Best PSU for AMD Ryzen 9 9950X and NVIDIA GeForce RTX 5070 Ti
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NVIDIA GeForce RTX 5070 Ti
Configuration Analysis
System Performance Assessment
This system, featuring a Ryzen 9 9950X and RTX 5070 Ti, is built for high-end gaming at 4K resolution with high refresh rates, demanding content creation tasks such as video editing and 3D rendering, and smooth multitasking. It will handle virtually any modern application with ease and provide exceptional performance for years to come.
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 has the clean power and headroom your 9950X/5070 Ti combo needs, plus it's fully modular for easy cable management.
ARESGAME AGV Series 750W Power Supply, 80 Plus Bronze Certified, Semi Modular Power Supply, 5 Year Warranty
The ARESGAME 750W provides ample, efficient power for your Ryzen 9 and RTX 5070 Ti, with semi-modular cables for cleaner build and a solid warranty.
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 9 9950X) 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 for the CPU to reduce power consumption during less intensive tasks.
Utilize NVIDIA's power management features in the GeForce Experience software to optimize GPU power usage.
Consider undervolting the GPU to maintain performance while lowering power draw and temperatures.
Special Installation Note
Ensure the 12VHPWR (12V-2×6) connector from your chosen power supply (specifically the Corsair RM750e, if selected) is fully and securely plugged into the RTX 5070 Ti to avoid any power delivery issues. Double-check the connection before powering on.
Usage Scenarios
AAA Gaming
Experience smooth, high-fidelity gaming at 4K resolution with ray tracing enabled on demanding AAA titles like Cyberpunk 2077.
Video Editing
Edit 4K and even 8K video footage with ease, utilizing the powerful CPU and GPU for fast rendering and smooth playback.
AI Development
Train and develop AI models and algorithms efficiently, leveraging the GPU's parallel processing capabilities for accelerated performance.
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 provides reliable 80+ Gold power for your Ryzen 9 and RTX 5070 Ti, with headroom and future-proof ATX 3.1/PCIe 5.1 support.