Introduction
This manual provides detailed instructions for the installation, operation, maintenance, and troubleshooting of your SAMA GT-750W 750W Fully Modular 80 Plus Gold Certified ATX 3.1 & PCIE 5.1 Compliant Power Supply. Please read this manual thoroughly before use to ensure proper functionality and safety.
Key Features
- Fully Modular Design & Streamlined Cable Management: Connect only the cables your system needs. Flat cables ensure effortless cable management, keeping your build clean and improving airflow.
- ATX 3.1 & PCIe 5.1 Compatibility: Designed to meet the latest ATX 3.1 standards, with native PCIe 5.1 ports and cables, fully supporting high-end GPUs like the RTX 3090 Ti and RTX 40 series.
- 80 PLUS Gold & CYBENETICS Gold Certification: Achieves up to 91.15% efficiency at 50% load, reducing energy waste and heat output while enhancing system stability.
- ECO Fan with FDB Bearing & Quiet Operation: Equipped with a 120mm ECO fan featuring Fluid Dynamic Bearing (FDB) technology, delivering efficient cooling with noise levels as low as ≤20dB-A.
- Premium Japanese Capacitors & 5-Year Warranty: Built with high-quality Japanese capacitors for stable power delivery and long-term reliability.
Image: The SAMA GT-750W power supply unit, highlighting its 80 Plus Gold efficiency and ATX 3.1 compliance.
Safety Information
- Always disconnect the power cord from the wall outlet before installing, removing, or cleaning the power supply.
- Do not open the power supply unit. High voltages are present inside, even when disconnected.
- Ensure proper grounding for your computer system.
- Use only the modular cables provided with this power supply. Using incompatible cables may damage the unit and connected components.
- Install the power supply in a well-ventilated area to prevent overheating.
Package Contents
- SAMA GT-750W Power Supply Unit
- Modular Cable Set (including 20+4 Pin ATX, CPU, PCIe 5.1 12V-2x6, SATA, Molex cables)
- AC Power Cord
- Mounting Screws
- User Manual (this document)
Video: An official product video from SAMA showcasing the G Series Power Supply, including its modular cables and features.
Setup and Installation
Follow these steps to install your SAMA GT-750W power supply into your computer system.
Step 1: Prepare Your System
- Turn off your computer and disconnect the AC power cord from the wall outlet.
- Open your computer case to access the internal components.
- Remove your old power supply, if applicable, by unscrewing it from the case and disconnecting all cables.
Step 2: Install the Power Supply
Position the SAMA GT-750W power supply in the designated PSU bay of your computer case. Ensure the fan is oriented correctly for optimal airflow (typically facing downwards or upwards depending on case design). Secure the power supply with the provided mounting screws.
Image: The SAMA GT-750W power supply unit, showing its compact design and fan grille.
Image: Diagram illustrating the compact dimensions of the SAMA GT-750W power supply (140mm x 150mm x 86mm).
Step 3: Connect Modular Cables
The SAMA GT-750W features a fully modular design, allowing you to connect only the necessary cables for your components. This reduces clutter and improves airflow.
Main Power Connectors
- Connect the 20+4 Pin ATX cable to the corresponding port on your motherboard.
- Connect the 4+4 Pin CPU (EPS) cable(s) to your motherboard's CPU power header(s). Modern motherboards may require one or two of these connectors.
Graphics Card Power Connectors
This power supply supports ATX 3.1 and PCIe 5.1. Use the native 12V-2x6 (450W) cable for compatible RTX 30 series (3090 Ti) and RTX 40 series GPUs. For other graphics cards, use the 6+2 Pin PCIe cables.
Image: Close-up view of the modular cable connections on the SAMA GT-750W power supply, highlighting the native 12V-2x6 connector for modern GPUs and ATX 3.1 compliance.
Image: An array of fully modular cables included with the SAMA GT-750W power supply, demonstrating the variety of connectors available.
Peripheral Power Connectors
- Connect SATA power cables to your SSDs, HDDs, and optical drives.
- Connect Molex cables for other peripherals such as case fans or older drives, as needed.
Step 4: Cable Management
Utilize the flat cables to route and secure them neatly within your case. Proper cable management improves airflow, which is crucial for maintaining optimal system temperatures and overall stability.
Video: A video demonstrating modular cabling and quiet operation features of a power supply, relevant for understanding cable management and fan technology.
Operating Instructions
After installation, ensure all connections are secure and that no cables are obstructing fans or airflow. Close your computer case.
