Best PSU for Intel Core i9-13900K 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, capable of handling demanding tasks like 4K gaming at high refresh rates, video editing, and content creation. The i9-13900K and RTX 5070 Ti provide a powerful combination for smooth frame rates and fast rendering. The system is well-suited for both professional and enthusiast users.
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! Fully modular and quiet, it provides ample clean power for your high-end CPU/GPU combo.
ARESGAME AGV Series 750W Power Supply, 80 Plus Bronze Certified, Semi Modular Power Supply, 5 Year Warranty
The ARESGAME 750W Bronze PSU gives you plenty of headroom for your i9 and RTX 5070 Ti, plus semi-modular cables for a cleaner build.
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 (Intel Core i9-13900K) 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 CPU power saving features in BIOS (e.g., SpeedStep, C-states) to reduce power consumption when the CPU is idle.
Utilize NVIDIA's GeForce Experience to optimize game settings for performance and power efficiency.
Consider undervolting the GPU slightly to reduce power draw without significantly impacting performance.
Special Installation Note
Ensure the 12VHPWR (12V-2×6) cable from the PSU is securely connected to the RTX 5070 Ti. Fully seat the connector to avoid potential issues and utilize the direct cable from the PSU rather than an adapter.
Usage Scenarios
High-End Gaming
This PC can handle any modern game at maximum settings, 4K resolution, and high refresh rates, ensuring smooth, immersive gameplay.
Video Editing
Effortlessly edit and render high-resolution videos (4K/8K) with complex effects and transitions, thanks to the powerful CPU and GPU combination.
AI Development
Train and run complex AI models, perform machine learning tasks, and accelerate data analysis with the robust processing power and ample VRAM.
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 support is perfect for your 5070 Ti, and 750W Gold efficiency handles the i9-13900K with headroom.