PSU ATX 3.0 Standard [Explained]

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Arsalan Shakil

As a Hardware Expert at Tech4Gamers, I bring my decade-long expertise in electronics design, embedded solutions, and prototyping. My knack for exposing misconceptions in the tech world finds a perfect outlet here.

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The recent release of more power-hungry PC components, such as GPUs and CPUs, increases the demand for an efficient power supply. So, to cater to this demand, the PSU ATX 3.0 standard was released. Let’s discuss what this standard is and how much this should mean to you for your future builds.

Key Takeaways

• The ATX 3.0 PSU standard is a newer power supply standard designed to accommodate the high power demands of power-hungry PC components.
• Choosing a PSU with ATX 3.0 is wise if you have higher-end PC components. Otherwise, if your old PSU is handling your modest build, it’s better not to break the bank.
• ATX12VO has a single 12V rail, which could lead to higher efficiency but is incompatible with all motherboards.

What Is The ATX 3.0 Standard?

The ATX 3.0 standard is a newer standard for PSUs that caters to the higher power demand of newer-generation PC components.^[1]

With their release in 2022, the PSUs with this standard can deal with the rapid spike in power demand often seen in the latest power-hungry GPUs and CPUs. These PSUs come with simplified 16-pin PCIe Gen 5 power connectors^[2], which increase efficiency.

Do You Need An ATX 3.0 PSU?

Indeed, the PSUs with the ATX 3.0 standard are the most suitable for higher efficiency and performance, but whether you need it or not depends on the following:

• High-end GPU: If you have a newer-gen GPU like the RTX series 40, you should know that a PSU with this standard can handle spikes of up to 1800W for 100 microseconds.^[3] While this time might seem tiny, it can save your GPU at a hefty price. So, for safety, you should buy ATX 3.0 PSU.
• Longevity: While companies like NVIDIA manufacture their components while taking all the necessary precautions, a little investment can save you money. You can still use a suitable PSU for your system by calculating the power and adding some headroom; however, opting for ATX 3.0 will be a great choice.

Difference Between ATX 3.0 And ATX12VO

Helpful Resources by Tech4Gamers:

• PSU Rails
• 80+ Certification
• PSU Efficiency

References:

Arsalan Shakil

[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.