The PSU of any computer is the heart of your system. Many power supply products are available for gaming PC builds, and more power handles most high-end games and graphics cards. Do you really need a 1000-watt power supply? You do if you plan to use high-performance GPUs in your build. Many of these graphics processing units are power-hungry and recommend at least 650W, meaning you will really need a minimum of 850W for breathing room.
Choosing the best power supply for gaming is crucial when using powerful components. Our best 1000-watt power supply of 2023 and the other five comparable products may all be more than you need in most gaming or other high-performance scenarios. However, the extra capacity is nice to have for anything you may do in the future. Plus, most are affordably priced and warranted for at least 10 years, so they are a sound investment.
After reviewing numerous power supplies, here is the best 1000-watt power supply of 2023 plus five more options:
- Best Overall: MSI MPG A1000G
- Most Efficient: Seasonic PRIME TX-1000
- Best 1000W for ATX Builds: EVGA SuperNOVA 1000 G5
- Best RGB: GAMEMAX 1050W PSU
- Best Cooling Technology: ASUS ROG STRIX 1000W Gold PSU
- Most Affordable: Pystar 1000W Power Supply
#1 Best Overall 1000-Watt Power Supply of 2023: MSI MPG A1000G
- 1000W PSU
- Native 16 PIN PCIe connector
- Fully modular
- 80 Plus Gold Certified
- Japanese 105°C capacitors
- 10-year limited warranty
The Best Overall 1000-Watt Power Supply of 2023 is the MSI MPG A1000G for its overall combination of top features and affordability. Your search for PSUs across the Internet may turn up products with better this or that, but this power supply unit has the best of everything for a comprehensive PSU with power to spare and all the amenities you need for advanced gaming builds.
This PSU features PCIe-5 technology to support 5th-generation graphics cards and ATX 3.0 for stable and high-efficiency performance. This power supply has a fully modular design for easy connections, measuring only 11.5 x 9.5 x 5.4 inches and weighing 6.6 pounds. It is rated 80 Plus Gold Certified for maximum performance in high-intensity gaming applications.
Ten different ports allow for several plug-in configurations, including new 16-pin cables. Simplify your PC build by using only the cables needed. The small size fits easier into compact cases, allowing more room for airflow and other components. This 1000W PSU has a 10-year limited warranty from the manufacturer. Check out the MSI MPG A1000G on Amazon.
|This 1000-watt PSU features PCIe-5 technology to support 5th-generation graphics cards.||Most 1000W PSUs generate high heat during extended loads and require robust PC cooling systems.|
|The small 11.5 x 9.5 x 5.4-inch and 6.6-pound size with modular design takes less space in your PC case.|
|This power supply is rated 80 Plus Gold Certified and delivers maximum performance in high-intensity gaming applications.|
|The MSI MPG A1000G uses 100% Japanese 105° C capacitors that are known for their reliability.|
|This product comes with a 10-year limited warranty.|
Most Efficient 1000-Watt Power Supply of 2023: Seasonic PRIME TX-1000
The Seasonic PRIME TX-1000 is our Most Efficient 1000-Watt Power Supply of 2023 for exceptional energy efficiency and reliable performance. This top-of-the-line PSU has a high 80 Plus Titanium certification because it delivers up to 96% efficiency. Plus, the 135mm fluid dynamic ball-bearing cooling fan operates silently in two user-controlled modes while keeping this compact powerhouse at optimal operating temperatures even during high load periods.
The 6.7 x 6 x 3.4-inch, 4.63-pound unit boasts an ATX12V form factor and is fully modular, so you only use the cables you need to keep space at a premium. The 12 side-mounted ports allow versatile cable connections, including new 16-pin cables. Power all your high-end gaming PC’s components with juice to spare with better energy efficiency. Of course, better efficiency means less heat, so your cooling system only cuts on when necessary.
