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

A power supply is the electronic device that provides electrical power to a computer's components via the motherboard. The power supply is usually located in the computer's case, but some high-end motherboards have an external power supply. The power supply is the part of a computer most likely to fail, and it is also one of the most difficult parts to troubleshoot and repair. The ATX form factor is a specification for desktop computer power supplies. Here are some of the best ATX power supplies.

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  1. CORSAIR - RMx Shift Series RM850x 80 Plus Gold Fully Modular ATX Power Supply with Modular Side Interface - Black - Front_Zoom
    Top comment

    "Allows my RX 6800 XT to draw as much power as it needs without any failure....This power supply is great for all needs when building a pc...Great power supply...Power supply"

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    Product Description

    CORSAIR RMx SHIFT Series fully modular power supplies boast a revolutionary side cable interface to keep all your connections within quick reach, for exceptionally convenient 80 PLUS Gold efficient power. With fully modular micro-fit connections and ATX 3.0 compliance, RMx SHIFT makes clean PC builds and upgrades even easier. RMx SHIFT PSUs use Japanese 105°C-rated electrolytic capacitors, for long life and reliability backed by a ten-year warranty. A 140mm fluid dynamic bearing fan utilizes a specially calculated fan curve for high performance and reliability with low noise, while Zero RPM mode support ensures virtually silent operation at low and medium loads. For quiet, efficient, and accessible power, put an RMx SHIFT Series PSU on your side.
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    Top comment

    "Allows my RX 6800 XT to draw as much power as it needs without any failure....This power supply is great for all needs when building a pc...Great power supply...Power supply"

    See all customer reviews

    Product Description

    CORSAIR RMx SHIFT Series fully modular power supplies boast a revolutionary side cable interface to keep all your connections within quick reach, for exceptionally convenient 80 PLUS Gold efficient power. With fully modular micro-fit connections and ATX 3.0 compliance, RMx SHIFT makes clean PC builds and upgrades even easier. RMx SHIFT PSUs use Japanese 105°C-rated electrolytic capacitors, for long life and reliability backed by a ten-year warranty. A 140mm fluid dynamic bearing fan utilizes a specially calculated fan curve for high performance and reliability with low noise, while Zero RPM mode support ensures virtually silent operation at low and medium loads. For quiet, efficient, and accessible power, put an RMx SHIFT Series PSU on your side.
    See all Power Supplies
    See all Power Supplies
  2. CORSAIR - HXi Series HX1000i 80 PLUS Platinum Fully Modular Ultra-Low Noise ATX Power Supply - Black - Front_Zoom
    Top comment

    "Reliable, Efficient Power Supply...Purchased this power supply as a replacement. Provides stable power especially when overclocking. ...I loved this power supply but ended up returning it because it wasn't ATX 3.0 compliant. "

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    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. With three EPS12V connectors, 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.
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    Top comment

    "Reliable, Efficient Power Supply...Purchased this power supply as a replacement. Provides stable power especially when overclocking. ...I loved this power supply but ended up returning it because it wasn't ATX 3.0 compliant. "

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    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. With three EPS12V connectors, 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.
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    See all Power Supplies
  3. CORSAIR - CX-M Series CX650M Semi-Modular Low-Noise ATX Power Supply - Black - Front_Zoom
    Top comment

    "great value power supply...great value power supply, fan is pretty good no coil whine, comes with plenty of sata power cables, my one complaint is that only the CPU and 24 pin ATX cables are sleeved, all the modular cables are not sleeved, other then that awesome power supply for 50$...Replacement power suppy...Reasonable price and very versatile power supply for my ATX motherboard"

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    Product Description

    CORSAIR CX-M Series Low-Noise Power Supplies offer 80 PLUS Bronze efficiency and semi-modular cabling for reliable, low-noise operation. With Dual EPS12V cables and two/four PCIe 8-pin power connectors, CX-M PSUs have all the connections needed to power today’s most demanding PC upgrades. Japanese 105°C-rated capacitors deliver superb electrical performance and reliability for your system, backed by a five-year warranty. Robust DC-DC conversion ensures clean, consistent power for all your components and peripherals. With a compact 140mm size allowing for great flexibility in build configurations, CX-M Series power supplies deliver reliable power for nearly any build.
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    Top comment

    "great value power supply...great value power supply, fan is pretty good no coil whine, comes with plenty of sata power cables, my one complaint is that only the CPU and 24 pin ATX cables are sleeved, all the modular cables are not sleeved, other then that awesome power supply for 50$...Replacement power suppy...Reasonable price and very versatile power supply for my ATX motherboard"

