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400w power supply

Best Buy customers often prefer the following products when searching for 400w Power Supply.

Browse the top-ranked list of 400w Power Supply below along with associated reviews and opinions.

Browse the top-ranked list of 400w Power Supply below along with associated reviews and opinions.

Main Results
  1. CORSAIR - CX Series Modular CX750M 750W 80 Plus Bronze ATX Power Supply - Black - Front_Standard
    Top comment

    "Bang for the buck...Good power supply nice power supply - I only upgrade every couple years and this power source was good I didn't realize that the motherboard connectors had changed ( alittle from 8 pin to 4 pin) but this one has power connections that could split for just such and issue - a nice feature...This power supply does come with peripheral cables that end in a female molex, but it is up to you to purchase the cable that can hook these up to the remaining 3 pin fan power cables"

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    Product Description

    This Corsair CX Series Modular CX750M CP-9020061-NA power supply features over- and under-voltage, over-power and short-circuit protection to prevent damage to your components. The flexible modular cabling system accommodates your system configuration.
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    Your price for this item is $89.99
    Save $10
    The previous price was $99.99
    Top comment

    "Bang for the buck...Good power supply nice power supply - I only upgrade every couple years and this power source was good I didn't realize that the motherboard connectors had changed ( alittle from 8 pin to 4 pin) but this one has power connections that could split for just such and issue - a nice feature...This power supply does come with peripheral cables that end in a female molex, but it is up to you to purchase the cable that can hook these up to the remaining 3 pin fan power cables"

    ""

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    Product Description

    This Corsair CX Series Modular CX750M CP-9020061-NA power supply features over- and under-voltage, over-power and short-circuit protection to prevent damage to your components. The flexible modular cabling system accommodates your system configuration.
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  2. EVGA - 600W ATX 12V/EPS 12V 80 Plus Power Supply - Black - Front_Zoom
    Top comment

    "Does a great job...PSU does the job...However, if you can find this power supply on sale for anything less than $45, I would highly recommend picking this power supply up as it is a very reliable and relatively higher watt power supply...Evga - 80 Plus 600w Atx 12v/eps 12v Power Supply - Black Create a functional, efficient computer by adding this 600W EVGA 80 PLUS 100-W1-0600-K1 ATX 12V/EPS 12V power supply to your custom build"

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    Product Description

    Create a functional, efficient computer by adding this 600W EVGA 80 PLUS 100-W1-0600-K1 ATX 12V/EPS 12V power supply to your custom build. An ultraquiet, intelligent auto fan cools components without generating much noise during operation.
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    Your price for this item is $59.99
    Top comment

    "Does a great job...PSU does the job...However, if you can find this power supply on sale for anything less than $45, I would highly recommend picking this power supply up as it is a very reliable and relatively higher watt power supply...Evga - 80 Plus 600w Atx 12v/eps 12v Power Supply - Black Create a functional, efficient computer by adding this 600W EVGA 80 PLUS 100-W1-0600-K1 ATX 12V/EPS 12V power supply to your custom build"

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    Product Description

    Create a functional, efficient computer by adding this 600W EVGA 80 PLUS 100-W1-0600-K1 ATX 12V/EPS 12V power supply to your custom build. An ultraquiet, intelligent auto fan cools components without generating much noise during operation.
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  3. Thermaltake - Smart Series 650W ATX 12V v2.3/EPS 12V 80 Plus Power Supply - Black - Front_Standard
    Top comment

    "It is also quiet...Nice at the price...This power supply is your basic power supply; it gets the job done, plus a toggle power switch--which isn't on every power supply I've ever owned, but now I don't want to not have it...I really like this power supply because it has flat cables Usually power supplies have cables that are zip tied together This really makes it nice power supply for gaming rigs"

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    Product Description

    This Thermaltake SMART Series SP-650P power supply delivers 650W maximum output and 780W peak output and supports Intel® ATX 12V v2.3 and EPS 12V standards. A 120mm fan with intelligent temperature control cools your components.
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    Your price for this item is $69.99
    Top comment

