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With graphics cards demanding more power than ever, a 1000W power supply—once considered overkill—has become the new standard. If you’re looking to upgrade your setup with one, you’re in the right place. This year, we put over 20 power supplies to the test, including plenty of 1000W models. Our testing focused on the quality of the internal components and how well these PSUs performed in real-world scenarios.
With that said, I have rounded up the top four 1000W PSUs that I think are the best.
If you don’t know whether your new PC build will require a 1000W power supply or more, be sure to check out our PSU wattage calculator to check out our offerings based on your requirements.
Best 1000W Power Supply
Here are my recommendations for the best 1000W power supply based on our reviews and test results:
- Best Overall: XPG CyberCore II 1000W
- Best Performance: Corsair HX1000i Platinum
- Best SFX: Corsair SF1000L SFX Gold
- Best Budget: Enermax Revolution D.F. X 1050W
XPG CyberCore II 1000W
Best Overall 1000W Power Supply
Specifications: Size: 160 x 150 x 86mm | Efficiency Rating: 80+ Platinum | Modular: Yes (Fully) | Wattage: 1,000W | Protection: OPP, OVP, UVP, OCP, OTP, SCP, NLO, SIP | ATX 24-Pin: 1 | EPS 4+4-Pin: 2 | 12V-2×6 12+4 Pin: 1 | PCI-E 6+2-Pin: 6 | SATA: 8 | MOLEX 4-Pin: 4
Pros
- Extremely efficient
- Silent operation
- Compact design
- Tight load regulation
- 10-year warranty period
Cons
- No hybrid fan mode
- Hard-sleeved cables
Read Our XPG CyberCore II 1000W 80+ Platinum Power Supply Review
The XPG CyberCore II 1000W power supply is a solid option for anyone, regardless of their use case scenario. This unit’s compact design, silent fan, and performance make it stand out. It supports decent overclocking potential, will be perfect with the latest PC components, and will last a long time. But that’s not all; let me tell you how it performed on our test bench.
For starters, the PSU’s voltage regulation is astounding, mainly thanks to the digital controllers. The percentage difference in the 12V rail regulation was 0.66%, making it one of the most stable power supplies on our list. Furthermore, it effortlessly surpassed the 80+ Platinum requirements in our efficiency test, marking 93.40%. Lastly, the ripple performance is also decent. I expected it to be lower than 16mV at 100% load, but it will still ensure stable performance during extreme overclocking.
Here’s what Abdul Hannan, one of our hardware reviewers, had to say about the XPG CyberCore II’s reliability, performance, and efficiency in his in-depth review of the product:
The compact design and premium components of the XPG CyberCore II PSU make it a solid choice for those seeking reliability and performance in their PC builds.
What Makes It The Best Overall 1000W Power Supply?
The XPG CyberCore II 1000W has a Platinum A- Cybenetics rating, many connectors, outstanding performance while maintaining the highest efficiency standards, and a 10-year warranty. It doesn’t cost as much and is a decent pairing to achieve a new overclocking record. Hence, considering all these points, it is the best overall 1000W power supply.
| Performance: 9/10 | Value: 9/10 |
| Features: 9/10 | Efficiency: 10/10 |
Corsair HX1000i Platinum
Best Performance 1000W Power Supply
Specifications: Size: 180 x 150 x 85mm | Efficiency Rating: 80+ Platinum | Modular: Yes (Fully) | Wattage: 1000W | Protection: OPP, OVP, UVP, OCP, OTP, SCP, NLO, SIP | ATX 24-Pin: 1 | EPS 4+4-Pin: 2 | 12V-2×6 (12+4)-Pin: 1 | PCI-E 6+2-Pin: 4 | SATA: 8 | MOLEX 4-Pin: 8
Pros
- Exceptional voltage ripple performance
- Hybrid fan mode
- Top-tier build quality
- Lots of connectors provided
- 10-year warranty period
- iCUE software control feature
Cons
- No 12VHWPR native connector
- Expensive
Read Our Corsair HX1000i Platinum Power Supply Review
Are you looking for a power supply you can control freely? If so, the Corsair HX1000i Platinum might be a decent choice because of the iCUE software control feature. You can easily change the fan speeds and play around with the PSU as you wish. But that’s not the only reason I love this unit. Other reasons include its outstanding performance, build quality, and warranty period. The only things I dislike about the PSU are that it doesn’t come with a native 12VHPWR connector and has a significantly higher price.
