Best PSU for Ryzen 7 9800X3D & RTX 5080
This build is an enthusiast-tier gaming and workstation powerhouse, capable of excelling at 4K gaming, demanding productivity tasks, and content creation with ease.
850W
580W
68%
Enthusiast
🏆 Recommended Power Supplies
Hand-picked for your 850W target — sorted by overall value.
MSI MAG A850GL PCIE5, Fully Modular Compact Gaming 850W Power Supply, 80+ Gold, ATX 3.1 & PCIe 5.1 Ready, Native Dual-Color 12V-2×6 Cable, 10 Year Warranty
Excellent fully modular PSU with ATX 3.1/PCIe 5.1 readiness and a native 12V-2×6 cable, ideal for this high-end build.
Efficiency80+ Gold
FormATX
CablesFull-Modular
Price$117.99
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
A top-tier fully modular ATX 3.1/PCIe 5.1 PSU with 12V-2×6, known for low noise and high-quality components, perfect for this system.
Efficiency80+ Gold
FormATX
CablesFull-Modular
Price$109.99
be quiet! Pure Power 13 M 850W Power Supply, 80 Plus® Gold Certification, ATX 3.1 PSU, Support for PCIe 5.1 GPUs, semi-Passive 120mm be quiet! Fan, LLC Technology, Single Rail, for Overclocked GPUs
While non-modular, this ATX 3.1/PCIe 5.1 PSU offers solid performance and a native 12V-2×6 cable, suitable for the build's power needs.
Efficiency80+ Gold
FormATX
CablesNon-Modular
Price$109.90
Auotac 1000W Fully Modular Power Supply, 80+ Gold Certified PSU, ATX 3.1 & PCIe 5.1 Ready, 12V-2×6 Native Connector, 140mm RGB Low-Noise Smart Fan, 105℃ Japanese Capacitors, Black
Want extra headroom for future GPU upgrades or overclocking? This 1000W unit gives you peace of mind.
Efficiency80+ Gold
FormATX
CablesFull-Modular
Price$89.99
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📊 Quick Comparison
See the key differences at a glance.
| # | Model | Wattage | Efficiency | Modular | Price |
|---|---|---|---|---|---|
| 1 | MSI MAG A850GL PCIE5, Fully Modular Compact Gaming 850W Power Supply, 80+ Gold, ATX 3.1 & PCIe 5.1 Ready, Native Dual-Color 12V-2×6 Cable, 10 Year Warranty | 850W | 80+ Gold | Full-Modular | $107.99 |
| 2 | 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 | Full-Modular | $109.99 |
| 3 | be quiet! Pure Power 13 M 850W Power Supply, 80 Plus® Gold Certification, ATX 3.1 PSU, Support for PCIe 5.1 GPUs, semi-Passive 120mm be quiet! Fan, LLC Technology, Single Rail, for Overclocked GPUs | 850W | 80+ Gold | Non-Modular | $109.90 |
| ⬆️ | Auotac 1000W Fully Modular Power Supply, 80+ Gold Certified PSU, ATX 3.1 & PCIe 5.1 Ready, 12V-2×6 Native Connector, 140mm RGB Low-Noise Smart Fan, 105℃ Japanese Capacitors, Black Upgrade | 1000W | 80+ Gold | Full-Modular | $99.99 |
🔌 Power Budget
Your system uses 68% of the recommended PSU output — well within the efficient operating range.
850W (Recommended)
System draw: 580W
Headroom: 270W (30%)
💡 Why 850W?
Power Calculation
CPU + GPU draw, plus ~100W for motherboard, RAM, fans, and storage.
30% Headroom
Extra capacity absorbs transient power spikes, keeps efficiency in the sweet spot, and leaves room for future upgrades.
80 Plus Efficiency
We only recommend certified PSUs. Higher ratings mean less wasted energy, lower heat, and quieter fans.
🌿 Power Efficiency Tips
Enable AMD PBO for optimal CPU performance and efficiency.
Utilize GPU undervolting for cooler operation and power savings.
Ensure proper case airflow to maintain component temperatures.
Adjust monitor refresh rate to match game FPS for efficiency.
🎯 What This Build Can Do
Extreme Gaming
Experience all modern AAA titles at 4K resolution with max settings and high refresh rates.
Professional Workstation
Seamlessly handle video editing, 3D rendering, and complex simulations with high performance.
AI Development
Train and run large AI models and machine learning algorithms efficiently with powerful hardware.
🔧 Installation Guide
Quick Checklist
- Mount the PSU with its fan aligned to your case airflow.
- Only connect cables you actually need (modular PSUs).
- Use dedicated PCIe power cables for NVIDIA GeForce RTX 5080 — no daisy-chaining.
- Boot-test with side panel open before final assembly.
⚠️ Special Note
Ensure all modular cables are fully seated into both the PSU and components for stable power delivery.
🔗 Explore More Builds
See PSU recommendations for other CPU + GPU combinations.