    "It is also quiet...Nice at the price...This power supply is your basic power supply; it gets the job done, plus a toggle power switch--which isn't on every power supply I've ever owned, but now I don't want to not have it...I really like this power supply because it has flat cables Usually power supplies have cables that are zip tied together This really makes it nice power supply for gaming rigs"

    ""

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    Product Description

    This Thermaltake SMART Series SP-650P power supply delivers 650W maximum output and 780W peak output and supports Intel® ATX 12V v2.3 and EPS 12V standards. A 120mm fan with intelligent temperature control cools your components.
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  4. EVGA - 850W Modular BQ Power Supply - Black - Front_Zoom
    Model:110-BQ-0850-V1
    SKU:5594501
    Top comment

    "EVGA is the best...It is very quiet...Had power surge and power supply unit died ,bought Evga - 850W Modular BQ Power Supply ,installed it in about 10 minutes up and running...I upgraded from an Nvidia 960 2Gig video card to a 1070 8Gig and when I went to install the card realized I only had a 550 watt power supply with one 8pin connector which was being used by the motherboard (the 960 only needed a six pin connector) I bought this power supply because it is modular and comes with 4 eight pin connectors so it will run my 1070 without issue"

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    Product Description

    Power your customized desktop computer with this EVGA power supply. The large built-in fan prevents it from overheating during heavy use, and the sturdy box construction makes it easy to mount externally or install in your computer shell. This EVGA power supply comes with all the cords needed for installation.
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    Your price for this item is $119.99
    Top comment

    "EVGA is the best...It is very quiet...Had power surge and power supply unit died ,bought Evga - 850W Modular BQ Power Supply ,installed it in about 10 minutes up and running...I upgraded from an Nvidia 960 2Gig video card to a 1070 8Gig and when I went to install the card realized I only had a 550 watt power supply with one 8pin connector which was being used by the motherboard (the 960 only needed a six pin connector) I bought this power supply because it is modular and comes with 4 eight pin connectors so it will run my 1070 without issue"

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    Product Description

    Power your customized desktop computer with this EVGA power supply. The large built-in fan prevents it from overheating during heavy use, and the sturdy box construction makes it easy to mount externally or install in your computer shell. This EVGA power supply comes with all the cords needed for installation.
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  5. CORSAIR - CX-M Series 650W ATX12V 2.4/EPS12V 2.92 80 Plus Bronze Modular Power Supply - Matte black - Front_Zoom
    Top comment

    "I'd buy it again...Modular is a plus...I can't believe how much better my desktop is performing after upgrading my power supply from a 450 W to this 650 W system...Corsair makes a great power supply I have two cx 750 power supply's that I have been using in my home built computers windows 10 machines with two gtx 970 video cards running I sli for 4 years now still going strong"

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    Product Description

    Power your custom-built computer with this CORSAIR power supply. It's built for efficient operation, so it saves energy and doesn’t produce much heat, and it operates quietly at slow and medium speeds for a better work environment. The modular cable system of this CORSAIR power supply provides easy, clutter-free installation in compatible ATX desktop cases.
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    Your price for this item is $79.99
    Save $10
    The previous price was $89.99
    Top comment

    "I'd buy it again...Modular is a plus...I can't believe how much better my desktop is performing after upgrading my power supply from a 450 W to this 650 W system...Corsair makes a great power supply I have two cx 750 power supply's that I have been using in my home built computers windows 10 machines with two gtx 970 video cards running I sli for 4 years now still going strong"

    ""

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    Product Description

    Power your custom-built computer with this CORSAIR power supply. It's built for efficient operation, so it saves energy and doesn’t produce much heat, and it operates quietly at slow and medium speeds for a better work environment. The modular cable system of this CORSAIR power supply provides easy, clutter-free installation in compatible ATX desktop cases.
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  6. Insignia™ - 450W ATX12V 2.4/EPS12V 2.92 80 Plus Power Supply - Gray - Front_Zoom
    Top comment

