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Best Buy customers often prefer the following products when searching for best atx power supply.

A power supply is the heart of a PC. It's the component that takes the AC power from your wall socket and converts it into the direct current (DC) needed to run your computer. Over the years, ATX power supplies have gotten better in terms of efficiency, reliability, and noise levels. But there are still differences between models, especially in terms of size. Browse the top-ranked list of best atx power supplies below along with associated reviews and opinions.

Main Results
  1. CORSAIR - SF-L Series SF850L 80 Plus Gold Fully Modular ATX Power Supply - Black - Front_Zoom
    Top comment

    "Power supply...Building a mini PC so needed a smaller power supply. This fit perfect....Great power supply for the price and can handle my 7800XT and 7800X3D with ease."

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    Product Description

    CORSAIR SF-L Series Fully Modular SFX Power Supplies with ATX 3.0 and PCIe 5.0 compliance provide the continuous high wattages demanded by the latest PC hardware, all in a space-saving SFX-L form-factor. Micro-fit PSU connectors and fully modular, flexible cables enable a tidy and compact build, even for exceedingly powerful systems. A 120mm rifle bearing PWM fan deploys Zero RPM mode at lower loads for exceptionally quiet performance. Japanese 105°C-rated electrolytic capacitors deliver long life and reliability, backed by a seven-year warranty. Wake your computer faster and consume less power with Modern Standby sleep mode. For high-wattage, 80 PLUS Gold power in a compact profile, the SF-L Series is your small form X-factor.
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    Top comment

    "Power supply...Building a mini PC so needed a smaller power supply. This fit perfect....Great power supply for the price and can handle my 7800XT and 7800X3D with ease."

    See all customer reviews

    Product Description

    CORSAIR SF-L Series Fully Modular SFX Power Supplies with ATX 3.0 and PCIe 5.0 compliance provide the continuous high wattages demanded by the latest PC hardware, all in a space-saving SFX-L form-factor. Micro-fit PSU connectors and fully modular, flexible cables enable a tidy and compact build, even for exceedingly powerful systems. A 120mm rifle bearing PWM fan deploys Zero RPM mode at lower loads for exceptionally quiet performance. Japanese 105°C-rated electrolytic capacitors deliver long life and reliability, backed by a seven-year warranty. Wake your computer faster and consume less power with Modern Standby sleep mode. For high-wattage, 80 PLUS Gold power in a compact profile, the SF-L Series is your small form X-factor.
    See all Power Supplies
    See all Power Supplies
  2. Thermaltake - Toughpower GF A3 750W 80 PLUS Gold PCIe Gen 5 ATX 3.0 Ready Fully Modular Power Supply - Black - Front_Zoom
    Top comment

    "Power supply"

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    Product Description

    Toughpower GF A3 series is 80 PLUS Gold certified and compatible with Intel’s ATX 3.0 specifications. Designed with a native PCIe Gen 5.0 connector, it can power up next-gen technology with one new 12VHPWR cable.
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    Top comment

    "Power supply"

    See all customer reviews

    Product Description

    Toughpower GF A3 series is 80 PLUS Gold certified and compatible with Intel’s ATX 3.0 specifications. Designed with a native PCIe Gen 5.0 connector, it can power up next-gen technology with one new 12VHPWR cable.
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    See all Power Supplies
  3. Thermaltake - Toughpower GF A3 650W 80 PLUS Gold PCIe Gen 5 ATX 3.0 Ready Fully Modular Power Supply - Black - Front_Zoom

    Product Description

    Toughpower GF A3 series is 80 PLUS Gold certified and compatible with Intel’s ATX 3.0 specifications. Designed with a native PCIe Gen 5.0 connector, it can power up next-gen technology with one new 12VHPWR cable.
    See all Power Supplies

    Product Description

    Toughpower GF A3 series is 80 PLUS Gold certified and compatible with Intel’s ATX 3.0 specifications. Designed with a native PCIe Gen 5.0 connector, it can power up next-gen technology with one new 12VHPWR cable.
    See all Power Supplies
    See all Power Supplies
  4. Thermaltake - Smart BM3 80+ Bronze  PCIE Gen 5 ATX 3.0 650W Semi-Modular Power Supply - Black - Front_Zoom

