The best 1000W PSU is going to be overkill for a lot of gaming PCs but we have seen it become a popular choice for those looking to build a high-end gaming PC. When building more affordable sub-$1000 gaming PCs, there are a lot of good PSU options, however, as we progress up to the high-end and enthusiast systems, a lot more care should be taken to ensure you get the perfect PSU for the job.
Choosing the best power supply for gaming is crucial when dealing with powerful components. A new system featuring the likes of an RTX 4090 graphics card, for example, is going to need PSUs around 850W and higher. The best 1000W power supply is recommended here despite being more wattage than you actually need in that scenario. The PSUs we recommend here all feature lengthy warranties, meaning that they will last well into the next generation of GPUs, so planning ahead and giving yourself some headroom is actually a smart investment.
Do you need a 1000W PSU?
1000W, even by today’s standards is an incredibly high amount of power. Very few actually require a PSU like this but is this you? If you are building the very best gaming PC money can buy, then yes, a 1000W PSU may be overkill, however, it is protecting your investment for longer, giving you the ability to upgrade into future generations of CPU and GPUs.
Power supplies with 1000 wattage are also sometimes required to power enthusiast-level PCs, maybe you are building a deep learning machine or an intricate water-cooled system with a ridiculous amount of RGB and fans. In either case, we recommend a 1000W PSU, however, if this isn’t you, we recommend using a PSU calculator to find what wattage you need for your system and then taking it from there.
Best 1000W PSU: Corsair RM1000x Shift
- Excellent performance
- ATX 3.0 & PCIe 5.0 Compliant
- Modular connectors with optimized positioning
- No specific cons
Corsair is one of the best PSU manufacturers out there, offering high-quality units that your system can rely on. You could always opt for a more affordable solution but the performance and features of this model stand out. Aside from being ATX 3.0 and PCIe 5.0 Compliant, this fully modular PSU comes with Corsair’s type 5 gen 1 micro-fit connectors – another step to making installation a piece of cake. Other than that, you can expect consistent, low-noise, power output for many years. This PSU will fit inside any case that supports ATX format (210mm/ 8.3″).
Next best 1000W power supply: MSI MPG A1000G
MSI MPG A1000G
- PCIE 5 & ATX 3.0
- Efficient & reliable
- 10-year limited warranty
- Priced for the enthusiast
One of the best 1000W power supplies you can get right now is the MSI MPG A1000G, a quality, well-made unit. With ATX 3 and PCIE 5, this PSU is ready to power the best gaming PCs out there. Other than that you are getting a model that is highly efficient 10-year limited warranty, giving you piece of mind.
A PSU of this caliber is more of an investment and while it may be a surprise to see MSI come into a PSU best of, the MPG 1000G is a top-notch choice for those looking for a great balance of features. This high-end PSU is more affordable than the ASUS and would be a solid option for any powerful gaming PC builds.
Best 1000W platinum PSU: ASUS ROG Thor
ASUS ROG Thor 1000W Platinum II
- Perfect for the best graphics cards
- High level efficiency
- Insane features including OLED display
- Overkill for any GPU below the RTX 4090
Although the ASUS ROG Thor may be considered excessive, it’s a high-end PSU that perfectly complements the powerful components of your new system. It provides ample support to the RTX 4090, everything below it, and can easily handle future upgrades as well.
It may be a surprise to see MSI come into a PSU best of, however the MPG 1000G is a top-notch choice for those looking for a great balance of features. This high-end PSU is more affordable than the ASUS and would be a solid option for any powerful gaming PC builds.
Best value 1000W PSU: EVGA SuperNOVA 1000 G5
EVGA SuperNOVA 1000 G5
- Quality, reliable PSU from the reputable EVGA
- Not ATX 3 compliant
The EVGA Supernova 1000 G5 is another great PSU that offers high energy efficiency and a fully modular design. This PSU is 80+ Gold certified, and it has a maximum energy efficiency of up to 93%. It also comes with an eco-mode that allows the fan to operate quietly under low to medium loads. EVGA provides a 10-year warranty for this unit.
Best efficient 1000W PSU: Seasonic PRIME TX-1000
Seasonic PRIME TX-1000
- Highly efficient
- Near silent
- You are paying for the quiet operation here
The Seasonic Prime 1000 Titanium is a top-of-the-line PSU that offers exceptional energy efficiency and reliable performance. This PSU is 80+ Titanium certified, meaning it has a maximum energy efficiency of up to 96%. It also features a fully modular design and a 135mm fan that operates quietly. Seasonic provides a 12-year warranty for this unit.
Best 1000W PSU for Mini-ITX: Corsair SF1000L
- Reliable, quality, and efficient
- ATX 3/ PCIe 5 compliant
- Great acoustic performance for size
- No specific cons
When building a smaller form factor gaming PC with high-end components, it can be hard to find a suitable power supply. Well not to worry, Corsair has the SF1000L, a reliable SFX PSU that ticks all the necessary boxes. This is efficient, modular, ATX 3 compliant, and basically silent. So if you are looking to build out your next gen PC while saving some space, make sure you grab one of the best PSUs for the job.
1000W power supply vs 1200W
We always recommend aiming higher than your power needs if you can afford it. Most gamers are probably going to be just fine for years to come with a 1000W PSU, after all it can handle an RTX 4090 with plenty power to spare. Still, a quality PSU will last for years, with most quality units featuring lengthy 10+ year warranties. So it is a better idea to invest for the future. Are you going to buy a flagship GPU in the next 10 years? If yes, you may want to opt for a 1200W or even a 1300W PSU instead.
1000W Power Supply FAQs
There are quite a few different models from a variety of brands that would suit any PC. Regardless, we think that Corsair’s latest 1000W RMx Shift PSU is the best, packed with features and quality for a reasonable price.
In many cases yes, 1000W could be overkill. No graphics card or gaming PC really needs 1000W aside from some extreme circumstances. That being said, if you are running a high-end PC, consider investing in a PSU that has “headroom”. This will give you longevity and room to grow into for future upgrades.
A quality PSU, whether it’s 1000W or otherwise, is incredibly important for any PC for obvious reasons – protect and power your other components! The best 1000W PSU offers high efficiency, excellent features, and a lengthy warranty, making them a smart investment for the long haul. Choosing the best for the job ensures that your system has sufficient power to handle any demanding tasks, while also providing excellent features, high efficiency, and a lengthy warranty.