    "Good in a clutch...I am very pleased...The power supply on my wife's desktop was damaged by a power surge and this power supply got us back up and running...This 450W Power Supply has performed flawlessly from day 1 and the additional feature of a Main Power Switch on the back of the unit is an added benefit for not having to disconnect the power cord for a positive, total shutdown & reboot"

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    Product Description

    Keep your computer running well with this Insignia power supply. It produces 450W for better game and program performance, and its short circuit and over/under voltage protection prevent surges from harming your electronic devices. This Insignia power supply has a thermostat-controlled, low-noise fan to regulate temperatures without causing any disturbances.
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    Your price for this item is $44.99
    Top comment

    "Good in a clutch...I am very pleased...The power supply on my wife's desktop was damaged by a power surge and this power supply got us back up and running...This 450W Power Supply has performed flawlessly from day 1 and the additional feature of a Main Power Switch on the back of the unit is an added benefit for not having to disconnect the power cord for a positive, total shutdown & reboot"

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    Product Description

    Keep your computer running well with this Insignia power supply. It produces 450W for better game and program performance, and its short circuit and over/under voltage protection prevent surges from harming your electronic devices. This Insignia power supply has a thermostat-controlled, low-noise fan to regulate temperatures without causing any disturbances.
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  7. CORSAIR - RMx Series 850W ATX12V 2.4/EPS12V 2.92 80 Plus Gold Modular Power Supply - Black - Front_Zoom
    Top comment

    "Can't ask for more...Works like a charm...I bought this power supply for my custom PC build and love the fact that it is fully modular...I purchased this Corsair and not only is there absolutely no noise while gaming, there's virtually no noise at all from the power supply"

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    Product Description

    Build an efficient, high-performance computer with this 850W Corsair RMx power supply unit. Its industrial-grade Japanese capacitors ensure solid power delivery, and it's fully modular for flexible configuration. Set this 80 PLUS Gold-rated Corsair RMx power supply unit on zero fan mode for quiet operation during low and medium loads.
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    Your price for this item is $139.99
    Top comment

    "Can't ask for more...Works like a charm...I bought this power supply for my custom PC build and love the fact that it is fully modular...I purchased this Corsair and not only is there absolutely no noise while gaming, there's virtually no noise at all from the power supply"

    ""

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    Product Description

    Build an efficient, high-performance computer with this 850W Corsair RMx power supply unit. Its industrial-grade Japanese capacitors ensure solid power delivery, and it's fully modular for flexible configuration. Set this 80 PLUS Gold-rated Corsair RMx power supply unit on zero fan mode for quiet operation during low and medium loads.
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  8. EVGA - 850W ATX12V / EPS12V 80 Plus Gold Modular Power Supply - Black - Front_Zoom
    Top comment

    "EVGA is the best...So far no issues...This power supply is awesome to help with cable management and the needed power to keep up with higher end graphics cards...No issues, would highly recommend this power supply to someone building their first PC or upgrading to a higher Watt power supply"

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    Product Description

    Enjoy silent operation with this EVGA power supply. The ECO mode prevents the fan from running during low to medium loads, activating it only when needed, and the high-quality capacitors deliver 90 percent efficiency under typical loads. This EVGA power supply accommodates multiple NVIDIA graphics cards for high-performance gaming in stunning detail.
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    Your price for this item is $159.99
    Top comment

    "EVGA is the best...So far no issues...This power supply is awesome to help with cable management and the needed power to keep up with higher end graphics cards...No issues, would highly recommend this power supply to someone building their first PC or upgrading to a higher Watt power supply"

    ""

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    Product Description

    Enjoy silent operation with this EVGA power supply. The ECO mode prevents the fan from running during low to medium loads, activating it only when needed, and the high-quality capacitors deliver 90 percent efficiency under typical loads. This EVGA power supply accommodates multiple NVIDIA graphics cards for high-performance gaming in stunning detail.
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  9. Insignia™ - 550W ATX12V 2.4/EPS12V 2.92 80 Plus Bronze Power Supply - Gray - Front_Zoom
    Top comment

