Best PSU for AMD Ryzen 7 9800X3D and NVIDIA GeForce RTX 4080 SUPER
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NVIDIA GeForce RTX 4080 SUPER
Configuration Analysis
System Performance Assessment
This system is a powerhouse, capable of running any modern game at maximum settings with high refresh rates at 1440p and 4K resolutions. The Ryzen 7 9800X3D and RTX 4080 SUPER provide exceptional performance for gaming, content creation, and other demanding tasks. Expect smooth gameplay and fast rendering times.
Recommended Power Supplies
CORSAIR RM750e (2025) Fully Modular Low-Noise ATX Power Supply with 12V-2×6 Cable – ATX 3.1 & PCIe 5.1 Compliant, Cybenetics Gold Efficiency, 105°C-Rated Capacitors, Modern Standby Mode – Black
Thermaltake GF1 (2024) Fully Modular ATX 750W Power Supply – 80 Plus Gold – Ultra Quiet – Zero RPM, PS-TPD-0750FNFAGU-P
The Thermaltake GF1 750W Gold is perfect! It provides ample, efficient power for your 9800X3D and RTX 4080 SUPER, with room to spare.
ARESGAME AGV Series 750W Power Supply, 80 Plus Bronze Certified, Semi Modular Power Supply, 5 Year Warranty
The ARESGAME 750W Bronze is a solid choice! Enough wattage for your 4080 SUPER/9800X3D combo, and the semi-modular design helps with cable management.
Comparison Table
| Model | Wattage | Efficiency | Form Factor | Modularity | Price | Best For |
|---|---|---|---|---|---|---|
| CORSAIR RM750e (2025) Fully Modular Low-Noise ATX Power Supply with 12V-2×6 Cable – ATX 3.1 & PCIe 5.1 Compliant, Cybenetics Gold Efficiency, 105°C-Rated Capacitors, Modern Standby Mode – Black | 750W | 80+ Gold | ATX | Full-Modular | $99.99 | Overall Value |
| Thermaltake GF1 (2024) Fully Modular ATX 750W Power Supply – 80 Plus Gold – Ultra Quiet – Zero RPM, PS-TPD-0750FNFAGU-P | 750W | 80+ Gold | ATX | Full-Modular | $81.99 | Energy Efficiency |
| ARESGAME AGV Series 750W Power Supply, 80 Plus Bronze Certified, Semi Modular Power Supply, 5 Year Warranty | 750W | 80+ Gold | ATX | Semi-Modular | $54.9 | Energy Efficiency |
Why This Wattage?
Power Calculation
The recommended PSU wattage is calculated based on the total power draw of your CPU (AMD Ryzen 7 9800X3D) and GPU (NVIDIA GeForce RTX 4080 SUPER), plus approximately 100W for other components like motherboard, memory, and storage devices.
Extra Headroom
We add an additional 30% headroom to ensure optimal efficiency, handle power spikes, and allow for future upgrades. This ensures your system runs stable and your PSU operates in its optimal efficiency range.
Efficiency Standards
We recommend power supplies with 80 Plus certification, which represents higher energy efficiency and more reliable performance. Power supplies are most efficient at 50-60% load, so having adequate headroom is important.
Power Efficiency Tips
Enable AMD's Eco Mode in the BIOS to limit the CPU's power consumption when not under heavy load.
Utilize NVIDIA's GeForce Experience to optimize game settings for the best balance between performance and power usage.
Consider undervolting the GPU slightly to reduce power consumption without significantly impacting performance.
Special Installation Note
Ensure the PCIe 5.0 12V-2×6 cable is securely connected directly from the power supply to the RTX 4080 SUPER, rather than using adapter cables if possible, to ensure stable power delivery.
Usage Scenarios
AAA Gaming
Effortlessly handles the latest AAA titles at maximum settings, delivering smooth frame rates and stunning visuals at 4K resolution.
Video Editing
Quickly renders high-resolution video projects, enabling seamless editing workflows and efficient processing of demanding visual effects.
AI Development
Facilitates fast training of AI models, supporting machine learning tasks with its powerful CPU and GPU capabilities.
Installation Tips
Position Properly
Most cases have a dedicated PSU bay at the bottom. Ensure the PSU fan is facing down if your case has bottom ventilation, allowing it to draw cool air from outside.
Cable Management
With modular PSUs, connect only the cables you need. Route cables behind the motherboard tray when possible for better airflow and cleaner appearance.
Proper Connections
Ensure all power connectors are fully seated and locked. The NVIDIA GeForce RTX 4080 SUPER will require dedicated PCIe power connectors from the PSU.
Test Before Completing
Before fully closing your case, connect the essential components and test that your system boots correctly with the new power supply.
The RM750e's 750W, ATX 3.1 compliance, and PCIe 5.1 support are perfect for reliably powering your 9800X3D and RTX 4080 SUPER.