On my test bench, the PSU showed varied results. For example, the voltage regulation percentile difference was pretty good at 0.91. Still, I would have preferred a tighter regulation because it showcases the quality of the PSU’s design, especially for higher-rated components. On the other hand, the HX1000i is quite efficient, showing an average of 92.79% efficiency, going over the 80+ Platinum rating, placing only second to the XPG CyberCore II on this list. Lastly, the ripple suppression test showcased a maximum of 12mV at 100% load, completely sweeping off the competition.
This is how I described the power supply in my review:
This time around though, HX1000i clearly manages to live up to the same old tradition with its exceptional voltage ripple results.
What Makes It The Best Performance 1000W Power Supply?
A few reasons make the Corsair HX1000i Platinum the best performance 1000W power supply. Whether you note its efficiency, load regulation, or ripple suppression, it doesn’t lose to anyone without putting up decent competition. Its amazing features, including manual fan control, many connectors for your storage devices, and a 10-year warranty, help improve its value despite its higher price.
| Performance: 10/10 | Value: 8/10 |
| Features: 9/10 | Efficiency: 8/10 |
Corsair SF1000L SFX Gold
Best SFX 1000W Power Supply
Specifications: Size: 130 x 125 x 63.5mm | Efficiency Rating: 80+ Gold | Modular: Yes (Fully) | Wattage: 1000W | Protection: OPP, OVP, UVP, OCP, OTP, SCP | ATX 24-Pin: 1 | EPS 4+4-Pin: 2 | 12VHPWR Cable: 1 | PCI-E 6+2-Pin: 2 | SATA: 12 | MOLEX 4-Pin: 3
Pros
- Superior performance to many full-ATX power supplies
- Decent pricing
- SFX-to-ATX adapter bracket
- Exceeds 80+ Gold efficiency
- Impressive ripple suppression performance
- Handles overclocking well
Cons
- Noisy at 50% load
- High OCP triggering point on minor rails
Read Our Corsair SF1000L SFX Gold Power Supply Review
Smaller PC builds have been gaining a lot of attention recently, and I understand why. If you don’t have enough space on your desk but want a personal PC that packs a lot of performance, the Corsair SF1000L SFX Gold PSU will help fulfill your wishes. It has a size of 130 x 125 x 63.5mm, doesn’t cost much, performs better than many full-sized power supplies, and handles overclocking decently well. It has its hiccups as well, but beyond that, it’s a remarkable SFF PSU, and I have tests to prove it.
For example, the most notable aspect of this power supply is its ripple suppression performance, where it showed 12mV at 100% load — a score not even ATX power supplies can easily achieve. Similarly, in its efficiency test, it easily crosses 80+ Gold and touches the Platinum level with an efficiency of 92.33%. The voltage regulation is also extremely tight, making it impressive for most use cases. Except for its noise levels crossing 41.62dB(A) at 115V AC input, there’s nothing bad about this component.
We were in absolute awe during our testing. This is how we summarized the power supply:
The Corsair SF1000L PSU is an SFL power supply that exceeds expectations with its performance and efficiency. Slightly larger than SFX PSUs, it offers better results under max load due to improved heat dissipation.
What Makes It The Best SFX 1000W Power Supply?
Most aspects of the Corsair SF1000L PSU exceed its competition, which makes it the best SFX 1000W power supply. Namely, its ripple suppression, voltage regulation, and efficiency exceeding its 80+ Gold rating are eye-openers. Moreover, it is affordable and supports longevity by including an SFX-to-ATX adapter bracket, making it more viable for customers planning a smaller PC build temporarily.
I like the Corsair SF1000L SFX Gold power supply the most for multiple reasons. Firstly, it has impressive performance and supports decent overclocking. Secondly, it doesn’t cost much. Thirdly, it’s perfect for SFX and ATX PC builds. Lastly, it easily exceeds 80+ Gold efficiency. Honestly, I don’t see many reasons to skip over this power supply if you’re looking for something in the 1000W range.