    "Very happy with it...Lots of nice cords...I purchase this for a replacement power supply for my desktop computer and home I found this power supply more then good enough for my computer its had good long connections for all the drives works quietly and its have plenty of additional connections for future hardware updates and upgrades...the wattage I get out of this power supply is enough to power a 1080 TI, while I do not suggest doing that, it certainly can handle it"

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    Product Description

    Add this Insignia power supply to your next desktop computer build. It delivers 550W RMS of stable, continuous power for your system, and its thermostat-controlled 120mm fan runs quietly, so it won't interfere with indoor activities. This Insignia power supply has short circuit defense and overvoltage protection for added safety.
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    Your price for this item is $34.99
    Save $20
    The previous price was $54.99
    Top comment

    "Very happy with it...Lots of nice cords...I purchase this for a replacement power supply for my desktop computer and home I found this power supply more then good enough for my computer its had good long connections for all the drives works quietly and its have plenty of additional connections for future hardware updates and upgrades...the wattage I get out of this power supply is enough to power a 1080 TI, while I do not suggest doing that, it certainly can handle it"

    ""

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    Product Description

    Add this Insignia power supply to your next desktop computer build. It delivers 550W RMS of stable, continuous power for your system, and its thermostat-controlled 120mm fan runs quietly, so it won't interfere with indoor activities. This Insignia power supply has short circuit defense and overvoltage protection for added safety.
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  10. CORSAIR - RMx Series 750W ATX12V 2.4/EPS12V 2.92 80 Plus Gold Modular Power Supply - Black - Front_Zoom
    Top comment

    "Great for a htpc...Runs like a charm...I used this power supply to power my ryzen 2700x, rx 590, an Ssd and an mv2 Ssd, 7200 rpm, asus crosshairs hero vi and an Corsair h100i platinum Rgb liquid cooler and a lot of fans...I have this power supply giving power to a gtx 1070ti and a i7-8700k and have no issues with it at all"

    ""

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    Product Description

    Support your custom desktop with this 750W Corsair RMx power supply. It has an 80 PLUS Gold efficiency rating for lower power consumption, and its 100 percent Japanese capacitors provide long-lasting performance. This fully modular Corsair RMx power supply lets you set up a tidy computer hardware system with plenty of power.
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    Your price for this item is $129.99
    Top comment

    "Great for a htpc...Runs like a charm...I used this power supply to power my ryzen 2700x, rx 590, an Ssd and an mv2 Ssd, 7200 rpm, asus crosshairs hero vi and an Corsair h100i platinum Rgb liquid cooler and a lot of fans...I have this power supply giving power to a gtx 1070ti and a i7-8700k and have no issues with it at all"

    ""

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    Product Description

    Support your custom desktop with this 750W Corsair RMx power supply. It has an 80 PLUS Gold efficiency rating for lower power consumption, and its 100 percent Japanese capacitors provide long-lasting performance. This fully modular Corsair RMx power supply lets you set up a tidy computer hardware system with plenty of power.
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  11. EVGA - 1000W ATX /EPS 80 Plus Gold Modular Power Supply - Black - Front_Zoom
    Top comment

    "No issues at all...Work great so far...This power supply has plenty of connections and more than enough power for a high end gaming machine...1000 watt Gold modular power supply, excellent PSU with steady power and plenty of hook ups"

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    Product Description

    Build a? computer? system your way with the EVGA Supernova power supply. Small but mighty, it provides a reliable power source with a small footprint that leaves space for additional components in your computer case. The EVGA Supernova features fluid bearings for quiet performance and uses authentic Japanese capacitors for a long and reliable life.
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    Your price for this item is $159.99
    Save $40
    The previous price was $199.99
    Top comment

    "No issues at all...Work great so far...This power supply has plenty of connections and more than enough power for a high end gaming machine...1000 watt Gold modular power supply, excellent PSU with steady power and plenty of hook ups"

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    Product Description

    Build a? computer? system your way with the EVGA Supernova power supply. Small but mighty, it provides a reliable power source with a small footprint that leaves space for additional components in your computer case. The EVGA Supernova features fluid bearings for quiet performance and uses authentic Japanese capacitors for a long and reliable life.
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  12. Microsoft - Surface 24W Power Supply - Black - Front_Zoom
    Top comment

