10 Best Atx 3.1 Psu of 2025

Tested and Reviewed: Top 10 Atx 3.1 Psu deals with expert ratings from 8.1 to a perfect 10

June 2026 Edition

Editor's Choice

9.7

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ASUS

ASUS ROG Strix 1000W Platinum (Fully Modular Power Supply, 80 Plus Platinum Certified, ATX 3.1, Cybenetics Lambda A+, GaN MOSFET, GPU-First Intelligent Voltage Stabilizer, 10-Year Warranty)

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Editor's bottom line:

“This atx 3.1 psu is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

GaN MOSFET delivers superior power efficiency by up to 30% and a more organized internal layout for cooler operation
"GPU-First" voltage sensing with patented-intelligent voltage stabilizer enhances voltage delivery by up to 45% to your graphics card for smoother gameplay and unwavering performance
Large ROG heatsinks cover critical components, delivering lower temperatures and noise than reference designs
Dual ball fan bearings can last up to twice as long as sleeve bearing designs
0dB technology lets you enjoy light gaming in relative silence
ATX 3.1 compatible: ROG Strix Platinum is compliant with ATX 3.1 standard, ensuring enhanced voltage and current regulation
PCIe 5.0 Ready: ROG Strix Platinum features a native 12V-2x6 connector for next-gen graphics card power
80 PLUS platinum certified: ROG Strix Platinum utilizes low-ESR capacitors and premium components for industry-leading power efficiency
10-year warranty included

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Picked by 397 people today

9.5

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Corsair

CORSAIR HX1500i (2025) Fully Modular Ultra-Low Noise ATX Power Supply with 12V-2x6 Cable – ATX 3.1 & PCIe 5.1 Compliant, Cybenetics Platinum Efficiency, Fluid Dynamic Bearing Fan – Black

10% OffFree Shipping

Main Highlights

Fully Modular Cabling: Connect only the cables your system needs, making clean and tidy builds easy
Intel ATX 3.1 Certified: Compliant with the ATX 3.1 power standard, supporting the PCIe Gen 5 platform and resisting transient power spikes
140mm Fluid Dynamic Bearing (FDB) Fan: Delivers extremely quiet and long-lasting fan performance
Powerful CORSAIR iCUE Software: Create custom fan curves, monitor power settings, and toggle between single to multi-rail overcurrent protection (OCP) on-the-fly
Zero RPM Fan Mode: At low and medium loads the cooling fan switches off entirely for near-silent operation

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9.5

msi

MSI MAG A1000GL PCIE5 White, Fully Modular Compact Gaming 1000W Power Supply, 80+ Gold, ATX 3.1 & PCIe 5.1 Ready, Native Dual-Color 12V-2x6 Cable, Low-Noise, Embossed Jacket Cables, 10 Year Warranty

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Main Highlights

Supports NVIDIA GeForce RTX 40 series graphics cards
ATX 3.1 ready, native dual-color PCIe CEM 5.1 connector
Fully modular design, flat cables
80 PLUS Gold certified for high efficiency
Active PFC design

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9.2

Save 20%

msi

MSI MAG A750GL PCIE5, Fully Modular Compact Gaming 750W Power Supply, 80+ Gold, ATX 3.1 & PCIe 5.1 Ready, Native Dual-Color 12V-2x6 Cable, 10 Year Warranty

20% OffFree Shipping

Main Highlights

80 PLUS GOLD CERTIFIED
10-year limited warranty, guaranteeing long term reliable operation
Fully modular design
ATX 3.1 & PCIE 5.1

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9.0

Save 12%

msi

MSI MAG A850GL PCIE5, Fully Modular Compact Gaming 850W Power Supply, 80+ Gold, ATX 3.1 & PCIe 5.1 Ready, Native Dual-Color 12V-2x6 Cable, 10 Year Warranty

12% OffFree Shipping

Main Highlights

80 PLUS GOLD CERTIFIED
10-year limited warranty, guaranteeing long term reliable operation
Fully modular design
ATX 3.1 & PCIE 5.1

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8.8

Save 26%

Corsair

CORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready Fully Modular 1000W Power Supply – Low-Noise, Cybenetics Gold Efficiency, Native 12V-2x6 Connector – Black

26% OffFree Shipping

Main Highlights

Fully Modular: Reliable and efficient low-noise power supply with fully modular cabling, so you only have to connect the cables your system needs.
Cybenetics Gold-Certified: Rated for up to 91% efficiency, resulting in lower power consumption, less noise, and cooler temperatures.
ATX 3.1 Compliant: Compliant with the ATX 3.1 power standard from Intel, supporting PCIe 5.1 and resisting transient power spikes.
Native 12V-2x6 Connector: Ensures compatibility with the latest graphics cards with a direct GPU to PSU connection no adapter necessary.
Embossed Cables with Low-Profile Combs: Sleek, ultra-flexible embossed cables look great and make installing and connecting the RMx a breeze.

