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Need PSUs for your high-end PC build? Then, you have come to the place. We are sharing some of the best high-end PSUs designed for RTX 5090.
High-end PCs with RTX 5080 or 5090 GPUs require a minimum of 850W or 1000W PSU. On top of that, the PSU you choose must have high-quality components inside, including capacitors, inductors, and more, to provide sustained power to high-end RTX GPUs. This is even more important if you plan on doing long gaming sessions. The power supply is the one component in your PC you should not compromise with, or else your entire PC could be at risk.
However, finding the right PSUs for high-end PC builds can be quite confusing, especially in this saturated market. That’s why we did it for you. In this article, we are showcasing all the best PSUs you should buy for high-end PC builds. The list is ranked from the one with the highest price tag and the most features to the cheapest one with the fewest features.
Note: Parts of this article are subjective and reflect the writer’s opinions.
What Are the Best PSUs You Should Buy for High-End PC Builds?
1) Cooler Master V1100 1000W SFX PSU With Platinum Rating
If you are planning to do a compact PC build, also known as a small form factor PC (SFF), then the Cooler Master V1100 is one of the best PSUs you can buy right now. Even in its tiny package, this Cooler Master power supply can deliver 1100W of power with an 80 Plus Platinum rating. This is possible thanks to Cooler Master building a powerful platform to achieve the highest possible efficiency.
The Cooler Master V1100 is fully modular and comes with the 12V-2×6 cable needed for high-end Nvidia GPUs, such as RTX 5080 or 5090.
| Specifications | Details |
| Total power | 1100W |
| 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) | SCP (Short Circuit Protection) | OTP (Over Temp Protection) | OPP (Over Power Protection) |
| Dimensions | 100mm x 125mm x 63.5mm |
| Modularity | Fully Modular |
| Warranty | 10-Year Warranty |
2) CORSAIR RM1200e (2023) ATX PSU With Gold Rating
If you don’t need an SFX power supply, you should get the CORSAIR RM1200e 2023 model instead. It is capable of delivering 1200W of power while costing almost the same as the Cooler Master PSU we discussed above.
With a 1200W power supply, you won’t ever have to worry about upgrading your CPU or GPU down the line. They will all be supported without any issues. The CORSAIR RM1200e will essentially future-proof your PC, and its 10-year warranty will further solidify your purchase.
| Specifications | Details |
| Total power | 1200W |
| Efficiency | 80 PLUS GOLD |
| ATX Specs | Fully compliant with ATX 3.1 and features a 12V-2×6 cable for PCIe 5.1 GPUs |
| Protections | OVP (Over Voltage Protection) | UVP (Under Voltage Protection) | SCP (Short Circuit Protection) | OTP (Over Temp Protection) | OPP (Over Power Protection) |
| Dimensions | 150mm x 150mm x 86mm |
| Modularity | Fully Modular |
| Warranty | 10-Year Warranty |
3) Lian Li Edge Series 1200W ATX PSU With Gold Rating
The Lian Li Edge Series is one of the most innovative PSUs we have seen this year. The rear edge of the PSU extends to provide all the power connectors, which makes it easy to connect all your PC components. The edge also has a separate connector for a fan hub, which can be magnetically attached anywhere on the case for easier management of fan cables.
This Lian Li Edge Series PSU can deliver 1200W of power, which should be enough for most PC builds. However, due to the extended edge, it’s quite a bit longer, so check your case to ensure it has enough space. That is its only caveat.
| Specifications | Details |
| Total power | 1200W |
| Efficiency | 80 PLUS GOLD |
| ATX Specs | Fully compliant with ATX 3.1 and features a 12V-2×6 cable for PCIe 5.1 GPUs |
| Protections | OVP (Over Voltage Protection) | UVP (Under Voltage Protection) | SCP (Short Circuit Protection) | OTP (Over Temp Protection) | OPP (Over Power Protection) |
| Dimensions | 182mm x 150mm x 86mm |
| Modularity | Fully Modular |
| Warranty | 10-Year Warranty on PSU and 2-Year Warranty on Hub |
4) ASUS TUF Gaming 1000W ATX PSU With Gold Rating
If you want a PSU on a budget without losing the ability to install an RTX 5090, then we recommend the ASUS TUF Gaming 1000W ATX PSU. Nvidia recommends 1000W for the RTX 5090, and this power supply has that. It is built with quality components inside.
Therefore, this power supply can handle any transient power spikes of RTX 4090 or 5090 GPUs without any issues. This is something that budget PSUs often fail to deliver, but that’s not an issue with this power supply. It also has the 12V-2×6 cable required for high-end RTX 50 Series GPUs.
| Specifications | Details |
| 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) | SCP (Short Circuit Protection) | OTP (Over Temp Protection) | OPP (Over Power Protection) |
| Dimensions | 150mm x 150mm x 86mm |
| Modularity | Fully Modular |
| Warranty | 10-Year Warranty |
5) CORSAIR RM850e (2025) ATX PSU With Gold Rating
The CORSAIR RM850e is one of the cheapest PSUs you can buy for high-end PC builds. It is rated for 850W, so it can support up to RTX 5080 and Radeon RX 9070 XT. Unfortunately, the RTX 5090 is not an option with this PSU. This is a sacrifice you will have to make when buying an affordable power supply.
However, don’t let its cheaper price tag fool you. It is built with high-quality transistors, inductors, transformers, and other components. Therefore, there will not be any issues with transient power, power factors, voltage drops, or anything else.
| Specifications | Details |
| Total power | 850W |
| 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) | SCP (Short Circuit Protection) | OTP (Over Temp Protection) | OPP (Over Power Protection) |
| Dimensions | 140mm x 150mm x 86mm |
| Modularity | Fully Modular |
| Warranty | 7-Year Warranty |
Final Thoughts
This concludes the list of all the best PSUs for high-end PC builds. For SFF builds, go with the Cooler Master V1100. For traditional ATX PCs, you go with CORSAIR RM1200e, Lian Li Edge Series, or ASUS TUF models. The exact PSU you should choose depends on your power requirements and budget. However, if you want an even cheaper PSU without sacrificing the quality or performance, then get the CORSAIR RM850e.
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