You will find the best ATX v3.x & PCIe 5.x Ready PSU Picks 2025 in this article. PSUs compatible with the most recent ATX v3.x specifications are significantly more expensive than those meeting the requirements of the previous ATX specifications. You may wonder whether you should invest in them or opt for an older-generation power supply unit (PSU) to save money. However, none of today’s graphics cards have high enough power spikes to justify the demanding ATX v3.x requirements for power excursions, as they are called; no one knows what future GPUs will bring. You can read more on the ATX v3.0 specification in this article. We also have an English section on our Discord server, where you can find answers to any questions you may have.
The newer ATX v3.1 and PCIe 5.1 standards are already in effect. Since the significant difference between ATX v3.0 and 3.1 is mainly in the connector, from 12VHPWR to 12V-2×6, with the high-power cables remaining the same, I expect most ATX v3.0 power supplies (PSUs) to receive slight updates for ATX v3.1 compatibility. A downside of the ATX v3.1 spec is that it allows for a lower hold-up time, from 17ms (ATX v3.0) to 12ms.
An article that contains everything you need to know:
Another interesting article if you are wondering whether you should get an ATX v3.0 or a v3.1 PSU:
Should I get an ATX v3.1 PSU, or will an ATX v3.0 be fine? Everything you need to know!
| Update Date | Changes |
| 6 June 2025 |
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| 12 March 2025 |
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| 21 December 2024 |
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| 15 December 2024 |
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| 13 December 2024 |
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| 17 September 2024 | Major Updates to all categories. |
| 3 July 2024 | Major Updates to all categories. |
| 8 May 2024 | Major Update. Added 650W category. |
| 28 March 2024 | Updated all categories. |
| 27 March 2024 | Updated the 1001- 1250W category. |
| 6 March 2024 | Layout changes to make it easier to read the article. |
| 12 February 2024 | A new category was added comparing ALL ATX v3.x PSUs, regardless of their Wattage. |
| 30 January 2024 | Updated 1001- 1250W and above 1250W categories. |
| 30 December 2023 | Updated all categories. |
| 16 November 2023 | Updated some entries and included tables with the three best units in each category. |
| 1 November 2023 | Updated all categories with new entries and threw out some low-performance PSUs. |
| 22 October 2023 | A paragraph was added to the prologue mentioning the ATX v3.1 and PCIe 5.1 CEM standards. |
| 15 September 2023 | Added the following:
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| 28 August 2023 | Added the following:
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| 11 June 2023 | Added Cougar Polar X2 1050/1200 & Pichau Nidus 1200 |
| 10 June 2023 | Added Super Flower Leadex VII Gold 850 & Cougar GEX X2 850 |
| 16 May 2023 | Removed Vetroo 1000G5 after user reports on coil whine. |
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