Best ATX 3.0 PSU

The 6 Best ATX 3.0 Powerhouses: Top-rated PSUs Unleashed

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The ATX 3.0 PSU has emerged as the gold standard for power supplies, offering exceptional power delivery, efficiency, and reliability for demanding users and enthusiasts alike. In this blog post, we will dive into the world of ATX 3.0 PSUs and explore the best options available in the market. From renowned brands known for their quality and performance to units that offer a balance between power and aesthetics, we will guide you through the top ATX 3.0 PSUs. By the end, you’ll have a comprehensive understanding of the features and benefits of these PSUs, enabling you to make an informed decision and choose the best ATX 3.0 PSU for your specific needs.

What Is an ATX 3.0 PSU?

An ATX 3.0 PSU, or Advanced Technology Extended 3.0 Power Supply Unit, is a power supply that adheres to the ATX 3.0 specification. It is designed to provide power to the various components of a computer, including the motherboard, CPU, graphics card, storage devices, and peripherals. ATX 3.0 PSUs offer increased power output, improved efficiency, multiple +12V rails for better power distribution, and often feature a modular design for easier cable management. These PSUs are ideal for high-performance systems, ensuring stable and efficient power delivery to meet the demands of demanding components.

Top ATX 3.0 PSUs for Your PC

1. Corsair RM850x Best ATX 3.0 PSUs

  • Wattage: 850W
  • Efficiency: 80 PLUS Gold Certified
  • Modular: Fully modular
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The Corsair RM850x is an excellent choice for those looking to adopt next-gen ATX 3.0 components. As one of the first PSUs to support the new high-power STandard, it futureproofs a system for components taking advantage of the massive increases in power delivery. The RM850x provides up to 850W of stable, efficient power to easily handle top-end graphics cards and overclocked CPUs.

It utilizes top-tier Japanese capacitors and a fresh DC-DC design for tight voltage regulation under intense transient loads. Additionally, its fully modular cables allow tidy builds without excess clutter. Gamers and creators investing in the new best ATX 3.0 PSUs gear will get years of reliable operation from this premium unit. With competitive pricing, the RM850x is an outstanding foundational component for future-facing high-end systems.


  1. Fully modular cables for easy cable management.
  2. Japanese capacitors for reliability and performance.
  3. 80 Plus Gold efficiency saves electricity costs.
  4. High-quality build and components ensure longevity.
  5. Fully supports the latest ATX 3.0 specifications.


  1. Slightly more expensive than some options.
  2. The fan grille could include a dust filter.

2. EVGA Super Nova 750 Best ATX 3.0 PSUs

  • Wattage: 750W
  • Efficiency: 80 PLUS Gold Certified
  • Modular: Fully modular
Best ATX 3.0 PSU
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The EVGA Super Nova 750 is also best ATX 3.0 PSUs available. It offers a perfect balance of performance, efficiency, and reliability, making it a popular choice among PC enthusiasts and gamers. As an early adopter of the new standard, it ensures compatibility with the latest high-power components. Its 80 Plus Gold efficiency saves electricity costs while the fully modular cabling allows tidy cable management. Under the hood, premium Japanese capacitors and an upgraded DC-DC design deliver extremely stable voltages and super-tight regulation.

Additionally, the independent DC rails minimize interference between components. EVGA also backs it with a 10-year warranty, providing years of reliable operation. While more wattage may be needed for multi-GPU rigs, the 750-watt capacity is perfectly sufficient for high-end single-GPU builds. Overall the Super Nova 750 G7 is a top-tier choice for future-ready ATX 3.0 platforms.


  1. Modular cables for tidy cable routing.
  2. 80 Plus Gold efficiency low power bills.
  3. High stable power delivery for components.
  4. Independent rails minimize interference.
  5. Long 10-year warranty for future upgradability.


