Main Content

small computer power supplies

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

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

Browse the top-ranked list of Small Computer Power Supplies 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...So this psu supplies all the power I need thats for sure but when its under a heavy load it creates a nasty noise kinda high pitched nothing unbearable but I can hear it at night when I have to have my speakers turned down an im playing a high graphic game...I've been using this power supply around for a year so far and I'ven't got any problems at all, I am planing to get another one for a friend, I must say I that truly trust this power supply SINCE I run 24/7 OC on my fx-6300"

    ""

    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.
    Your price for this item is $99.99
    Top comment

    "Bang for the buck...So this psu supplies all the power I need thats for sure but when its under a heavy load it creates a nasty noise kinda high pitched nothing unbearable but I can hear it at night when I have to have my speakers turned down an im playing a high graphic game...I've been using this power supply around for a year so far and I'ven't got any problems at all, I am planing to get another one for a friend, I must say I that truly trust this power supply SINCE I run 24/7 OC on my fx-6300"

    ""

    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. EVGA - 600W ATX 12V/EPS 12V 80 Plus Power Supply - Black - Front_Zoom
    Top comment

    "Does a great job...PSU does the job...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...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"

    ""

    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.
    Your price for this item is $59.99
    Top comment

    "Does a great job...PSU does the job...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...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"

    ""

    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. 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...I bought this for a friends computer I was building and it was a steal at $52 more than enough power and 80 rated bronze...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"

    ""

    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.
    Your price for this item is $69.99
    Top comment

    "It is also quiet...Nice at the price...I bought this for a friends computer I was building and it was a steal at $52 more than enough power and 80 rated bronze...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"

    ""

    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.
  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...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...850w is enough power for anything I am currently using and I like that I can choose what power connections are on it, means less clutter in the case"

    ""

    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.
    Your price for this item is $119.99
    Top comment

    "EVGA is the best...It is very quiet...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...850w is enough power for anything I am currently using and I like that I can choose what power connections are on it, means less clutter in the case"

    ""

    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.
  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...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...then I try it in another build with an ASUS MOBO the system start with out Fans Spinning I knew that another fan was death New Asus Mobo's wont start with defective fans , I fix it replacing the Chasis Fan and everything work again I maybe crazy but I thisk this psu loves to Fry Fans"

    ""

    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.
    Your price for this item is $78.99
    Save $11
    The previous price was $89.99
    Top comment

    "I'd buy it again...Modular is a plus...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...then I try it in another build with an ASUS MOBO the system start with out Fans Spinning I knew that another fan was death New Asus Mobo's wont start with defective fans , I fix it replacing the Chasis Fan and everything work again I maybe crazy but I thisk this psu loves to Fry Fans"

    ""

    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.
  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...I wouldn't suggest this power supply for a computer with a higher end video card, or a gaming machine, but it's perfect for most basic computer systems...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"

    ""

    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.
    Your price for this item is $44.99
    Top comment

    "Good in a clutch...I am very pleased...I wouldn't suggest this power supply for a computer with a higher end video card, or a gaming machine, but it's perfect for most basic computer systems...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"

    ""

    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.
  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 haven't built a PC in probably 10 years and couldn't believe I would need 850 Watts, but I did and this thing works fantastic and it's quiet...For the best of a system I have msi GODLIKE i9 9900k 5.1 OC msi RTX 2070 Gaming Z OC on top of msi OC Corsair Dominator Platinum 64GB and all my Corsair products She can hold power"

    ""

    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.
    Your price for this item is $139.99
    Top comment

    "Can't ask for more...Works like a charm...I haven't built a PC in probably 10 years and couldn't believe I would need 850 Watts, but I did and this thing works fantastic and it's quiet...For the best of a system I have msi GODLIKE i9 9900k 5.1 OC msi RTX 2070 Gaming Z OC on top of msi OC Corsair Dominator Platinum 64GB and all my Corsair products She can hold power"

    ""

    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.
  8. EVGA - 850W ATX12V / EPS12V 80 Plus Gold Modular Power Supply - Black - Front_Zoom
    Top comment

    "EVGA is the best...So far no issues...I got this power supply a few months ago for a awesome price so this is a very high quality PS it feels very solid and works great with no issues at all...This power supply is awesome to help with cable management and the needed power to keep up with higher end graphics cards"

    ""