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    Product Description

    CORSAIR CX-M Series Low-Noise Power Supplies offer 80 PLUS Bronze efficiency and semi-modular cabling for reliable, low-noise operation. With Dual EPS12V cables and two/four PCIe 8-pin power connectors, CX-M PSUs have all the connections needed to power today’s most demanding PC upgrades. Japanese 105°C-rated capacitors deliver superb electrical performance and reliability for your system, backed by a five-year warranty. Robust DC-DC conversion ensures clean, consistent power for all your components and peripherals. With a compact 140mm size allowing for great flexibility in build configurations, CX-M Series power supplies deliver reliable power for nearly any build.
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    See all Power Supplies
  4. CORSAIR - CX-M Series CX750M Semi-Modular Low-Noise ATX Power Supply - Black - Front_Zoom
    Top comment

    "good product on the CORSAIR - CX-M Series CX750M Semi-Modular Low-Noise ATX Power Supply - Black...Corsiar CX-M CX 750 ATX Power Supply...Great Power Supply- Easy to install and very low fan noise"

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    Product Description

    CORSAIR CX-M Series Low-Noise Power Supplies offer 80 PLUS Bronze efficiency and semi-modular cabling for reliable, low-noise operation. With Dual EPS12V cables and two/four PCIe 8-pin power connectors, CX-M PSUs have all the connections needed to power today’s most demanding PC upgrades. Japanese 105°C-rated capacitors deliver superb electrical performance and reliability for your system, backed by a five-year warranty. Robust DC-DC conversion ensures clean, consistent power for all your components and peripherals. With a compact 140mm size allowing for great flexibility in build configurations, CX-M Series power supplies deliver reliable power for nearly any build.
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    Top comment

    "good product on the CORSAIR - CX-M Series CX750M Semi-Modular Low-Noise ATX Power Supply - Black...Corsiar CX-M CX 750 ATX Power Supply...Great Power Supply- Easy to install and very low fan noise"

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    Product Description

    CORSAIR CX-M Series Low-Noise Power Supplies offer 80 PLUS Bronze efficiency and semi-modular cabling for reliable, low-noise operation. With Dual EPS12V cables and two/four PCIe 8-pin power connectors, CX-M PSUs have all the connections needed to power today’s most demanding PC upgrades. Japanese 105°C-rated capacitors deliver superb electrical performance and reliability for your system, backed by a five-year warranty. Robust DC-DC conversion ensures clean, consistent power for all your components and peripherals. With a compact 140mm size allowing for great flexibility in build configurations, CX-M Series power supplies deliver reliable power for nearly any build.
    See all Power Supplies
    See all Power Supplies
  5. CORSAIR - RMx Series RM1000x 80 PLUS Gold Fully Modular ATX Power Supply - Black - Front_Zoom
    Top comment

    "Power to the poeple!...It's also much larger than a standard ATX power supply, make sure you have room in your case for it. ...This power supply is a bit longer than a standard ATX power supply but offers Lots of power for use with multiple and/or high end graphics cards. "

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    Product Description

    CORSAIR RM1000x Series power supplies with EPS12V connectors are built with the highest quality components to deliver 80 PLUS Gold efficient power to your PC. RM1000x PSUs use only Japanese 105°C capacitors, for long life and reliability backed by a ten-year warranty. A 135mm magnetic levitation bearing fan ensures high performance coupled with low noise. Wake your computer faster and consume less power with support for Modern Standby sleep mode. Zero RPM mode ensures virtually silent operation at low and medium loads. Fully modular cables make PC builds and upgrades easy, as you need only connect the cables your system requires. An RM1000x PSU is quiet, efficient and dependable enough to power your high-performance PC for years to come.
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    Top comment

    "Power to the poeple!...It's also much larger than a standard ATX power supply, make sure you have room in your case for it. ...This power supply is a bit longer than a standard ATX power supply but offers Lots of power for use with multiple and/or high end graphics cards. "

    See all customer reviews

    Product Description

    CORSAIR RM1000x Series power supplies with EPS12V connectors are built with the highest quality components to deliver 80 PLUS Gold efficient power to your PC. RM1000x PSUs use only Japanese 105°C capacitors, for long life and reliability backed by a ten-year warranty. A 135mm magnetic levitation bearing fan ensures high performance coupled with low noise. Wake your computer faster and consume less power with support for Modern Standby sleep mode. Zero RPM mode ensures virtually silent operation at low and medium loads. Fully modular cables make PC builds and upgrades easy, as you need only connect the cables your system requires. An RM1000x PSU is quiet, efficient and dependable enough to power your high-performance PC for years to come.
    See all Power Supplies
    See all Power Supplies
  6. CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply - Black - Front_Zoom
    Top comment

    "Solid ATX Power Supply...This ATX Power Supply was procured to replace the old one in my desktop that failed to start the motherboard boot process. ...still prefer EVGA but CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply work fine,will see for how long,good support"

