Best PSU for AMD Ryzen Threadripper PRO 7995WX and NVIDIA GeForce RTX 5090
+
NVIDIA GeForce RTX 5090
Configuration Analysis
System Performance Assessment
This system represents the pinnacle of performance. With a Threadripper PRO 7995WX and RTX 5090, it's capable of handling the most demanding workloads, including professional content creation (video editing, 3D rendering), scientific simulations, and extreme gaming at the highest resolutions and refresh rates. Expect unparalleled performance in all areas.
Recommended Power Supplies
Corsair HX1500i Fully Modular Ultra-Low Noise ATX Power Supply – ATX 3.0 & PCIe 5.0 Compliant – Fluid Dynamic Bearing Fan – CORSAIR iCUE Software Compatible – 80 Plus Platinum Efficiency – Black
NZXT C1500 Platinum ATX 3.1 | Fully Modular Low-Noise PC Gaming Power Supply | 1500 Watts | 80 Plus Platinum| Dual 12V-2×6 Connectors | Zero Fan Mode | 100% Japanese Capacitors | Black
That 1500W NZXT PSU is perfect! It's got the headroom and dual 12V-2×6 connectors your Threadripper/RTX 5090 beast needs, with silent operation.
Corsair RMX Series (2021), RM1000x, 1000 Watt, Gold, Fully Modular Power Supply (Renewed)
The RM1000x provides ample, stable, and efficient power for your high-end Threadripper/RTX 5090 build, with headroom for overclocking thanks to its 1000W and Gold rating.
Comparison Table
| Model | Wattage | Efficiency | Form Factor | Modularity | Price | Best For |
|---|---|---|---|---|---|---|
| Corsair HX1500i Fully Modular Ultra-Low Noise ATX Power Supply – ATX 3.0 & PCIe 5.0 Compliant – Fluid Dynamic Bearing Fan – CORSAIR iCUE Software Compatible – 80 Plus Platinum Efficiency – Black | 1500W | 80+ Gold | ATX | Full-Modular | $349.99 | Overall Value |
| NZXT C1500 Platinum ATX 3.1 | Fully Modular Low-Noise PC Gaming Power Supply | 1500 Watts | 80 Plus Platinum| Dual 12V-2×6 Connectors | Zero Fan Mode | 100% Japanese Capacitors | Black | 1500W | 80+ Gold | ATX | Full-Modular | $354.95 | Energy Efficiency |
| Corsair RMX Series (2021), RM1000x, 1000 Watt, Gold, Fully Modular Power Supply (Renewed) | 1000W | 80+ Gold | ATX | Full-Modular | $119.95 | Energy Efficiency |
Why This Wattage?
Power Calculation
The recommended PSU wattage is calculated based on the total power draw of your CPU (AMD Ryzen Threadripper PRO 7995WX) and GPU (NVIDIA GeForce RTX 5090), 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
Utilize the PSU's monitoring software (Corsair iCUE or NZXT CAM) to track power consumption and optimize fan curves for silent operation when possible.
Enable Eco Mode (Zero Fan Mode) on the PSU if available, allowing the fan to remain off during low to moderate loads for near-silent operation.
Consider undervolting the RTX 5090 slightly. This can reduce power consumption and heat output without significantly impacting performance.
Special Installation Note
Ensure you use dedicated PCIe 5.0 cables from the PSU directly to the RTX 5090; avoid using adapters or daisy-chaining cables as this can lead to instability or damage due to the high power draw of the GPU. Double-check that the 12V-2×6 connector is properly seated.
Usage Scenarios
8K Filmmaking
Effortlessly edits and renders complex 8K video projects with multiple layers, color grading, and visual effects in real-time.
Scientific Simulation
Runs complex simulations in fields like astrophysics or drug discovery, processing massive datasets and generating accurate results quickly.
Ultimate Gaming
Provides unparalleled gaming performance at maximum settings, even with ray tracing enabled, at 4K or higher resolutions and high refresh rates.
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 5090 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 HX1500i delivers stable, efficient power for your high-end Threadripper/RTX 5090 build, with headroom for overclocking and future upgrades.