– Arsalan Shakil
| Performance: 9/10 | Value: 9/10 |
| Features: 8/10 | Efficiency: 9/10 |
Enermax Revolution D.F. X 1050W
Best Budget 1000W Power Supply
Specifications: Size: 140 x 150 x 86mm | Efficiency Rating: 80+ Gold | Modular: Yes (Fully) | Wattage: 1050W | Protection: OPP, OVP, UVP, OCP, OTP, SCP | ATX 24-Pin: 1 | EPS 4+4-Pin: 2 | 12VHPWR Cable: 1 | PCI-E 6+2-Pin: 4 | SATA: 12 | MOLEX 4-Pin: 6
Pros
- Decent efficiency
- Tight voltage regulation on 12V rail
- Great price-to-performance ratio
- Outstanding build quality
- Lots of connectors
Cons
- Inadequate voltage ripple performance
Read Our Enermax Revolution D.F. X 1050W Power Supply Review
For the last power supply, we have the Enermax Revolution D.F. X 1050W, which is suited for anyone looking to future-proof their PC while staying on a lower budget. This power supply has many things to love, such as its impressive price-to-performance ratio, outstanding build quality, and decent overall performance. I suggest looking into this component if you’re buying an affordable yet decent power supply for 1440p or 4K gaming. Why, you ask? Here are a few specifics from our testing.
Firstly, the power supply has extremely tight voltage regulation, capping at 11.87V at 100% load on the 12V rail, with a differential of only 0.75, surpassing the Corsair HX1000i Platinum. Moreover, the Revolution D.F. X easily crosses 80+ Gold efficiency, reaching Platinum with an efficiency of around 92.33%. We have seen better from 80+ Gold PSUs, but remember, this is a budget option. Lastly, the ripple suppression crossed 38mV at 100% load. Unfortunately, this isn’t good if you want to overclock your PC.
In our in-depth review, Abdul Hannan summarized the Enermax Revolution D.F. X 1050W’s performance and value by stating the following:
If you’re in the market for a reliable and competitive PSU that offers a blend of performance and innovative features, the Enermax Revolution D.F. X 1050W is a solid choice. This PSU is well-suited for a variety of user profiles, including gaming enthusiasts, energy-conscious users, and those looking for future-proof components without breaking the bank.
What Makes It The Best Budget 1000W Power Supply?
While providing impressive build quality with Japanese capacitors, a 10-year warranty period, a zero dust rotation feature, and decent performance for most use cases, the Enermax D.F. X 1050W power supply is a treat for many with a lower budget. Surprisingly, the power supply has 14 built-in lighting presets on its side panel, making it the best budget 1000W power supply.
| Performance: 8/10 | Value: 10/10 |
| Features: 9/10 | Efficiency: 8/10 |
Comparing The Cables
Below, I have attached a table that compares the total wattage and amount of several cables for each power supply I have added offers. You can easily browse the specifications through the table and determine which power supply best fits your requirements.
| Power Supply | Wattage (W) | ATX 24-Pin | EPS 4+4-Pin | 12V-2×6 12+4 Pin | PCI-E 6+2-Pin | SATA | MOLEX 4-Pin |
|---|---|---|---|---|---|---|---|
| XPG CyberCore II 1000W | 1000 | 1 | 2 | 1 | 6 | 8 | 4 |
| Corsair HX1000i Platinum | 1000 | 1 | 2 | 1 | 4 | 8 | 8 |
| Corsair SF1000L SFX Gold | 1000 | 1 | 2 | 1 | 2 | 12 | 3 |
| Enermax Revolution D.F. X 1050W | 1050 | 1 | 2 | 1 | 4 | 12 | 6 |
Our Test Results For The Best 1000W Power Supply
We have added our test results and benchmarks of all the power supplies tested in this article to back our claims. After all, is there a more logical way to determine which power supply is best for you without looking at how it performs in a real-world setting?
Power Supply Key Terms
There are many jargon and difficult words associated with power supplies. New PC builders often get caught up on certain terms and may choose the wrong power supply for their use case scenario. To help you avoid such circumstances, here are a few PSU key terms you should know:
- 12VHWPR Cable: Short for 12-Volt High Power Cable, the cable was initially introduced in ATX 3.0 power supplies to support more power-hungry graphics cards, like NVIDIA’s flagship RTX 4090 and below. Before you purchase your power supply, ensure the GPU cable is compatible with your graphics card’s connector. Otherwise, you’ll have to use an adapter.