    See all customer reviews

    Product Description

    CORSAIR RM850x Series power supplies with EPS12V connectors are built with the highest quality components to deliver 80 PLUS Gold efficient power to your PC. RM850x PSUs use only Japanese 105°C capacitors, for long life and reliability backed by a ten-year warranty. A 135mm magnetic levitation bearing fan ensures high performance coupled with low noise. Wake your computer faster and consume less power with support for Modern Standby sleep mode. Zero RPM mode ensures virtually silent operation at low and medium loads. Fully modular cables make PC builds and upgrades easy, as you need only connect the cables your system requires. An RM850x PSU is quiet, efficient and dependable enough to power your high-performance PC for years to come.
    See all Power Supplies
    Top comment

    "Solid ATX Power Supply...This ATX Power Supply was procured to replace the old one in my desktop that failed to start the motherboard boot process. ...still prefer EVGA but CORSAIR - RMx Series RM850x 80 PLUS Gold Fully Modular ATX Power Supply work fine,will see for how long,good support"

    See all customer reviews

    Product Description

    CORSAIR RM850x Series power supplies with EPS12V connectors are built with the highest quality components to deliver 80 PLUS Gold efficient power to your PC. RM850x PSUs use only Japanese 105°C capacitors, for long life and reliability backed by a ten-year warranty. A 135mm magnetic levitation bearing fan ensures high performance coupled with low noise. Wake your computer faster and consume less power with support for Modern Standby sleep mode. Zero RPM mode ensures virtually silent operation at low and medium loads. Fully modular cables make PC builds and upgrades easy, as you need only connect the cables your system requires. An RM850x PSU is quiet, efficient and dependable enough to power your high-performance PC for years to come.
    See all Power Supplies
    See all Power Supplies
  7. CORSAIR - RMx Shift Series RM1200x 80 Plus Gold Fully Modular ATX Power Supply with Modular Side Interface - Black - Front_Zoom
    Top comment

    "Awesome Power Supply...It is nice to have the power connectors to the side. Easy for cable management....Good Power Supply For Power Hungry Parts...This is a great power supply for when you have 12th or 13th gen Intel chips and an Nvidia RTX card. "

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    Product Description

    CORSAIR RMx SHIFT Series fully modular power supplies boast a revolutionary side cable interface to keep all your connections within quick reach, for exceptionally convenient 80 PLUS Gold efficient power. With fully modular micro-fit connections and ATX 3.0 compliance, RMx SHIFT makes clean PC builds and upgrades even easier. RMx SHIFT PSUs use Japanese 105°C-rated electrolytic capacitors, for long life and reliability backed by a ten-year warranty. A 140mm fluid dynamic bearing fan utilizes a specially calculated fan curve for high performance and reliability with low noise, while Zero RPM mode support ensures virtually silent operation at low and medium loads. For quiet, efficient, and accessible power, put an RMx SHIFT Series PSU on your side.
    See all Power Supplies
    Top comment

    "Awesome Power Supply...It is nice to have the power connectors to the side. Easy for cable management....Good Power Supply For Power Hungry Parts...This is a great power supply for when you have 12th or 13th gen Intel chips and an Nvidia RTX card. "

    See all customer reviews

    Product Description

    CORSAIR RMx SHIFT Series fully modular power supplies boast a revolutionary side cable interface to keep all your connections within quick reach, for exceptionally convenient 80 PLUS Gold efficient power. With fully modular micro-fit connections and ATX 3.0 compliance, RMx SHIFT makes clean PC builds and upgrades even easier. RMx SHIFT PSUs use Japanese 105°C-rated electrolytic capacitors, for long life and reliability backed by a ten-year warranty. A 140mm fluid dynamic bearing fan utilizes a specially calculated fan curve for high performance and reliability with low noise, while Zero RPM mode support ensures virtually silent operation at low and medium loads. For quiet, efficient, and accessible power, put an RMx SHIFT Series PSU on your side.
    See all Power Supplies
    See all Power Supplies
  8. CORSAIR - HXi Series HX1500i 80 PLUS Platinum Fully Modular Ultra-Low Noise ATX Power Supply - Black - Front_Zoom
    Top comment

    "Banging Power Supply...Great power supply for my 4080! Be aware, this beast runs 12.5 amps!...Great power supply,great performance ,no issues al...Great power supply,great performance ,no issues all so far"

    See all customer reviews

    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. With three EPS12V connectors, 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
    Top comment

    "Banging Power Supply...Great power supply for my 4080! Be aware, this beast runs 12.5 amps!...Great power supply,great performance ,no issues al...Great power supply,great performance ,no issues all so far"