    "Works like a charm...Great extra to have...Surface pro power supply is working just great, for our surface pro, it keep the power up...Great backup charger, 4 hours for my surface book 6 and way cheaper"

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    Product Description

    Made exclusively for Surface* and designed to match its look and feel, the 24W power supply quickly recharges the battery, while the USB port lets you charge another device at the same time.
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    Your price for this item is $38.99
    Save $1
    The previous price was $39.99
    Top comment

    "Works like a charm...Great extra to have...Surface pro power supply is working just great, for our surface pro, it keep the power up...Great backup charger, 4 hours for my surface book 6 and way cheaper"

    ""

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    Product Description

    Made exclusively for Surface* and designed to match its look and feel, the 24W power supply quickly recharges the battery, while the USB port lets you charge another device at the same time.
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  13. CORSAIR - RMx Series 1000W ATX12V 2.4/EPS12V 2.92 80 Plus Gold Modular Power Supply - Black - Front_Zoom
    Top comment

    "Works as it says...This thing is beefy...This power supply is more than capable of providing constant, steady voltages for any computer load, especially over-clocked...My computer run fast with this power supply is great"

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    Product Description

    Run your high-performance PC with this CORSAIR RMx power supply. It’s made with Japanese 105 degree C capacitors for solid durability, and its Zero RPM fan mode provides optimal cooling and quiet operation for low-to-medium loads. This 80 PLUS Gold-certified CORSAIR RMx power supply comes with a fully modular cable set for efficient, clutter-free installation.
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    Your price for this item is $189.99
    Top comment

    "Works as it says...This thing is beefy...This power supply is more than capable of providing constant, steady voltages for any computer load, especially over-clocked...My computer run fast with this power supply is great"

    ""

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    Product Description

    Run your high-performance PC with this CORSAIR RMx power supply. It’s made with Japanese 105 degree C capacitors for solid durability, and its Zero RPM fan mode provides optimal cooling and quiet operation for low-to-medium loads. This 80 PLUS Gold-certified CORSAIR RMx power supply comes with a fully modular cable set for efficient, clutter-free installation.
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  14. Thermaltake - ToughPower Grand RGB 850W ATX12V 2.4/EPS12V 2.92 80 Plus Gold Modular Power Supply - Black - Front_Zoom
    Top comment

    "Quiet and trouble free...Nice and quiet as well...This is a great power supply with the caveat of don't run it at max...I used this power supply about 4mths and sound good"

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    Product Description

    Run your custom desktop with this 80 PLUS Gold-rated Thermaltake Toughpower Grand power supply. Its fully modular design enables a flexible, space-efficient cabling setup, and its customizable RGB LED ring makes it visually distinct. The hydraulic bearing fan of this 850W Thermaltake Toughpower Grand power supply has an anti-vibration mounting system for quiet operation.
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    Your price for this item is $127.99
    Save $2
    The previous price was $129.99
    Top comment

    "Quiet and trouble free...Nice and quiet as well...This is a great power supply with the caveat of don't run it at max...I used this power supply about 4mths and sound good"

    ""

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    Product Description

    Run your custom desktop with this 80 PLUS Gold-rated Thermaltake Toughpower Grand power supply. Its fully modular design enables a flexible, space-efficient cabling setup, and its customizable RGB LED ring makes it visually distinct. The hydraulic bearing fan of this 850W Thermaltake Toughpower Grand power supply has an anti-vibration mounting system for quiet operation.
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  15. Heise - 12V Power Supply - Multi - Front_Zoom
    Model:H-PS2
    SKU:4363308

    Product Description

    Power your compatible single-color LEDs with this Heise H-PS2 power supply, which provides 12V and 2-amp of power for illuminating the night in style. The lightweight design allows you to transport the power supply with ease.
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    Your price for this item is $19.99

    Product Description

    Power your compatible single-color LEDs with this Heise H-PS2 power supply, which provides 12V and 2-amp of power for illuminating the night in style. The lightweight design allows you to transport the power supply with ease.
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