Main Content

efficient power supplies

Best Buy customers often prefer the following products when searching for Efficient Power Supplies.

Browse the top-ranked list of Efficient Power Supplies below along with associated reviews and opinions.

Browse the top-ranked list of Efficient Power Supplies below along with associated reviews and opinions.

Main Results
  1. Top comment

    "5 star...Not bad...Excellent efficient Power Supply...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."

    "Excellent efficient Power Supply"

    Hear more from customers

    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.
    $79.99
    Top comment

    "5 star...Not bad...Excellent efficient Power Supply...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."

    "Excellent efficient Power Supply"

    Hear more from customers

    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.
  2. Top comment

    "Love it...IT Works...Works well, good efficiency apparently....When I saw this item for sale, I snatched up 2 so I'd have a better spare supply and placed 1 in his computer which now has all the SATA connections where I need them and my SSD is not mounted precariously in a 5.25" bay."

    "Works well, good efficiency apparently."

    Hear more from customers

    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.
    $39.99
    Save $15
    Was $54.99
    Top comment

    "Love it...IT Works...Works well, good efficiency apparently....When I saw this item for sale, I snatched up 2 so I'd have a better spare supply and placed 1 in his computer which now has all the SATA connections where I need them and my SSD is not mounted precariously in a 5.25" bay."

    "Works well, good efficiency apparently."

    Hear more from customers

    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.
  3. Model:110-BQ-0850-V1
    SKU:5594501
    Top comment

    "Great PS...good psu...Very efficient PSU...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."

    "Very efficient PSU"

    Hear more from customers

    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.
    $119.99
    Top comment

    "Great PS...good psu...Very efficient PSU...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."

    "Very efficient PSU"

    Hear more from customers

    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.
  4. Top comment

    "Love it...It's ok...Versatile Powersupply, high efficiency...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"

    "Versatile Powersupply, high efficiency"

    Hear more from customers

    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.
    $69.99
    Top comment

    "Love it...It's ok...Versatile Powersupply, high efficiency...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"

    "Versatile Powersupply, high efficiency"

    Hear more from customers

    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.
  5. Top comment

    "Good PS...Love it!...The good quality PSU has an 80% efficiency....This hard drive is great I purchased it to power a budget gaming rig and this power supply works great and his strong enough to power most higher end graphics cards."

    "The good quality PSU has an 80% efficiency."

    Hear more from customers

    Product Description

    TR2 series is designed with mainstream PC in mind. With Thermaltake's state-of-the-art circuitry design capability and advanced packaging technology, it is capable of providing the same level of high efficiency and power protection that you have come to expect from Thermaltake's full range of power supply. TR2 series power supply all carries an industry-leading 5 Year Limited Warranty for the ultimate piece of mind.
    $48.99
    Save $21
    Was $69.99
    Top comment

    "Good PS...Love it!...The good quality PSU has an 80% efficiency....This hard drive is great I purchased it to power a budget gaming rig and this power supply works great and his strong enough to power most higher end graphics cards."

    "The good quality PSU has an 80% efficiency."

    Hear more from customers

    Product Description

    TR2 series is designed with mainstream PC in mind. With Thermaltake's state-of-the-art circuitry design capability and advanced packaging technology, it is capable of providing the same level of high efficiency and power protection that you have come to expect from Thermaltake's full range of power supply. TR2 series power supply all carries an industry-leading 5 Year Limited Warranty for the ultimate piece of mind.
  6. Top comment

    "good PSU...Great PS...Quiet and efficient....Bought my third power supply after blowing the second time ughhh this power supply is good for casual gaming with a casual set up I have Amd- 4170/8gb ram/ 500gb hard drive/ Amd- 6770/ with no combo drive installed puts it below 350 wats which is fine for casual gaming I will have to upgrade later for a better PC setup---- The power supply is working fine but ill advise not to buy this if your going for a higher end PC set up that will require more watts"

    "Quiet and efficient."

    Hear more from customers

    Product Description

    This 430W power supply supports most Intel® and AMD processors and is compatible with NVIDIA and ATI/AMD graphics cards for wide-ranging compatibility. Built-in fans automatically adjust speed according to temperature for low operating noise.
    $38.99
    Save $11
    Was $49.99
    Top comment

    "good PSU...Great PS...Quiet and efficient....Bought my third power supply after blowing the second time ughhh this power supply is good for casual gaming with a casual set up I have Amd- 4170/8gb ram/ 500gb hard drive/ Amd- 6770/ with no combo drive installed puts it below 350 wats which is fine for casual gaming I will have to upgrade later for a better PC setup---- The power supply is working fine but ill advise not to buy this if your going for a higher end PC set up that will require more watts"

    "Quiet and efficient."

    Hear more from customers

    Product Description

    This 430W power supply supports most Intel® and AMD processors and is compatible with NVIDIA and ATI/AMD graphics cards for wide-ranging compatibility. Built-in fans automatically adjust speed according to temperature for low operating noise.
  7. Top comment

    "Great PS...Love it....this one does not run as hot and seems to be more efficient...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."

    "this one does not run as hot and seems to be more efficient"

    Hear more from customers

    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.
    $69.99
    Top comment

    "Great PS...Love it....this one does not run as hot and seems to be more efficient...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."