The Seasonic PRIME TX-1000 is a premium 1000-watt PSU for high-end gaming PCs and other use-heavy applications. The relatively small size packs a punch and delivers exceptional performance. Seasonic also warrants this product for 12 years, more than the average for power supply products of this class. Check out the Seasonic PRIME TX-1000 at Amazon.
|The Seasonic PRIME TX–1000 delivers 96% efficiency with an 80 Plus Titanium certification.||This PSU is relatively expensive.|
|A 135mm fluid dynamic ball-bearing cooling fan operates silently in two user-controlled modes.|
|This 6.7 x 6 x 3.4-inch, 4.63-pound unit boasts an ATX12V form factor and is fully modular for saving space inside your case.|
|12 side-mounted ports allow versatile cable connections, including new 16-pin cables.|
|Seasonic warrants this product for 12 years.|
Best 1000-Watt Power Supply for ATX Builds: EVGA SuperNOVA 1000 G5
The ATX form factor EVGA SuperNOVA 1000 G5 is our Best 1000-Watt Power Supply for ATX builds. Why would you ever need 1000 watts of raw power in a smaller ATX PC? Modern gaming components can demand huge amounts of power, even in a smaller case. Measuring 5.9 x 5.9 x 3.4 inches and weighing seven pounds, this PSU is 80 Plus Gold Certified with a 91+% efficiency under the most common loads.
A modern fluid dynamic bearing cooling fan and EVGA eco-mode combine for ultra-quiet operation while keeping this powerhouse cool during extended use. A fully modular design allows easy space-saving plug-and-play connectivity with 12 ports that support various configurations, including 24-pin cables. This compact ATX form factor PSU combines the best technologies and advanced features in a small size.
This power supply unit is built to last with renowned Japanese capacitors for better heat resistance and power efficiency. EVGA offers a 10-year limited warranty on this product with their own award-winning customer support. Check out the EVGA SuperNOVA 1000 G5 on Amazon.
|The EVGA SuperNOVA 1000 G5 is fully modular with 12 connection ports supporting 24-pin, EPS, PCIe, and other popular cables.||This PSU does not have a standby mode, so it is always operating.|
|This PSU is certified at the 80 Plus Gold level for at least 91% operating efficiency.|
|The fluid dynamic bearing 135mm cooling fan operates completely silent.|
|This product includes many safety features to protect against electrical damage.|
|EVGA offers a limited 10-year warranty with customer support for this PSU.|
Best RGB 1000-Watt Power Supply: GAMEMAX 1050W PSU
- 1050W PSU
- 80 Plus Gold Certified
- RGB with 5V motherboard sync
- 140mm fan
- Fully modular
- 10-year warranty
PC builders wanting to add more flair to their computer will love the GAMEMAX 1050W PSU, our Best RGB 1000-Watt Power Supply of 2023. This impressive high-end PCU features ARGB SYNC smart RGB lighting with 25 modes and a memory function for dazzling light effects. Use this RGB power supply for the ultimate aesthetic and high-performance gaming experience.
This power supply is 80 Plus Gold Certified for 90%+ efficiency and lower power consumption. ATX 3.0 compatibility and 12VHPHR 16-pin PCIe connector provide plenty of juice for the most power-hungry graphics cards and other components. This GAMEMAX PSU offers 1050 watts of stable and safe power with 12V synchronous rectification and a DC-DC structure that sustains your PC even under heavy sustained loads.
All that power generates heat, and the 140mm hydraulic-bearing turbo smart fan dissipates heat rapidly and keeps air flowing. This 6.61 x 5.91 x 3.35-inch, 3.5-pound unit is built with ATX12V form factor to fit easily into smaller cases. 12 ports support various cabling needs and combinations, including newer 24-pin connections. Plus, the unit is fully modular, so you use only the cables you need to save even more space. Check out the GAMEMAX 1050W PSU on Amazon.
|The GAMEMAX 1050W PSU features ARGB SYNC smart RGB lighting with 25 modes and a memory function for dazzling light effects.||This unit may have too much power at 1050 watts.|
|This PSU boasts ATX 3.0 compatibility and a 12VHPHR 16-pin PCIe connector to supply power-hungry graphics cards and other components.|
|A 140mm hydraulic-bearing turbo smart fan dissipates heat rapidly and keeps air flowing.|
|The ATX12V form factor and 6.61 x 5.91 x 3.35-inch, 3.5-pound size fits into smaller cases.|
|There is a full 10-year manufacturer warranty on this product.|
Best 1000W Power Supply with Advanced Cooling Technology: ASUS ROG STRIX 1000W Gold PSU
- ROG heatsinks
- Axial-tech fan design with dual ball fan bearings
- 0dB technology keeps fan quiet
- 80 Plus Gold Certification
- Fully modular
- 10-year warranty
Builders worried about excess heat from a large power supply PC setup need the ASUS ROG STRIX 1000W Gold PSU, our Best 1000W Power Supply with Advanced Cooling Technology. Power the baddest gaming PC possible with the array of cooling features on this power supply unit. It boasts ROG heatsinks covering critical components, an axial-tech dual-bearing 135mm fan design with longer blades for increased air pressure, and 0dB tech that renders many gaming scenarios absolutely silent.