    Product Description

    Power Up the Next Generation Hardware. Smart BM3 80 PLUS Bronze certified semi modular power supply unit is designed to meet ATX 3.0 standards, it also comes with one PCIe Gen 5.0 (12VHPWR) connector to support modern graphics cards. With an ample 5-year warranty, the Smart BM3 series is able to satisfy the market, where value-oriented users are looking for a new power supply with all the latest features.
    See all Power Supplies

    Product Description

    Power Up the Next Generation Hardware. Smart BM3 80 PLUS Bronze certified semi modular power supply unit is designed to meet ATX 3.0 standards, it also comes with one PCIe Gen 5.0 (12VHPWR) connector to support modern graphics cards. With an ample 5-year warranty, the Smart BM3 series is able to satisfy the market, where value-oriented users are looking for a new power supply with all the latest features.
    See all Power Supplies
    See all Power Supplies
  5. Thermaltake - Toughpower GF A3 1200W 80 PLUS Gold PCIe Gen 5 ATX 3.0 Ready Fully Modular Power Supply - Black - Front_Zoom
    Top comment

    "No problems so far. Has 2 cpu power cables for motherboard, which I needed."

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    Product Description

    Toughpower GF A3 series is 80 PLUS Gold certified and compatible with Intel’s ATX 3.0 specifications. Designed with a native PCIe Gen 5.0 connector, it can power up next-gen technology with one new 12VHPWR cable.
    See all Power Supplies
    Top comment

    "No problems so far. Has 2 cpu power cables for motherboard, which I needed."

    See all customer reviews

    Product Description

    Toughpower GF A3 series is 80 PLUS Gold certified and compatible with Intel’s ATX 3.0 specifications. Designed with a native PCIe Gen 5.0 connector, it can power up next-gen technology with one new 12VHPWR cable.
    See all Power Supplies
    See all Power Supplies
  6. Thermaltake - Toughpower GF A3 850W 80 PLUS Gold PCIe Gen 5 ATX 3.0 Ready Fully Modular Power Supply - Black - Front_Zoom
    Top comment

    "Great power supply 850 watt, upgraded from a 650 watt"

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    Product Description

    Toughpower GF A3 series is 80 PLUS Gold certified and compatible with Intel’s ATX 3.0 specifications. Designed with a native PCIe Gen 5.0 connector, it can power up next-gen technology with one new 12VHPWR cable.
    See all Power Supplies
    Top comment

    "Great power supply 850 watt, upgraded from a 650 watt"

    See all customer reviews

    Product Description

    Toughpower GF A3 series is 80 PLUS Gold certified and compatible with Intel’s ATX 3.0 specifications. Designed with a native PCIe Gen 5.0 connector, it can power up next-gen technology with one new 12VHPWR cable.
    See all Power Supplies
    See all Power Supplies
  7. Thermaltake - Smart BM3 80+ Bronze PCIE Gen 5 ATX 3.0 850W Semi-Modular Power Supply - Black - Front_Zoom
    Top comment

    "Great power!...Great power supply for budget"

    See all customer reviews

    Product Description

    Power Up the Next Generation Hardware. Smart BM3 80 PLUS Bronze certified semi modular power supply unit is designed to meet ATX 3.0 standards, it also comes with one PCIe Gen 5.0 (12VHPWR) connector to support modern graphics cards. With an ample 5-year warranty, the Smart BM3 series is able to satisfy the market, where value-oriented users are looking for a new power supply with all the latest features.
    See all Power Supplies
    Top comment

    "Great power!...Great power supply for budget"

    See all customer reviews

    Product Description

    Power Up the Next Generation Hardware. Smart BM3 80 PLUS Bronze certified semi modular power supply unit is designed to meet ATX 3.0 standards, it also comes with one PCIe Gen 5.0 (12VHPWR) connector to support modern graphics cards. With an ample 5-year warranty, the Smart BM3 series is able to satisfy the market, where value-oriented users are looking for a new power supply with all the latest features.
    See all Power Supplies
    See all Power Supplies
  8. Thermaltake - Smart BM3 80+ Bronze PCIE Gen 5 ATX 3.0 750W Semi-Modular Power Supply - Black - Front_Zoom
    Top comment

    "Power supply...had the perfect amount of cables for my pc build and am very happy with it. thankfully best buy has a lot of different options to choose from, because i needed a PSU with a certain number of cables. i would highly recommended."