    "this one does not run as hot and seems to be more efficient"

    Hear more from customers

    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.
  8. Top comment

    "Good PSU...Great PSU...I am suprised this power supply has pushed my computer power up and it makes everything run better thanks for the good work you did I am very happy with it....I purchased this InsigniaT - 450W ATX12V 2.4/EPS12V 2.92 Power Supply and I was up and running in 15 minutes."

    ""

    Hear more from customers

    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.
    $34.99
    Save $10
    Was $44.99
    Top comment

    "Good PSU...Great PSU...I am suprised this power supply has pushed my computer power up and it makes everything run better thanks for the good work you did I am very happy with it....I purchased this InsigniaT - 450W ATX12V 2.4/EPS12V 2.92 Power Supply and I was up and running in 15 minutes."

    ""

    Hear more from customers

    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.
  9. Top comment

    "its good...Great PSU...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...I haven't looked into whether it would be possible to buy an adapter, as I don't really use the DVD drive."

    ""

    Hear more from customers

    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.
    $44.99
    Save $10
    Was $54.99
    Top comment

    "its good...Great PSU...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...I haven't looked into whether it would be possible to buy an adapter, as I don't really use the DVD drive."

    ""

    Hear more from customers

    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.
  10. Top comment

    "Love it...good psu...Good power supply, good power supply, good power supply...I was using a stock power supply and my PC was on the brink of overload when I upgraded my graphics card."

    ""

    Hear more from customers

    Product Description

    Run your computer efficiently with this Corsair semi-modular power supply. Its thermally controlled fan provides super-quiet operation at low and medium loads, and its space-saving cabling system reduces clutter for improved airflow. This 550W Corsair semi-modular power supply is 80 PLUS Bronze certified for less excess heat and lower operating costs.
    $64.99
    Top comment

    "Love it...good psu...Good power supply, good power supply, good power supply...I was using a stock power supply and my PC was on the brink of overload when I upgraded my graphics card."

    ""

    Hear more from customers

    Product Description

    Run your computer efficiently with this Corsair semi-modular power supply. Its thermally controlled fan provides super-quiet operation at low and medium loads, and its space-saving cabling system reduces clutter for improved airflow. This 550W Corsair semi-modular power supply is 80 PLUS Bronze certified for less excess heat and lower operating costs.
  11. Top comment

    "5 star...Great P/S...I bought this power supply for my custom PC build and love the fact that it is fully modular....The RMx series of power supplies will not disappoint even the the most discerning consumer."

    ""

    Hear more from customers

    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.
    $112.99
    Save $17
    Was $129.99
    Top comment

    "5 star...Great P/S...I bought this power supply for my custom PC build and love the fact that it is fully modular....The RMx series of power supplies will not disappoint even the the most discerning consumer."

    ""

    Hear more from customers

    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.
  12. Top comment

    "Good PSU...The Best...I upgraded to the EVGA 850w Gold Plus and I couldn't be happier with this selection....I like how this power supply allows for cables to be added or skipped which reduces the cluster inside the chassis."

    ""

    Hear more from customers

    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.
    $142.99
    Save $2
    Was $144.99
    Top comment

    "Good PSU...The Best...I upgraded to the EVGA 850w Gold Plus and I couldn't be happier with this selection....I like how this power supply allows for cables to be added or skipped which reduces the cluster inside the chassis."

    ""

    Hear more from customers

    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.
  13. Top comment

    "Love it....Good buy...1000 watt Gold modular power supply, excellent PSU with steady power and plenty of hook ups...Updating my computer with the only power supply I found that is top of the line for all my computer uses...."

    ""

    Hear more from customers

    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.
    $189.99
    Top comment

    "Love it....Good buy...1000 watt Gold modular power supply, excellent PSU with steady power and plenty of hook ups...Updating my computer with the only power supply I found that is top of the line for all my computer uses...."

    ""

    Hear more from customers

    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.
  14. Top comment

    "Great PSU...works great...I have this power supply giving power to a gtx 1070ti and a i7-8700k and have no issues with it at all....Corsair products are affordable which this was and more than enough power than I need so if you recently got an Alienware Aurora R7 I personally recommend Corsair over the crap dell has but at the end of the day it's your choice but don't get mad when dell/Alienware tech support can't help you with your system not working to it's full potential ; )"

    ""

    Hear more from customers

    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.
    $99.99
    Save $20
    Was $119.99
    Top comment

    "Great PSU...works great...I have this power supply giving power to a gtx 1070ti and a i7-8700k and have no issues with it at all....Corsair products are affordable which this was and more than enough power than I need so if you recently got an Alienware Aurora R7 I personally recommend Corsair over the crap dell has but at the end of the day it's your choice but don't get mad when dell/Alienware tech support can't help you with your system not working to it's full potential ; )"

    ""

    Hear more from customers

    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.
  15. Top comment

    "The best...Works great!...I was kind of disappointed that my surface pro that I have had for less than 6 months needed a new power cord...but this one works great and haven't had any issues since....Surface pro power supply is working just great, for our surface pro, it keep the power up"

    ""

    Hear more from customers

    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.
    $39.99
    Top comment

    "The best...Works great!...I was kind of disappointed that my surface pro that I have had for less than 6 months needed a new power cord...but this one works great and haven't had any issues since....Surface pro power supply is working just great, for our surface pro, it keep the power up"

    ""

    Hear more from customers

    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.