Best PSU for Intel Core i7-14700K and NVIDIA GeForce RTX 5080
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NVIDIA GeForce RTX 5080
Configuration Analysis
System Performance Assessment
This system, featuring an i7-14700K and RTX 5080, is built for top-tier gaming and demanding workloads. Expect ultra-high frame rates at 4K resolution with ray tracing enabled. Content creation tasks like video editing and 3D rendering will also benefit significantly from this powerful combination, delivering near-instantaneous results.
Recommended Power Supplies
Thermaltake GF1 (2024) Fully Modular ATX 850W Power Supply – 80 Plus Gold – Ultra Quiet – Zero RPM, PS-TPD-0850FNFAGU-P
CORSAIR RM850e (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
The RM850e provides ample headroom for your i7 and RTX 5080, with ATX 3.1 & PCIe 5.1 for next-gen power delivery.
MSI MAG A850GL PCIE 5.1 & ATX 3.1 Gaming Power Supply – Full Modular – 80 Plus Gold Certified 850W – Compact Size – ATX PSU – 10 Year Warranty
The MSI MAG A850GL provides reliable 80+ Gold power and ATX 3.1 support, perfect for handling your i7-14700K and RTX 5080's demands with headroom.
Comparison Table
| Model | Wattage | Efficiency | Form Factor | Modularity | Price | Best For |
|---|---|---|---|---|---|---|
| Thermaltake GF1 (2024) Fully Modular ATX 850W Power Supply – 80 Plus Gold – Ultra Quiet – Zero RPM, PS-TPD-0850FNFAGU-P | 850W | 80+ Gold | ATX | Full-Modular | $94.99 | Overall Value |
| CORSAIR RM850e (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 | 850W | 80+ Gold | ATX | Full-Modular | $129.99 | Energy Efficiency |
| MSI MAG A850GL PCIE 5.1 & ATX 3.1 Gaming Power Supply – Full Modular – 80 Plus Gold Certified 850W – Compact Size – ATX PSU – 10 Year Warranty | 850W | 80+ Gold | ATX | Full-Modular | $119.99 | Energy Efficiency |
Why This Wattage?
Power Calculation
The recommended PSU wattage is calculated based on the total power draw of your CPU (Intel Core i7-14700K) and GPU (NVIDIA GeForce RTX 5080), 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 like Intel Speed Shift and SpeedStep in the BIOS to reduce power consumption when idle.
Utilize NVIDIA's GeForce Experience to optimize game settings for the best balance between visual quality and power usage.
Monitor PSU wattage draw during heavy load with software to identify potential overdraw issues.
Special Installation Note
Connect the 12V-2×6 (or PCIe 5.0) cable directly from the PSU to the RTX 5080, avoiding adapters, to ensure stable and reliable power delivery and prevent potential issues.
Usage Scenarios
Extreme Gaming
Plays the newest AAA games at maximum settings with ray tracing enabled, achieving high refresh rates on ultrawide or 4K monitors.
Content Creation
Handles 4K video editing, complex 3D rendering, and live streaming with ease, accelerating workflows and reducing render times.
AI Development
Trains machine learning models, performs complex simulations, and develops AI applications faster with the powerful CPU and GPU combination.
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 5080 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 Thermaltake GF1 850W Gold is perfect! Fully modular for clean looks, and plenty of headroom for your i7 and RTX 5080's power needs.