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The Nvidia RTX 5090 is designed for 4K gaming and is equipped with a lot of power. Here are some high-wattage PSUs that can handle this GPU.
The Nvidia RTX 5090 is the most powerful gaming GPU as of this writing, and it consumes almost 600W of power. Therefore, you can’t install it in any PC with an ordinary power supply. Besides, this graphics card can cause transient power spikes of up to 900W for a second or two. Therefore, you need a high-wattage PSU that is designed to handle the high transient power spikes of the RTX 5090 GPU.
In this article, we are showcasing some of the best PSUs designed to handle the Nvidia RTX 5090 and its transient spikes.
Note: Parts of this article are subjective and reflect the writer’s opinions. Also, the prices mentioned herein are subject to change.
What Are the Best PSUs for Nvidia RTX 5090?
1) Corsair HX1500i PSU
The Corsair HX1500i is an extremely high-wattage PSU that will serve for a decade or more. In fact, it even comes with a 10-year warranty, so you can rest easy knowing the new power supply is fully backed. It has a total power rating of 1500W, which is significantly higher than what the Nvidia RTX 5090 asks for. Therefore, you will be able to add multiple high-power components and accessories to your PC without choking the PSU. If you want a power supply for long-term usage, the Corsair HX1500i is the one to get, even if it costs a bit more.
| Specifications | Values |
|---|---|
| Total power | 1500W |
| Efficiency | 80 PLUS Platinum |
| ATX Specs | Fully compliant with ATX 3.1 and features a 12V-2×6 cable for PCIe 5.1 GPUs |
| Protections | OVP (Over Voltage Protection) | UVP (Under Voltage Protection) | OCP (Over Current Protection) | SCP (Short Circuit Protection) | OTP (Over Temp Protection) | OPP (Over Power Protection) |
| Dimensions | 200mm x 150mm x 86mm |
| Modularity | Fully Modular |
| Warranty | 10 years |
2) ASUS ROG Strix PSU
ASUS has achieved a perfect balance between power, thermals, and noise with their 1200W ROG Strix PSU. It doesn’t have the 1500W of power that the Corsair power supply above has, but its performance and transition between different voltages are more fine-tuned. This ASUS power supply is also equipped with a silent fan and a large heatsink, which is usually not found in other PSUs. It allows the ASUS ROG Strix power supply to run in fanless mode for longer, even under some load from the Nvidia RTX 5090.
Therefore, it delivers a noiseless performance and keeps your gaming sessions noise-free. Also, ASUS went a step forward and equipped it with GaN-based MOSFETs for higher power efficiency and lower temperatures.
| Specifications | Values |
|---|---|
| Total power | 1200W |
| Efficiency | 80 PLUS Platinum |
| ATX Specs | Fully compliant with ATX 3.1 and features a 12V-2×6 cable for PCIe 5.0 GPUs |
| Protections | OVP (Over Voltage Protection) | UVP (Under Voltage Protection) | OCP (Over Current Protection) | SCP (Short Circuit Protection) | OTP (Over Temp Protection) | OPP (Over Power Protection) |
| Dimensions | 160mm x 150mm x 86mm |
| Modularity | Fully Modular |
| Warranty | 10 years |
3) Lian Li Edge Series 1300W PSU
The Lian Li Edge Series 1300W is one of the most unique PSUs of all time. It has an innovative L-shaped design, which will help you easily insert and unplug connectors, especially in dual-chamber cases where power supplies are located in difficult-to-reach positions. This power supply also comes with a fan hub, which you attach to its body or anywhere in the case. This is particularly useful for users who plan to connect six or more fans. Also, with 1300W of power, this Lian Li Edge PSU will allow you not only to connect RTX 5090 but also other power-hungry components easily without any issues.
| Specifications | Values |
|---|---|
| Total power | 1300W |
| Efficiency | 80 PLUS Platinum |
| ATX Specs | Fully compliant with ATX 3.1 and features a 12V-2×6 cable for PCIe 5.1 GPUs |
| Protections | OVP (Over Voltage Protection) | UVP (Under Voltage Protection) | OCP (Over Current Protection) | SCP (Short Circuit Protection) | OTP (Over Temp Protection) | OPP (Over Power Protection) |
| Dimensions | 182mm x 150mm x 86mm |
| Modularity | Fully Modular |
| Warranty | 10 years |
4) be quiet! Pure Power 12 M PSU
If you want a bit more affordable PSU without too many compromises, the be quiet! Pure Power 12 M is the one we will recommend to you. It costs under $170, yet it delivers 1200W of power while maintaining near-silent noise levels. There, you aren’t making any major compromise by opting for a more affordable PSU like this one. Despite being cheaper, the Pure Power 12 M is fully compliant with the latest ATX 3.1 specifications. Therefore, you can add an Nvidia RTX 5090 GPU without any worry.
| Specifications | Values |
|---|---|
| Total power | 1200W |
| Efficiency | 80 PLUS GOLD |
| ATX Specs | Fully compliant with ATX 3.1 and features a 12V-2×6 cable for PCIe 5.0 GPUs |
| Protections | OVP (Over Voltage Protection) | UVP (Under Voltage Protection) | OCP (Over Current Protection) | SCP (Short Circuit Protection) | OTP (Over Temp Protection) | OPP (Over Power Protection) |
| Dimensions | 160mm x 150mm x 86mm |
| Modularity | Fully Modular |
| Warranty | 10 years |
5) CORSAIR RM1000e (2025)
The CORSAIR RM1000e 2025 is the cheapest PSU on this list, so it has some compromises. The first compromise is its 1000W, which is the bare minimum recommended by Nvidia. It is a good rule of thumb to always buy a power tier above what is recommended because of transient power spikes. However, considering its $149.99 price tag, 1000W of power is acceptable. Also, under full load, the noise levels are a bit higher compared to other power supplies, but everything runs just fine. Besides, Corsair provides a 7-year warranty for your peace of mind.
| Specifications | Values |
|---|---|
| Total power | 1000W |
| Efficiency | 80 PLUS GOLD |
| ATX Specs | Fully compliant with ATX 3.1 and features a 12V-2×6 cable for PCIe 5.1 GPUs |
| Protections | OVP (Over Voltage Protection) | UVP (Under Voltage Protection) | OCP (Over Current Protection) | SCP (Short Circuit Protection) | OTP (Over Temp Protection) | OPP (Over Power Protection) |
| Dimensions | 140mm x 150mm x 86mm |
| Modularity | Fully Modular |
| Warranty | 7 years |
Final Thoughts
The Corsair HX1500i, ASUS ROG Strix PSU, and Lian Li Edge are three great options for the Nvidia RTX 5090. However, if you want a more budget alternative, you can buy the be quiet! Pure Power 12 M, which is still a decent option. The CORSAIR RM1000e is for users on a really tight budget, and it will do the job just fine.
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