Best PSU for AMD Ryzen 7 9800X3D and NVIDIA GeForce RTX 5070 Ti
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NVIDIA GeForce RTX 5070 Ti
Configuration Analysis
System Performance Assessment
This system delivers exceptional performance, easily handling the latest games at high resolutions and refresh rates. The Ryzen 9800X3D and RTX 5070 Ti provide a potent combination for demanding workloads like video editing and content creation. Expect smooth, responsive performance across a wide range of applications.
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
ARESGAME AGV Series 750W Power Supply, 80 Plus Bronze Certified, Semi Modular Power Supply, 5 Year Warranty
The ARESGAME 750W gives your Ryzen 7/RTX 5070 Ti plenty of stable power, plus its semi-modular design helps with clean cable management.
Thermaltake Smart 700W 80+ White Certified PSU, Continuous Power with 120mm Ultra Quiet Fan, ATX 12V V2.3/EPS 12V Active PFC Power Supply PS-SPD-0700NPCWUS-W
The Thermaltake 700W gives you ample power for the 9800X3D and RTX 5070 Ti, and its reliable continuous power delivery is key.
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 | $114.99 | Overall Value |
| 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 |
| Thermaltake Smart 700W 80+ White Certified PSU, Continuous Power with 120mm Ultra Quiet Fan, ATX 12V V2.3/EPS 12V Active PFC Power Supply PS-SPD-0700NPCWUS-W | 700W | 80+ White | ATX | Non-Modular | $54.99 | Budget Builds |
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 5070 Ti), 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 TDP and reduce power consumption during less demanding tasks.
Utilize NVIDIA's GeForce Experience to optimize game settings for the best balance between performance and power efficiency.
Consider undervolting the GPU slightly, which can reduce power consumption without significantly impacting performance.
Special Installation Note
Ensure the CORSAIR RM750e's 12V-2×6 cable is securely connected to the RTX 5070 Ti for optimal power delivery and to avoid potential compatibility issues. Double-check the connection after installation.
Usage Scenarios
AAA Gaming
Effortlessly runs the latest AAA titles at high resolutions (1440p/4K) with maxed-out settings and buttery-smooth frame rates, thanks to the powerful CPU and GPU.
Content Creation
Handles demanding video editing, 3D rendering, and graphic design tasks with ease, benefiting from the CPU's multi-core performance and GPU acceleration.
High-End Streaming
Streams games or creative content at high resolutions (1080p/1440p) with minimal performance impact, utilizing the CPU's cores and the GPU's encoding 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 5070 Ti 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 your RTX 5070 Ti, and 750W gives headroom for the 9800X3D.