- Efficiency: The efficiency of a power supply is calculated by how effectively it can convert AC power to DC power. These efficiency ratings start at 80+ Bronze, Silver, Gold, Platinum, and Titanium. Most decent power supplies have an 80+ rating of Gold or higher. I don’t recommend purchasing anything below that efficiency for a high-end PC build.
- ATX 3.0: It is one of the latest PSU standards (now ATX 3.1) and effectively handles the high power requirements of modern computers. All ATX 3.0 power supplies have a 12VHPWR cable, while all ATX 3.1 power supplies have a 12V-2×6 cable.
- Voltage Regulation: A power supply’s voltage regulation involves maintaining a constant output voltage, even when the load changes. The load usually changes when you plug in (or remove) additional devices or when the input voltage changes.
- Voltage Ripple: This term refers to the small fluctuations or variations in a PSU’s output voltage. It is usually caused during the AC-to-DC conversion process. Ideally, the voltage ripple should be 0mV, but that’s not humanely possible. Therefore, a lower voltage ripple means greater overclocking possibilities for a power supply.
- Wattage: A power supply’s wattage measures its maximum power output capacity, measured in Watts (W). Usually, you always want a power supply that can deliver significantly higher wattage than your current PC demands to ensure better future-proofing and more stable wattage transfer.
How We Picked The Best 1000W Power Supply
A lot of factors go into consideration before we choose a PC component. The same goes for a power supply. We tested several PSUs, factored in their performance, modularity, compatibility, and build quality, and then selected the best ones. Here is a quick rundown of what you should look for when doing your research:
- Performance: One of the most important aspects to consider when buying a power supply is its performance. That includes the power supply’s ripple suppression, load regulation, PSU efficiency, and transient response. A decent power supply will always be more stable and reliable under heavier loads. After all, what’s the point of building a high-end PC that requires a 1000W PSU if you’re going to fit a cheap, unreliable PSU?
- ATX 3.0/3.1 Compatibility: ATX 3.0 and 3.1 compatibility are, arguably, the most important aspects of choosing a power supply. You can’t choose a PSU if it’s incompatible with your graphics card, right? Therefore, I only included power supplies that support the latest standards and provide reliable power in a cable that won’t melt anytime soon.
- Modularity: Although not one of the most important aspects, I considered a power supply’s modularity because it is easier to build with and doesn’t cost a lot of extra money. Fully modular power supplies help with cable management and increase airflow, so they’re a good addition to the PC’s aesthetics and overall performance.
- Build Quality: I always pick power supplies with the highest build quality because they are only as good as their capacitors and internals. A decent power supply will have a sturdy build quality that matches its warranty. Therefore, our in-depth reviews always have a teardown analysis to determine whether the capacitors are cut out for the job.
FAQs
If you want to future proof your build, the higher-wattage power supply will always be a decent choice. So, I recommend you opt for the 1000W PSU.
Yes. An RTX 4090 can run on a 1000W power supply. If you want to know the specific wattage calculation, please go through our PSU wattage calculator, which is linked at the top of the article!
Yes. Most modern power supplies are extremely reliable and can most likely run for longer than 5 years.
Thank you! Please share your positive feedback. 🔋
How could we improve this post? Please Help us. 😔
[Errors Troubleshooting Expert]
Arsalan Shakil (aka GuyThatDoesEverything on YouTube) is a PC Tech Enthusiast and Electronic Geek. With over 10+ years of experience in Electronics, he then decided to explore Software Engineering to design embedded products and automate existing hardware solutions.
When he started tearing down old cameras to understand how they worked, he was shocked (literally, when he got zapped by a flash discharge capacitor), giving him the power (debatable) to fall in love with videography/photography. He also started making some fun videos that later became YouTube tech reviews.
Skills:
- 10+ years of experience in Electronics design, embedded solutions, and prototyping
- Majored in Software Engineering
- Research paper publication in IEEE for Embedded Military Uniform & LoRa WAN wireless technology
- Specialized in IoT Solutions
- PC Enthusiast & PC Modder
In his local region, he’s known to expose cheap PSU brands, often claiming fake certification or false claims on the box. He’s a true nerd and needed some friends in his life. Then he met some guys who work at Tech4Gamers, and they also came out to be equal nerds who suggested he join Tech4Gamers as a Hardware Expert.
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