    See all customer reviews

    Product Description

    Power Up the Next Generation Hardware. Smart BM3 80 PLUS Bronze certified semi modular power supply unit is designed to meet ATX 3.0 standards, it also comes with one PCIe Gen 5.0 (12VHPWR) connector to support modern graphics cards. With an ample 5-year warranty, the Smart BM3 series is able to satisfy the market, where value-oriented users are looking for a new power supply with all the latest features.
    See all Power Supplies
    Top comment

    "Power supply...had the perfect amount of cables for my pc build and am very happy with it. thankfully best buy has a lot of different options to choose from, because i needed a PSU with a certain number of cables. i would highly recommended."

    See all customer reviews

    Product Description

    Power Up the Next Generation Hardware. Smart BM3 80 PLUS Bronze certified semi modular power supply unit is designed to meet ATX 3.0 standards, it also comes with one PCIe Gen 5.0 (12VHPWR) connector to support modern graphics cards. With an ample 5-year warranty, the Smart BM3 series is able to satisfy the market, where value-oriented users are looking for a new power supply with all the latest features.
    See all Power Supplies
    See all Power Supplies
  9. NZXT - C1200 80 Plus Gold Fully-Modular Low Noise ATX 3.0 PSU - Black - Front_Zoom
    Top comment

    "Best power supply for a 4090 build with lots of head room....The best of the best power supply number one in the market"

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    Product Description

    Using the ATX v3.0 power standard, the NZXT C1200 Gold pumps up to 600 watts of power to NVIDIA 40-series graphics cards over a single cable while maintaining highly efficient, low-noise performance.
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    Top comment

    "Best power supply for a 4090 build with lots of head room....The best of the best power supply number one in the market"

    See all customer reviews

    Product Description

    Using the ATX v3.0 power standard, the NZXT C1200 Gold pumps up to 600 watts of power to NVIDIA 40-series graphics cards over a single cable while maintaining highly efficient, low-noise performance.
    See all Power Supplies
    See all Power Supplies
  10. CORSAIR - HXi Series HX1200i 80 PLUS Platinum Cybenetics Platinum Fully Modular ATX Power Supply - Black - Front_Zoom

    Product Description

    CORSAIR HXi Series Fully Modular Ultra-Low Noise Power Supplies deliver exceptional 80 PLUS Platinum efficient power and low-noise fluid dynamic bearing fan performance. ATX 3.0 and PCIe 5.0 compliance, HXi PSUs have every connection needed to power today’s most demanding PC upgrades. Powerful CORSAIR iCUE software enables custom fan curves, monitoring and adjusting power settings, and more thanks to a fully digital platform. Japanese 105°C-rated electrolytic capacitors deliver long life and reliability, backed by a ten-year warranty. Wake your computer faster and consume less power with Modern Standby sleep mode. Zero RPM mode ensures near-silent operation at low and medium loads. The HXi Series puts platinum power at your command.
    See all Power Supplies

    Product Description

    CORSAIR HXi Series Fully Modular Ultra-Low Noise Power Supplies deliver exceptional 80 PLUS Platinum efficient power and low-noise fluid dynamic bearing fan performance. ATX 3.0 and PCIe 5.0 compliance, HXi PSUs have every connection needed to power today’s most demanding PC upgrades. Powerful CORSAIR iCUE software enables custom fan curves, monitoring and adjusting power settings, and more thanks to a fully digital platform. Japanese 105°C-rated electrolytic capacitors deliver long life and reliability, backed by a ten-year warranty. Wake your computer faster and consume less power with Modern Standby sleep mode. Zero RPM mode ensures near-silent operation at low and medium loads. The HXi Series puts platinum power at your command.
    See all Power Supplies
    See all Power Supplies
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