  1. Smaller 750W capacity limits growth headroom.
  2. Slightly louder fan than some competitors.

3. Seasonic Focus GX-850 Best ATX 3.0 PSUs

  • Wattage: 850W
  • Efficiency: 80 PLUS Gold Certified
  • Modular: Fully modular
Best ATX 3.0 PSU
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The Seasonic Focus GX-850 is a fully modular PSU that fully supports the new ATX 3.0 standard. With 850W of continuous power, it has more than enough juice to handle today’s most powerful graphics cards and overclocked processors. Using a single rail design, it can deliver clean and stable power to demanding components. Equipped with flat and silent fans, Japanese capacitors, and advanced protection features, this unit delivers top-tier performance and reliability.

Its 80 Plus Gold certification also makes it very energy efficient. With full compatibility for the latest power delivery specs like PCIe Gen 5 and CPU transients, the GX-850 ensures new high-powered builds are fully future-proofed. Seasonic’s renowned quality and 12-year warranty further sweeten what is arguably the best 850W ATX 3.0 PSUs on the market.


  1. High-quality Japanese capacitors for reliability.
  2. The flat efficient fan keeps it cool and quiet.
  3. Modular cables for excellent cable management.
  4. 80 Plus Gold efficiency saves energy costs.
  5. 12-year warranty for years of usage.


  1. Thicker sizes may not fit smaller cases.
  2. PCIe cables are not fully blacked out.

4. be quiet! Dark Power PRO 13

  • Wattage: 1600W
  • Efficiency: 80 PLUS Titanium
  • Modular: Fully Modular
Best ATX 3.0 PSU
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Be quiet! Dark Power PRO 13 is an incredibly capable and highly efficient PSU that seamlessly supports the latest best ATX 3.0 PSUs standard. With up to 1,300 watts of continuous output available, it has more than enough power reserves for even the hungriest dual-GPU setups. Exceptionally tight voltage regulation and ultra-low ripple and noise ensure stable, clean power for even overclocked high-end components.

Its silence-optimized 135mm fan and 0dB mode combine with FDB fan technology for virtually inaudible operation even under the heaviest loads. Protections like OCP, OPP, and OTP, as well as the 10-year warranty, provide peace of mind. The dark Power PRO 13 delivers world-class performance and reliability for today’s and tomorrow’s most advanced computer builds utilizing ATX 3.0’s massive bandwidth.


  1. Whisper quiet 135mm fan for silence.
  2. High-wattage support for multi-GPU setups.
  3. Extremely efficient 80 Plus Platinum rating.
  4. Excellent build quality and components.
  5. 10-year warranty for long-term reliability.


  1. Substantial size challenges small builds.
  2. No dust filter on the fan grill.

5. CORSAIR – HXi Series Best ATX 3.0 PSUs

  • Wattage: 1500W
  • Efficiency: 80 PLUS Platinum
  • Modular: Fully modular
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The CORSAIR HXi Series is widely regarded as one of the best ATX 3.0 PSUs available in the market. The CORSAIR HXi Series provides some of the finest fully-modular PSUs supporting the new ATX 3.0 standard. Available in wattages from 750W up to 1250W, they have more than enough juice to reliably power even dual-GPU machines. Utilizing 100% Japanese capacitors and low-noise ventilation, they deliver elite efficiency, performance, and acoustics under any loading conditions.

Their multi-rail designs with independent cables ensure flawless power delivery and stability. Along with full compliance for the upcoming massive transients of the latest components, users also get industry-leading warranties of up to 10 years. Whether running a cutting-edge gaming rig or overclocking a workstation, the HXi Series outshines the competition with build quality that will satisfy even the discerning power user for years to come.


  1. Fully modular for great cable management.
  2. High efficiency saves on electricity costs.
  3. Available in 750W-1250W for flexibility.
  4. 10-year warranty for reliable operation.
  5. Cables bundled for tidy builds.


  1. HXi units have higher price tags.
  2. The fan grille lacks a dust filter.

6. NZXT C850 Best ATX 3.0 PSUs

  • Wattage: 850W
  • Efficiency: 80 PLUS Gold Certified
  • Modular: Fully modular
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The NZXT C850 offers excellent performance, efficiency, and a sleek design, making it a popular choice for both gamers and PC enthusiasts. With 850 watts of continuous power, it has more than enough juice for today’s most demanding components. It utilizes premium Japanese capacitors and a fresh design to deliver stable voltage regulation under heavy transient loads. Modular cabling, flat black sleeves, and comprehensive protection provide both style and peace of mind.