Power On
Connect the AC power cord to the power supply and a grounded wall outlet. Flip the power switch on the back of the PSU to the "On" position (usually marked "I"). You can then power on your computer using its front panel power button.
Image: Rear view of the SAMA GT-750W power supply, showing the AC power input and the main power switch.
ECO Fan Mode
The 120mm ECO fan with Fluid Dynamic Bearing (FDB) operates quietly. The fan speed adjusts automatically based on the power supply's load and internal temperature to maintain optimal cooling while minimizing noise output. This intelligent control ensures efficient and silent operation.
Image: An animated illustration of the 120mm ECO fan with Fluid Dynamic Bearing (FDB) technology, highlighting its quiet and efficient cooling.
Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your power supply.
Cleaning
- Periodically clean dust from the power supply's fan grille and vents using compressed air. Ensure the system is powered off and unplugged from the wall outlet before cleaning.
- Do not use liquid cleaners directly on the power supply unit.
Cable Management Check
Occasionally check that all modular cables are securely connected to both the power supply and your components. Ensure no cables are obstructing the PSU fan or other case fans, which could impede airflow.
Troubleshooting
If you encounter issues with your SAMA GT-750W power supply, refer to the following common problems and solutions.
No Power
- Check Power Connections: Ensure the AC power cord is securely plugged into both the wall outlet and the PSU. Verify the PSU's main power switch is in the "On" position (marked "I").
- Internal Connections: Confirm that the 20+4 Pin ATX and 4+4 Pin CPU cables are firmly connected to the motherboard.
- Wall Outlet: Test the wall outlet with another device to ensure it is functional.
System Instability or Random Shutdowns
- Overload: Ensure your system's total power draw does not exceed the 750W capacity of the PSU. Consider using a power calculator for your components.
- Cable Connections: Re-seat all modular cables, especially those connected to the motherboard and graphics card, to ensure a solid connection.
- Component Issues: Rule out other components (RAM, CPU, GPU) as potential causes by testing them if possible.
Excessive Noise
- Fan Obstruction: Check if the PSU fan is obstructed by cables or dust. Clean the fan if necessary (refer to Maintenance section).
- Case Vibration: Ensure the PSU is securely mounted in the case to prevent vibrations that could cause noise.
Power Supply Unit (PSU) Dead on Arrival (DOA)
If the PSU shows no signs of life upon initial installation despite all connections being correct and troubleshooting steps followed, it may be defective. Contact SAMA support or your retailer for assistance and warranty claims.
Video: A brief overview of a 750W power supply, demonstrating its appearance and modular cables, which can be helpful for visual troubleshooting.
Specifications
| Feature | Detail |
|---|---|
| Product Name | GT 750 |
| Model | GT-750W |
| Type | ATX 3.1 |
| Power Output | 750W |
| Fan | 120mm FDB Fan |
| PFC Type | Active PFC |
| Dimensions (L x W x H) | 150mm x 140mm x 86mm |
| Certification | 80 PLUS Gold, CYBENETICS Gold, CB, CE, TUV |
| AC Input | 100-240Vac / 50-60Hz / 10-6A |
| Output DC Voltage | +5V, +3.3V, +12V, -12V, +5VSB |
| Max Output Current (+5V) | 20A |
| Max Output Current (+3.3V) | 20A |
| Max Output Current (+12V) | 62.4A |
| Max Output Current (-12V) | 0.4A |
| Max Output Current (+5VSB) | 2.5A |
| Max Output Power (+5V/+3.3V) | 100W |
| Max Output Power (+12V) | 748.8W |
| Max Output Power (-12V) | 4.8W |
| Max Output Power (+5VSB) | 12.5W |
| Compatible Devices | Personal Computer |
| Connector Types | ATX, PCI Express, SATA, Molex |
| Cooling Method | Air |
| System Bus Connector Type | 20+4 Pin |
Image: The SAMA GT-750W power supply unit alongside a table detailing its electrical and physical specifications.
Image: A graph illustrating the efficiency of the SAMA GT-750W power supply across different load percentages, demonstrating its 80 PLUS Gold certification.
Image: An internal view of the SAMA GT-750W power supply, highlighting the premium Japanese capacitors used for stability and longevity.
Warranty and Support
The SAMA GT-750W Power Supply is backed by a 5-year warranty, ensuring reliable performance and peace of mind for your investment.
For technical support, warranty claims, or further assistance, please contact SAMA customer service through their official channels or the retailer where the product was purchased.
Manufacturer Contact Information: SAMA
EU Spare Part Availability Duration: 5 Years