All this advanced cooling tech combines with an 80 Plus Gold efficiency certification so you know your PC is running its best even at full load. The fully modular design and small, four-pound, 6.3 x 5.91 x 3.39-inch size support 24-pin ATX, 8-pin PCIe, SATA, and 8-pin CPU connectors. Japanese capacitors and other premium components add to this PSU’s heat-dissipating and other reliable characteristics.
This impressive 1000-watt power supply with advanced cooling technology has a full 10-year warranty. Check out the ASUS ROG STRIX 1000W Gold PSU on Amazon.
|The ASUS ROG STRIX 1000W Gold PSU has several advanced cooling features to maintain premium operating temperatures.||This PSU is slightly expensive at over $200 at the time of writing.|
|This PSU has an 80 Plus Gold Certification, so you use less power while enjoying stellar performance.|
|A fully modular design and four-pound, 6.3 x 5.91 x 3.39-inch size support 24-pin ATX, 8-pin PCIe, SATA, and 8-pin CPU connectors.|
|Innovative 0dB tech keeps your fan off for light gaming under 40% load for absolute quiet.|
|ASUS warrants this impressive power supply product for 10 years.|
Most Affordable 1000-Watt PSU of 2023: Pystar 1000W Power Supply
Creating high-end gaming PCs can be expensive, but you can still afford loads of power with the Pystar 1000W Power Supply, our Most Affordable 1000-Watt PSU of 2023. Forget giving up on high power levels and impressive features because of price considerations. This affordable PSU has an 80 Plus Gold Efficiency Certification for peak performance and a stable supply rating. At 5.8 pounds and 6.29 x 5.9 x 3.38 inches, this fully modular unit supports a variety of advanced cabling configurations including 24-pin ATX, 8-pin PCIe, 8-pin CPU, floppy, and SATA.
The 12V synchronous rectification and a DC-DC structure support your PC’s power output even during sustained heavy gaming loads. Plus, the built-in 140mm cooling fan removes heat quickly to maintain optimum operating temperatures. Five safety features help prevent electrical problems, and Pystar covers this unit with a full 10-year warranty. Check out the Pystar 1000W Power Supply on Amazon.
|The Pystar 1000W Power Supply is affordably priced at just over $100 at the time of writing.||This unit does not support external RGB lights.|
|This PSU has an 80 Plus Gold Efficiency Certification for peak performance.|
|A fully modular design supports numerous cabling configurations, including 24-pin ATX, 8-pin PCIe, 8-pin CPU, floppy, and SATA.|
|The built-in 140mm cooling fan removes heat quickly to maintain optimum operating temperatures.|
|This product comes with a full 10-year warranty.|
How to Pick the Best 1000-Watt Power Supply of 2023: Step by Step
Choosing a high-wattage power supply for maximum output is a good idea when you use the most sophisticated gaming components. Many power-hungry GPUs and other features require lots of juice, but you also want to be sure your PSU is compatible with the rest of your system. It also needs formidable cooling technologies because high power also means high heat.
Our criteria for selecting the best 1000-watt power supply of 2023 (plus five more options) included the following:
- Power Efficiency
Let’s review each of these criteria in more detail.
Let’s face it: 1000 watts is a lot of power to convert from AC in the wall to the DC power your PC requires. Converting that power is the job of your PSU. These units all receive ratings after extensive testing so consumers know how they do their jobs. An 80 Plus Gold certification or better is always desired; choose a Platinum-rated model if one is available with your needed features.
A better rating means the PSU converts power more efficiently with less waste, which equates to more savings on your electricity bill. It also means it works smarter and generates less heat to damage other system components and reduce its own lifespan. Remember, a higher rating means less power used and less heat to worry about.