    See all customer reviews

    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. With three EPS12V connectors, 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
  9. CORSAIR - RMx Shift Series RM1000x 80 Plus Gold Fully Modular ATX Power Supply with Modular Side Interface - Black - Front_Zoom
    Top comment

    "Good warranty, Good Brand, Plenty of power....This is plenty of modern power for most of the newest cards. The plugs that go into the power supply are so tiny, but seems to be fine so far. ...The shift is an unique PSU that you can plug the the power cables to the side of the power supply. Makes it easy to cable manage. "

    See all customer reviews

    Product Description

    CORSAIR RMx SHIFT Series fully modular power supplies boast a revolutionary side cable interface to keep all your connections within quick reach, for exceptionally convenient 80 PLUS Gold efficient power. With fully modular micro-fit connections and ATX 3.0 compliance, RMx SHIFT makes clean PC builds and upgrades even easier. RMx SHIFT PSUs use Japanese 105°C-rated electrolytic capacitors, for long life and reliability backed by a ten-year warranty. A 140mm fluid dynamic bearing fan utilizes a specially calculated fan curve for high performance and reliability with low noise, while Zero RPM mode support ensures virtually silent operation at low and medium loads. For quiet, efficient, and accessible power, put an RMx SHIFT Series PSU on your side.
    See all Power Supplies
    Top comment

    "Good warranty, Good Brand, Plenty of power....This is plenty of modern power for most of the newest cards. The plugs that go into the power supply are so tiny, but seems to be fine so far. ...The shift is an unique PSU that you can plug the the power cables to the side of the power supply. Makes it easy to cable manage. "

    See all customer reviews

    Product Description

    CORSAIR RMx SHIFT Series fully modular power supplies boast a revolutionary side cable interface to keep all your connections within quick reach, for exceptionally convenient 80 PLUS Gold efficient power. With fully modular micro-fit connections and ATX 3.0 compliance, RMx SHIFT makes clean PC builds and upgrades even easier. RMx SHIFT PSUs use Japanese 105°C-rated electrolytic capacitors, for long life and reliability backed by a ten-year warranty. A 140mm fluid dynamic bearing fan utilizes a specially calculated fan curve for high performance and reliability with low noise, while Zero RPM mode support ensures virtually silent operation at low and medium loads. For quiet, efficient, and accessible power, put an RMx SHIFT Series PSU on your side.
    See all Power Supplies
    See all Power Supplies
  10. Thermaltake - Toughpower TF1 1550W 80 PLUS Titanium Fully Modular ATX Power Supply - Black - Front_Zoom
    Top comment

    "The turbo button has stopped holding itself, it is the button of full power giving 100% to the fan of the power supply, and I have to hold it by myself, apparently the plastic which secured it in one position came off during the first minutes of ownership (for that I would lower the rating still, but maybe it is my problem and my mistake when installing the unit in the case)"

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    Product Description

    Designed for overclockers, user’s with high-end system demands, and more, the Toughpower TF1 Titanium 1550W delivers 80 PLUS Titanium efficiency to satisfy their needs. Besides the critical features like <30mV low ripple noise, extremely strict Voltage Regulation ±2%, and Hold up time> 16 milliseconds, Thermaltake also added three vital features to make sure Toughpower TF1 Titanium 1550W can consistently and safely power up the whole system. Firstly, Low Transient Response Secondly, Inrush current 50 Ampere. Lastly, 12V OCP protection is covered. With all the advantages plus a 10-years warranty, the Toughpower TF1 Titanium 1550W can satisfy the market, where PC enthusiasts are looking for a premium power supply with all the latest features.
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    Top comment

    "The turbo button has stopped holding itself, it is the button of full power giving 100% to the fan of the power supply, and I have to hold it by myself, apparently the plastic which secured it in one position came off during the first minutes of ownership (for that I would lower the rating still, but maybe it is my problem and my mistake when installing the unit in the case)"

    See all customer reviews

    Product Description

    Designed for overclockers, user’s with high-end system demands, and more, the Toughpower TF1 Titanium 1550W delivers 80 PLUS Titanium efficiency to satisfy their needs. Besides the critical features like <30mV low ripple noise, extremely strict Voltage Regulation ±2%, and Hold up time> 16 milliseconds, Thermaltake also added three vital features to make sure Toughpower TF1 Titanium 1550W can consistently and safely power up the whole system. Firstly, Low Transient Response Secondly, Inrush current 50 Ampere. Lastly, 12V OCP protection is covered. With all the advantages plus a 10-years warranty, the Toughpower TF1 Titanium 1550W can satisfy the market, where PC enthusiasts are looking for a premium power supply with all the latest features.
    See all Power Supplies
    See all Power Supplies
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