Best PSU for AMD Ryzen 7 8700G and NVIDIA GeForce RTX 5080
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NVIDIA GeForce RTX 5080
Configuration Analysis
System Performance Assessment
This system delivers excellent performance for gaming at high resolutions and refresh rates. The RTX 5080 paired with the Ryzen 7 8700G allows for smooth gameplay in demanding titles, even with ray tracing enabled. It's also well-suited for content creation tasks like video editing and 3D rendering, offering a responsive and powerful experience.
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 (2024) 750W Gold is perfect: plenty of clean, efficient power with headroom for that 5080, and fully modular for a clean build!
MSI MAG A750GL PCIE 5.1 & ATX 3.1 Gaming Power Supply – Full Modular – 80 Plus Gold Certified 750W – Compact Size – ATX PSU – 10 Year Warranty
The MSI A750GL has the PCIe 5.1 & ATX 3.1 you need for the RTX 5080, plus headroom for the 8700G and peace of mind with its 10-year 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 |
| MSI MAG A750GL PCIE 5.1 & ATX 3.1 Gaming Power Supply – Full Modular – 80 Plus Gold Certified 750W – Compact Size – ATX PSU – 10 Year Warranty | 750W | 80+ Gold | ATX | Full-Modular | $94.99 | Energy Efficiency |
Why This Wattage?
Power Calculation
The recommended PSU wattage is calculated based on the total power draw of your CPU (AMD Ryzen 7 8700G) 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 AMD Eco Mode in the BIOS to limit the CPU's TDP, reducing 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 RTX 5080 slightly to reduce power draw without significantly impacting performance. Use tools like MSI Afterburner.
Special Installation Note
Ensure the 12V-2×6 (or 12VHPWR) cable from the PSU is securely and fully connected to the RTX 5080. A loose connection can lead to system instability or damage.
Usage Scenarios
AAA Gaming
Play the latest AAA titles at ultra settings, high resolutions (1440p or 4K), and high refresh rates with ray tracing enabled.
Content Creation
Effortlessly handle video editing, graphic design, and 3D rendering tasks with fast processing and rendering times.
AI Development
Develop and train AI models, run simulations, and experiment with machine learning algorithms with good 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 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 RM750e offers headroom for your 5080 and 8700G, plus future-proof ATX 3.1 & PCIe 5.1 for worry-free upgrades.