Best PSU for Ryzen Threadripper 9970X & RTX 4080
Your AMD Ryzen Threadripper 9970X and NVIDIA GeForce RTX 4080 combination delivers exceptional performance for demanding workloads. This enthusiast-grade system can handle 4K gaming at high framerates, intensive content creation, and professional workloads simultaneously.
1200W
770W
64%
Enthusiast
🏆 Recommended Power Supplies
Hand-picked for your 1200W target — sorted by overall value.
ASUS TUF Gaming 1200W Gold (1200 Watt, ATX 3.0 Compatible Fully Modular Power Supply, 80+ Gold Certified, Military-Grade Components, Dual Ball Bearing, Axial-tech Fan, PCB Coating, 10 Year Warranty)
Excellent efficiency rating, ideal for extended use with this AMD Ryzen Threadripper 9970X and NVIDIA GeForce RTX 4080 configuration.
Efficiency80+ Gold
FormATX
CablesFull-Modular
Price$204.99
MONTECH Century II – 1200W High-End ATX Gaming Power Supply – 80 Plus Gold & Cybenetics Platinum – Fully Modular – ATX 3.1 & PCIe 5.1 Ready with 12V-2×6 Cable – 10 Years Warranty
Excellent efficiency rating, ideal for extended use with this AMD Ryzen Threadripper 9970X and NVIDIA GeForce RTX 4080 configuration.
Efficiency80+ Gold
FormATX
CablesFull-Modular
Price$129.90
be quiet! Pure Power 12 M 1200W Modular Power Supply | 80 Plusu00ae Gold | ATX 3.1 | PCIe 5.0 GPUs and 6+2 pin connectors | 12VHPWR Cable Included | Silent 120mm be quiet! Fan – BN513 I 10 Year Warranty
Excellent efficiency rating, ideal for extended use with this AMD Ryzen Threadripper 9970X and NVIDIA GeForce RTX 4080 configuration.
Efficiency80+ Gold
FormATX
CablesFull-Modular
Price$179.90
CORSAIR HX1500i (2025) Fully Modular Ultra-Low Noise ATX Power Supply with 12V-2×6 Cable u2013 ATX 3.1 & PCIe 5.1 Compliant, Cybenetics Platinum Efficiency, Fluid Dynamic Bearing Fan u2013 Black
Want extra headroom for future GPU upgrades or overclocking? This 1500W unit gives you peace of mind.
Efficiency80+ Gold
FormATX
CablesFull-Modular
Price$389.99
Amazon.com prices as of 03/23/2026 19:54 GMT+0000 —
Details
Product prices and availability are accurate as of the date/time indicated and are subject to change.
Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
As an Amazon Associate, we earn from qualifying purchases.
📊 Quick Comparison
See the key differences at a glance.
| # | Model | Wattage | Efficiency | Modular | Price |
|---|---|---|---|---|---|
| 1 | ASUS TUF Gaming 1200W Gold (1200 Watt, ATX 3.0 Compatible Fully Modular Power Supply, 80+ Gold Certified, Military-Grade Components, Dual Ball Bearing, Axial-tech Fan, PCB Coating, 10 Year Warranty) | 1200W | 80+ Gold | Full-Modular | $204.99 |
| 2 | MONTECH Century II – 1200W High-End ATX Gaming Power Supply – 80 Plus Gold & Cybenetics Platinum – Fully Modular – ATX 3.1 & PCIe 5.1 Ready with 12V-2×6 Cable – 10 Years Warranty | 1200W | 80+ Gold | Full-Modular | $129.90 |
| 3 | be quiet! Pure Power 12 M 1200W Modular Power Supply | 80 Plusu00ae Gold | ATX 3.1 | PCIe 5.0 GPUs and 6+2 pin connectors | 12VHPWR Cable Included | Silent 120mm be quiet! Fan – BN513 I 10 Year Warranty | 1200W | 80+ Gold | Full-Modular | $179.90 |
| ⬆️ | CORSAIR HX1500i (2025) Fully Modular Ultra-Low Noise ATX Power Supply with 12V-2×6 Cable u2013 ATX 3.1 & PCIe 5.1 Compliant, Cybenetics Platinum Efficiency, Fluid Dynamic Bearing Fan u2013 Black Upgrade | 1500W | 80+ Gold | Full-Modular | $349.99 |
🔌 Power Budget
Your system uses 64% of the recommended PSU output — well within the efficient operating range.
1200W (Recommended)
System draw: 770W
Headroom: 430W (30%)
💡 Why 1200W?
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 Windows/OS power saving features when not gaming to reduce power consumption and heat output.
Consider investing in a high-quality UPS to protect your high-end components from power surges and outages.
Monitor component temperatures and adjust fan curves for optimal balance between cooling performance and noise.
🎯 What This Build Can Do
Gaming
Suitable for modern games with good performance based on your system configuration.
Productivity
Great for office work, multitasking, and everyday computing tasks.
Content Creation
Can handle basic video editing and content creation workflows.
🔧 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 4080 — no daisy-chaining.
- Boot-test with side panel open before final assembly.
⚠️ Special Note
Your NVIDIA GeForce RTX 4080 requires the new 12VHPWR power connector. Ensure your PSU includes this connector or use the appropriate adapter, and make sure it's fully inserted to prevent connection issues.
🔗 Explore More Builds
See PSU recommendations for other CPU + GPU combinations.