A PSU’s design is important for several reasons. First, you want a 1000W power supply that is small enough to fit into your available space. Less space consumed leaves more room for other components, cabling, and airflow. Next, a fully modular design is always preferable to reduce cable tangles and for easy installation. Some power supply units still come semi-modular or direct-wired, although those are usually low-end and lower-wattage models.
Completely modular PSUs allow for easy plug-and-play installations and varying plug configurations. You can accommodate the newest 24-pin and PCIe connections and advanced components.
Connectors are another critical factor in choosing the best 1000W power supplies. Most high-performing 1000-watt PSUs will feature a wide variety of cable connections to support numerous components. Among the must-haves are 16-pin, 24-pin ATX, 8-pin CPU, PCIe5, SATA, and floppy. Look for at least 12 ports, preferably situated on the side of the unit, with various configurations allowed. The newest fully modular designs will have all these and more.
High power conversion generates high heat. Even the best 1000-watt power supply with a high-efficiency rating needs help to stay cool. High load times can cause rapid heat build-up. The best high-end PSUs feature heat sinks to dissipate excess heat quickly and ultra-quiet, high-speed cooling fans to force fresh air across the unit.
Hybrid PSUs offer technology that only uses the fan when temperatures reach a certain point, such as over 40% load. Until then, the fan does not operate, and the unit relies on other heat-shedding technologies to keep it operating safely. Over the specified load, the fan kicks on to provide extra airflow.
Quality is always important. Your gaming PC needs to last, so you want reliable components. Poor quality PSUs will operate loudly, generate more heat than normal, vibrate noticeably, and cannot be expected to last for years. A sure way to find the best 1000-watt power supply for your needs is to go with well-known manufacturers that offer beefy warranties. At least 10 years with customer support options is desired. If a company warrants a product that long, you can trust they expect it to last.
Our overall best 1000-watt PSU and the other five selections all have 10-year or better warranties, and many include customer service for that time, too. Your investment in a power supply and other components is too significant to risk a poor-quality unit that could cause costly damage.
Power supply unit prices are not terrible. Even when you need a 1000-watt unit to power high-end gaming PCs, you can find one with notable features and performance ratings for a few hundred dollars. Even our budget selection is no slouch at just over $100. You may need to skimp on some aspects of your PC build project, but don’t skimp on the PSU if you need high wattage. Buy a more affordable monitor and GPU for now and save up for future upgrades.
What to Know Before Buying the Best 1000-Watt Power Supply of 2023
Some new changes in the PC gaming landscape are making larger 1000-watt power supply units a must. Many of the best graphics cards are more power efficient than ever, but they still have increased power demands. Some reports indicate that new-generation GPUs will provide up to 600W of power. Combine that with the needs of your other components and suddenly 1000 watts may not be too much after all.
Another consideration is the new ATX12V specification. The newest 3.0 variant adds a 12+4 pin PCIe connector. Every PSU over 450W will include it. An older high-wattage PSU lacking this connector will be unable to handle modern upgrades. Be sure the product you choose is compatible with this specification and includes the 12-pin PCIe connector.
One final thing buyers should know about 1000-watt power supplies is the risk of power spikes and increased demands from the GPU at maximum sustained power. Sudden drops or spikes can trigger outages, even for a few nanoseconds, that can slow gameplay or even cause damage. Look for a PSU with electronic safety features to handle spikes, drops, overloads, and other problems.
Using the Best 1000-Watt Power Supply of 2023: What It’s Like
Using our choice for the best 1000-watt power supply of 2023 should be an exceptional experience. It combines high power output, admirable efficiency and safety features, and advanced cooling technology. The high-end PSU also features PCIE-5 technology to support 5th-generation graphics cards and ATX 3.0 for stable and high-efficiency performance. Numerous modern cable connections are supported for upgrading to the most advanced level components. Plus with 1000 watts of power available, you can easily support the most impressive gaming PC imaginable.
All our other options in this article boast similar features. We sought to combine the best must-have features with different major standout offerings for those users with specific needs or tastes. Using any of our recommended 1000-watt power supply products will result in complete satisfaction for many years of gaming or other high-demand applications.
The image featured at the top of this post is ©addkm/Shutterstock.com.