Best PSU for AMD Ryzen 7 9800X3D and AMD Radeon RX 9070 XT
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AMD Radeon RX 9070 XT
Configuration Analysis
System Performance Assessment
This system is geared towards enthusiast-level gaming and demanding workloads. The Ryzen 9 9800X3D and Radeon RX 9070 XT can handle virtually any game at maximum settings and high resolutions (1440p, 4K), as well as intensive tasks such as video editing, 3D rendering, and content creation with ease. Expect excellent frame rates and responsiveness.
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
MSI MAG A750GL PCIE 5.1 & ATX 3.1 Gaming Power Supply – Full Modular – 80 Plus Gold Certified 750W – Compact Size – ATX PSU – 10 Year Warranty
The MSI MAG A750GL's ATX 3.1 & PCIe 5.1 support is perfect for future-proofing your 9800X3D/RX 9070 XT build, with plenty of headroom.
EVGA 750 N1, 750W, 2 Year Warranty, Power Supply 100-N1-0750-L1
The EVGA 750 N1 offers ample wattage for your 9800X3D/RX 9070 XT build, ensuring stable power delivery without breaking the bank.
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 | $100.99 | Overall Value |
| MSI MAG A750GL PCIE 5.1 & ATX 3.1 Gaming Power Supply – Full Modular – 80 Plus Gold Certified 750W – Compact Size – ATX PSU – 10 Year Warranty | 750W | 80+ Gold | ATX | Full-Modular | $99.99 | Energy Efficiency |
| EVGA 750 N1, 750W, 2 Year Warranty, Power Supply 100-N1-0750-L1 | 750W | 80+ Gold | ATX | Non-Modular | $68.99 | 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 (AMD Radeon RX 9070 XT), 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 Radeon Chill in games to limit frame rates during less demanding scenes, reducing GPU power draw.
Utilize the Ryzen Master software to create a custom power profile for the CPU, balancing performance and power consumption based on workload.
Ensure adequate case airflow to prevent thermal throttling, which can negatively impact performance and increase power consumption.
Special Installation Note
Given the RX 9070 XT's power requirements, connect the GPU using separate PCIe power cables directly from the PSU, rather than daisy-chaining them, to ensure stable and sufficient power delivery.
Usage Scenarios
AAA Gaming
This system can handle the latest AAA games at maximum settings with high framerates and smooth performance, even at 4K resolution.
Video Editing
Effortlessly edit and render high-resolution videos, including 4K and 8K footage, with fast processing times and smooth playback.
AI Development
Train complex AI models and run demanding simulations with the powerful CPU and GPU, accelerating development workflows significantly.
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 AMD Radeon RX 9070 XT 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 ATX 3.1 & PCIe 5.1 compliance is perfect for the 9070 XT, and 750W Gold provides headroom for your 9800X3D.