Best PSU for AMD Ryzen 7 7800X3D and NVIDIA GeForce RTX 4070 Ti SUPER
+
NVIDIA GeForce RTX 4070 Ti SUPER
Configuration Analysis
System Performance Assessment
This system delivers excellent performance for gaming at 1440p and even 4K resolutions, with high refresh rates in many titles. The Ryzen 7 7800X3D is a top-tier gaming CPU, while the RTX 4070 Ti SUPER provides substantial graphical horsepower. Expect smooth gameplay, fast rendering, and strong performance in demanding 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 Bronze is perfect: plenty of headroom for your 7800X3D/4070 Ti SUPER, semi-modular for cleaner build, and backed by a 5-year warranty.
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 enough headroom for the 7800X3D and 4070 Ti SUPER without breaking the bank, a solid choice!
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 | $64.99 | 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 7800X3D) and GPU (NVIDIA GeForce RTX 4070 Ti 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 Eco Mode on the Ryzen 7 7800X3D to limit its power consumption without significantly impacting gaming performance.
Use NVIDIA's GeForce Experience to optimize game settings, balancing visual quality with power efficiency for smoother frame rates.
Consider undervolting the RTX 4070 Ti SUPER to reduce power draw while maintaining similar performance, potentially improving thermals.
Special Installation Note
Ensure the CORSAIR RM750e's 12V-2×6 cable is securely connected to the RTX 4070 Ti SUPER's power connector, as it's designed to handle the GPU's power demands efficiently and safely.
Usage Scenarios
AAA Gaming
This PC can handle the latest AAA games at high refresh rates and resolutions, with ray tracing enabled for stunning visuals.
Video Editing
Smooth 4K video editing and rendering is easily achievable with the powerful CPU and GPU, accelerating workflows significantly.
AI Development
The GPU can be used for machine learning tasks and AI development, accelerating model training and inference processes effectively.
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 4070 Ti 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 (2025) is perfect! Its ATX 3.1 and PCIe 5.1 compliance ensures reliable power delivery for your 7800X3D and 4070 Ti SUPER.