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8.6

ASUS

ASUS ROG Strix 1200W Platinum (Fully Modular Power Supply, 80 Plus Platinum Certified, ATX 3.1, GaN MOSFET, GPU-First Intelligent Voltage Stabilizer, 10-Year Warranty)

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Main Highlights

GaN MOSFET delivers superior power efficiency by up to 30% and a more organized internal layout for cooler operation
"GPU-First" voltage sensing with patented-intelligent voltage stabilizer enhances voltage delivery by up to 45% to your graphics card for smoother gameplay and unwavering performance
Large ROG heatsinks cover critical components, delivering lower temperatures and noise than reference designs
Dual ball fan bearings can last up to twice as long as sleeve bearing designs
0dB technology lets you enjoy light gaming in relative silence
ATX 3.1 compatible: ROG Strix Platinum is compliant with ATX 3.1 standard, ensuring enhanced voltage and current regulation
PCIe 5.0 Ready: ROG Strix Platinum features a native 12V-2x6 connector for next-gen graphics card power
80 PLUS platinum certified: ROG Strix Platinum utilizes low-ESR capacitors and premium components for industry-leading power efficiency
10-year warranty included

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8.3

Save 24%

Corsair

CORSAIR RM850x Fully Modular Low-Noise ATX Power Supply – ATX 3.1 Compliant – PCIe 5.1 Support – Cybenetics Gold Efficiency – Native 12V-2x6 Connector – Black

24% OffFree Shipping

Main Highlights

Fully Modular: Reliable and efficient low-noise power supply with fully modular cabling, so you only have to connect the cables your system needs.
Cybenetics Gold-Certified: Rated for up to 91% efficiency, resulting in lower power consumption, less noise, and cooler temperatures.
ATX 3.1 Compliant: Compliant with the ATX 3.1 power standard from Intel, supporting PCIe 5.1 and resisting transient power spikes.
Native 12V-2x6 Connector: Ensures compatibility with the latest graphics cards with a direct GPU to PSU connection no adapter necessary.
Embossed Cables with Low-Profile Combs: Sleek, ultra-flexible embossed cables look great and make installing and connecting the RMx a breeze.

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Best Value

8.1

Save 37%

ASRock

ASRock PG 1600G ATX 3.1 1600W Power Supply PCle5.1 10 Years Warranty Fully Modular Japanese Capacitor Phantom Gaming PG-1600G 80 Plus Gold Cybenetics Platinum 12V-2x6 Cables

37% OffFree Shipping

Main Highlights

***Not compatible with all built-in computers or systems
Dimensions: 7.09 in × 5.91 in × 3.39 in
80 PLUS GOLD Certified Cybenetics PLATINUM and LAMBDA A Certified
ATX3.1 & PCIe5.1 Ready
Fully Modular Cable Design
Native 12V-2x6 Connector Dual Color Design with TempGuard 135mm Striped Axial FDB Fan
100% Highly Reliable Japanese Capacitors
iCool Intelligent Fan Control Mode 5V BOOST Mode
Global 10 Years Warranty
If any questions about the product, contact us on amazon.

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8.1

be quiet!

be quiet! Pure Power 13 M 1000W Power Supply, 80 Plus® Gold Certification, ATX 3.1 PSU, Support for PCIe 5.1 GPUs, semi-Passive 120mm be quiet! Fan, LLC Technology, Single Rail, for Overclocked GPUs

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Main Highlights

80 PLUS GOLD CERTIFIED Very high operating efficiency Pure Power 13 M 1000W is certified 80 PLUS Gold with an outstanding efficiency rating of up to 94.4%. The most compelling benefit: lower power consumption, consequently lower costs, and above all a cooler as well as quieter operation. Pure Power 13 M 1000W is always the correct choice for quiet systems and gaming PCs!
FUTURE-PROOF YOUR SYSTEM Fulfills all ATX 3.1 specifications Pure Power 13 M 1000W is an ATX 3.1 PSU and comes with both native integration of the 12V-2x6 connector for next-generation PCIe 5.1 graphics cards, and 4 PCIe 6+2-pin connectors for support of current-gen GPUs. This makes the PSU extremely versatile and the perfect choice for powerful systems of today and the ones to come
THE NEW STANDARD OF POWER For massive transient loads Pure Power 13 M offers 1000W of continuous power with one massive 12V rail. Even if the graphics card demands excessive power for a short time: Pure Power 13 M 1000W handles power excursions up to double its rated power with ease. This ensures reliable operation with the next generation of processors and graphics cards
SEMI-PASSIVE ZERO-RPM COOLING Enjoy the silence While under low load, the fan turns off completely until its services are needed again for more demanding operations. This feature, combined with the reliable be quiet! fan and its airflow-optimized fan blades, make Pure Power 13 M 1000W exceptionally silent in all load scenarios
HIGH-CLASS TECHNOLOGIES Rock-solid stability With its LLC topology Pure Power 13 M 1000W provides best-in-class voltage regulation and efficiency. That makes it perfect for building very quiet systems or upgrading gaming and media creation PCs
MODULAR CABLES Utmost convenience and compatibility Thanks to their modularity, all unnecessary cables in the system are left out. Pure Power 13 M 1000W simplifies cable management and routing for a tidy-looking system. A smoother airflow results from the uncluttered layout of the system, which means lower noise and temperatures inside the case.

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Our Best Overall Choice

Best Choice

9.7

ASUS

ASUS ROG Strix 1000W Platinum (Fully Modular Power Supply, 80 Plus Platinum Certified, ATX 3.1, Cybenetics Lambda A+, GaN MOSFET, GPU-First Intelligent Voltage Stabilizer, 10-Year Warranty)

10% OffFree Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

GaN MOSFET delivers superior power efficiency by up to 30% and a more organized internal layout for cooler operation
"GPU-First" voltage sensing with patented-intelligent voltage stabilizer enhances voltage delivery by up to 45% to your graphics card for smoother gameplay and unwavering performance
Large ROG heatsinks cover critical components, delivering lower temperatures and noise than reference designs
Dual ball fan bearings can last up to twice as long as sleeve bearing designs
0dB technology lets you enjoy light gaming in relative silence
ATX 3.1 compatible: ROG Strix Platinum is compliant with ATX 3.1 standard, ensuring enhanced voltage and current regulation
PCIe 5.0 Ready: ROG Strix Platinum features a native 12V-2x6 connector for next-gen graphics card power
80 PLUS platinum certified: ROG Strix Platinum utilizes low-ESR capacitors and premium components for industry-leading power efficiency
10-year warranty included

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