent.
GS-650G WH
• The GameMax SFX Series Power Supplies offer compact, high-performance solutions designed for small form factor builds, combining efficiency and reliability in one package。
• Exceptional Performance: Certified 80 PLUS efficiency, precise voltage regulation, and smart fan control ensure dependable operation.
• Compact and Powerful: The SFX Modular 650W (2024) measures 125mm x 110mm x 65mm, delivering robust power in a small footprint.
• Optimized Cooling: GameMax hybrid fan control automatically adjusts cooling based on system demands for maximum efficiency.
GS-750G WH
• The GameMax SFX Series Power Supplies offer compact, high-performance solutions designed for small form factor builds, combining efficiency and reliability in one package。
• Exceptional Performance: Certified 80 PLUS efficiency, precise voltage regulation, and smart fan control ensure dependable operation.
• Compact and Powerful: The SFX Modular 750W (2024) measures 125mm x 110mm x 65mm, delivering robust power in a small footprint.
• Optimized Cooling: GameMax hybrid fan control automatically adjusts cooling based on system demands for maximum efficiency.
GS-850G WH
• The GameMax SFX Series Power Supplies offer compact, high-performance solutions designed for small form factor builds, combining efficiency and reliability in one package。
• Exceptional Performance: Certified 80 PLUS efficiency, precise voltage regulation, and smart fan control ensure dependable operation.
• Compact and Powerful: The SFX Modular 850W (2024) measures 125mm x 110mm x 65mm, delivering robust power in a small footprint.
• Optimized Cooling: GameMax hybrid fan control automatically adjusts cooling based on system demands for maximum efficiency.
Market Trends and Product Advantages of SFX PSU
With the popularity of mini PCs, ITX small cases, and customized compact PC devices, SFX power supplies have become core components for small-form factor builds, balancing compact size and high performance. As an innovative brand in the hardware sector, GameMax's SFX series power supplies offer diverse choices for users seeking a balance between space and performance, featuring high efficiency, reliability, and modular design. Below is a detailed analysis of the full product range:
II. GameMax High-Wattage SFX Gold Series (Standard SFX Form Factor)
(1) GS-850G 80 Plus Gold SFX Power Supply
Core Specifications: 850W power / 80 Plus Gold certification / Standard SFX size (125mm×100mm×63.5mm)
Technical Highlights:
Uses high-quality Japanese electrolytic capacitors with excellent high-temperature resistance for long-term stable operation.
Intelligent temperature-controlled cooling system: fan stops at low loads, dynamically adjusts speed at high loads to balance silence and heat dissipation.
Universal voltage adaptability (100-240V) for global power grids.
Supports ATX 3.1 standard and PCIe 5.1 interfaces, compatible with next-gen graphics cards and motherboards.
Application Scenarios: High-end small case builds, RTX 40 series/AMD 7000 series graphics card platforms, small workstations.
(2) GS-750G 80 Plus Gold SFX Power Supply
Core Specifications: 750W power / 80 Plus Gold certification / Standard SFX size
Technical Highlights:
Same architecture as the 850W model, supporting 80 Plus Gold efficiency (over 90% at typical loads).
Fully modular cable design reduces cable clutter in the case and improves heat dissipation.
Multiple protection mechanisms: Over Voltage Protection (OVP), Over Current Protection (OCP), Short Circuit Protection (SCP), etc.
Application Scenarios: Mid-range high-performance PCs, small cases with multi-hard drive storage, gaming mini PCs.
(3) GS-650G 80 Plus Gold SFX Power Supply
Core Specifications: 650W power / 80 Plus Gold certification / Standard SFX size
Technical Highlights:
Optimized light-load efficiency, suitable for daily office and light gaming scenarios.
12cm silent fan with hydraulic bearings, lifespan up to 50,000 hours.
Active PFC design with power factor close to 1, reducing energy loss.
Application Scenarios: Mainstream home small cases, office mini PCs, entry-level gaming PCs.
III. GameMax Mid-Low Wattage SFX Power Series (Including Micro SFX Design)
(1) GS-450 SFX Power Supply
Core Specifications: 450W power / 80 Plus White certification / Standard SFX size
Technical Highlights:
Condenses core technologies of full-size power supplies, supports 12V high-current output (single rail 37.5A).
Compatible with Mini-ITX motherboards and small cases, supports ATX adapter brackets.
Static fan design with zero noise at low loads, ideal for silent environments.
Application Scenarios: HTPC home theater systems, low-power office hosts, small NAS devices.
(2) GS-300 WH Micro SFX Power Supply
Core Specifications: 300W power / Non-modular / Micro SFX size (100mm×63.5mm×63.5mm)
Technical Highlights:
Ultra-compact Micro SFX design, only 1/3 the volume of a standard ATX power supply.
Supports Mini-ATX cases, customized micro PCs, and industrial control devices.
Wide voltage design (110-240V) for unstable power grids.
Application Scenarios: Micro servers, embedded devices, ultra-compact build solutions.
(3) GS-275 WH Micro SFX Power Supply
Core Specifications: 275W power / Micro SFX size / Passive cooling design
Technical Highlights:
Fanless silent design for zero noise operation, suitable for medical equipment and silent server rooms.
High-efficiency topology with over 85% efficiency at typical loads.
All-solid-state capacitor design enhances high-temperature resistance and anti-interference capabilities.
Application Scenarios: Silent servers, precision instrument power supply, noise-sensitive office environments.
(4) GS-250 WH Micro SFX Power Supply
Core Specifications: 250W power / Micro SFX size / Active PFC
Technical Highlights:
Lightweight design at only 0.8kg, easy to install in small devices.
Supports DC-DC conversion technology for stable multi-voltage output.
Compatible with mini-ITX motherboards and low-power CPUs (e.g., Intel N series, AMD APU).
Application Scenarios: Mini education terminals, home gateway devices, low-power micro hosts.
IV. Summary of GameMax SFX Power Core Technologies
| Technical Dimension | High-Wattage Series (GS-650G/750G/850G) | Mid-Low Wattage Series (GS-250/275/300/450) |
|---|---|---|
| Efficiency Certification | 80 Plus Gold (Typical load efficiency >90%) | 80 Plus White/passive high-efficiency design |
| Capacitor Configuration | High-quality Japanese electrolytic capacitors (main capacitors rated for 105℃) | Solid-state capacitors + low ESR electrolytic capacitor combination |
| Cooling Solution | 12cm intelligent temperature-controlled fan (supports stop mode) | Fanless (250/275W) or static fan (300/450W) |
| Modular Design | Fully modular (GS-750G/850G) | Non-modular (mid-low wattage models) |
| Protection Functions | 6-layer hardware protection (OVP/OCP/OPP/SCP/OTP/UVP) | Basic overvoltage/overcurrent protection |
V. Purchase Guide: How to Match SFX Power Supplies with Build Requirements
Power Calculation: Based on the sum of CPU+GPU TDP, reserve a 20% power margin (e.g., RTX 4070 + 13th Gen i7 recommends 750W or higher).
Size Compatibility: Standard SFX fits most ITX cases; Micro SFX requires confirmation of case support for special form factors.
Efficiency and Silence Balance: 80 Plus Gold certification is suitable for long-term high-load use, while fanless designs are ideal for silent scenarios.
Future Upgrades: Models supporting ATX 3.1 and PCIe 5.1 (e.g., GS-850G) are compatible with next-gen hardware.
GameMax's SFX power series covers the full wattage range with layered technical designs, providing complete solutions from entry-level to high-end for miniaturized builds. Whether you're a performance-seeking gamer or a space-conscious office user, you can find a suitable power solution.