Importantly, the C850 is fully ATX 3.0 compliant out of the box, ensuring compatibility with future high-power PCIe Gen 5 and CPU technologies. NZXT also backs it with a generous 10-year warranty. For a reasonable price, builders get a fully modular PSU that not only powers current high-performance rigs flawlessly but also retains relevance for years to come as new ATX 3.0 products arrive.


  1. Fully modular for easy cable routing.
  2. Reasonably priced for feature set.
  3. Sleek aesthetic blends into builds.
  4. Compact size saves space in tight cases.
  5. Reliable 10 year warranty.


  1. The fan can spin up audibly under load.
  2. Flat cables may snag during routing.

Why Does Your Choice of PSU Matter?

When selecting the best ATX 3.0 PSU for your needs, there are several crucial factors to consider. These factors will ensure that you choose a PSU that delivers adequate power, optimal efficiency, and reliable performance. Here are the key considerations:

1. Power Output:

Determine the power requirements of your PC components, including the CPU, GPU, and other peripherals. Ensure that the PSU you choose provides sufficient wattage to meet these requirements, with some headroom for future upgrades.

2. Efficiency Rating:

Look for PSUs with higher efficiency ratings, such as 80 Plus Gold, Platinum, or Titanium. Higher efficiency means less wasted energy, reduced heat generation, and lower energy bills. Choose a PSU that matches your usage and budget.

3. Modular or Non-Modular:

Consider whether you prefer a modular or non-modular PSU. Modular PSUs allow you to detach and connect only the necessary cables, enhancing cable management and airflow within the PC case. Non-modular PSUs come with fixed cables, which can lead to clutter and hinder airflow.

4. Quality and Reliability:

Opt for PSUs from reputable brands known for their quality and reliability. Look for units that use high-quality components, such as Japanese capacitors, which ensure better longevity and stability.

5. Voltage Regulation and Ripple Suppression:

Check for PSUs with excellent voltage regulation and low ripple noise. Tight voltage regulation ensures stable power delivery to your components, while low ripple noise minimizes potential interference and ensures clean power.

6. Cooling and Noise:

Consider the PSU’s cooling system and noise level. Look for PSUs with efficient cooling mechanisms, such as a large fan or hybrid fan control, to keep temperatures in check. Also, consider PSUs with features like zero RPM fan mode that allows for silent operation during low loads.

7. Warranty and Support:

Check the warranty period offered by the manufacturer. A longer warranty indicates the manufacturer’s confidence in the PSU’s quality. Additionally, ensure that the manufacturer provides reliable customer support in case you encounter any issues.

8. Budget:

Set a budget for your PSU purchase. While it’s tempting to go for the highest-end options, consider balancing your needs and budget to find the best PSU that meets your requirements without overspending.

By considering these factors, you can make an informed decision and choose the best ATX 3.0 PSU that will provide reliable and efficient power delivery to your high-performance PC. Now, let’s dive into the best ATX 3.0 PSUs available in the market.


In conclusion, the world of ATX 3.0 PSUs offers a range of high-quality options for powering your desktop PC. These power supplies have significantly evolved to meet the demands of today’s high-performance systems, providing exceptional power delivery, efficiency, and reliability. When choosing the best ATX 3.0 PSU for your system, consider factors such as power requirements, efficiency ratings, modular design, cooling performance, and warranty. With these options, you can find the perfect PSU to ensure stable and efficient power delivery, enabling your PC to perform at its best.

Last Updated on 13 February 2024 by Haleema


Ansa Imran, a writer, excels in creating insightful content about technology and gaming. Her articles, known for their clarity and depth, help demystify complex tech topics for a broad audience. Ansa’s work showcases her passion for the latest tech trends and her ability to engage readers with informative, well-researched pieces.

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