    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.
    Your price for this item is $119.99
    Save $40
    The previous price was $159.99
    Top comment

    "EVGA is the best...So far no issues...I got this power supply a few months ago for a awesome price so this is a very high quality PS it feels very solid and works great with no issues at all...This power supply is awesome to help with cable management and the needed power to keep up with higher end graphics cards"

    ""

    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.
  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"

    ""

    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.
    Your price for this item is $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"

    ""

    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. 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 have this power supply giving power to a gtx 1070ti and a i7-8700k and have no issues with it at all...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"

    ""

    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.
    Your price for this item is $99.99
    Save $30
    The previous price was $129.99
    Top comment

    "Great for a htpc...Runs like a charm...I have this power supply giving power to a gtx 1070ti and a i7-8700k and have no issues with it at all...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"

    ""

    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.
  11. EVGA - 1000W ATX /EPS 80 Plus Gold Modular Power Supply - Black - Front_Zoom
    Top comment

    "No issues at all...Work great so far...Updating my computer with the only power supply I found that is top of the line for all my computer uses...EVGA makes great video cards and I have read a lot of good things about their power supplies"

    ""

    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.
    Your price for this item is $147.99
    Save $52
    The previous price was $199.99
    Top comment

    "No issues at all...Work great so far...Updating my computer with the only power supply I found that is top of the line for all my computer uses...EVGA makes great video cards and I have read a lot of good things about their power supplies"

    ""

    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.
  12. 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...I don't drive my vette 150 mph, but it is nice to know I could...No issues and had more than enough power for all components"

    ""

    Hear more from customers

    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.
    Your price for this item is $189.99
    Top comment

    "Works as it says...This thing is beefy...I don't drive my vette 150 mph, but it is nice to know I could...No issues and had more than enough power for all components"

    ""

    Hear more from customers

    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.
  13. 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...The RGB was just a small bonus"

    ""

    Hear more from customers

    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.
    Your price for this item is $120.99
    Save $9
    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...The RGB was just a small bonus"

    ""

    Hear more from customers

    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.
  14. EVGA - 850W ATX12V / EPS12V Modular Power Supply - Black - Front_Zoom
    Top comment

    "- Really cool package contents...The efficiency is just amazing...Pros: - Power consumption: I plugged my power strip into a wattage meter...The power saver switch is nice - I love the design and lay out of the cables"

    ""

    Hear more from customers

    Product Description

    Support your high-performance computer system with this EVGA SuperNova G3 power supply. Its hydraulic dynamic bearing fan operates quietly and provides outstanding longevity, and a fully modular design provides setup flexibility. This 80 Plus Gold-certified EVGA SuperNova G3 has an 850W power supply to handle maximum loads from multiple components efficiently.
    Your price for this item is $159.99
    Top comment

    "- Really cool package contents...The efficiency is just amazing...Pros: - Power consumption: I plugged my power strip into a wattage meter...The power saver switch is nice - I love the design and lay out of the cables"

    ""

    Hear more from customers

    Product Description

    Support your high-performance computer system with this EVGA SuperNova G3 power supply. Its hydraulic dynamic bearing fan operates quietly and provides outstanding longevity, and a fully modular design provides setup flexibility. This 80 Plus Gold-certified EVGA SuperNova G3 has an 850W power supply to handle maximum loads from multiple components efficiently.
  15. Thermaltake - ToughPower Grand RGB 1200W ATX12V 2.4/EPS12V 2.92 80 Plus Platinum Modular Power Supply - Black - Front_Zoom
    Top comment

    "I love the concept...I would purchase again...All n all good power source...Full Power and totally easy"

    ""

    Hear more from customers

    Product Description

    Handle intense computing with this 1200W Thermaltake Toughpower Grand power supply. Its 80 PLUS Platinum certification ensures solid, energy-efficient performance, and its fan with concentrated compression blades and anti-vibration mounting system provides optimal, low-noise cooling. The RGB LED ring of this fully modular Thermaltake Toughpower Grand power supply has five lighting modes for an enhanced aesthetic.
    Your price for this item is $219.99
    Top comment

    "I love the concept...I would purchase again...All n all good power source...Full Power and totally easy"

    ""

    Hear more from customers

    Product Description

    Handle intense computing with this 1200W Thermaltake Toughpower Grand power supply. Its 80 PLUS Platinum certification ensures solid, energy-efficient performance, and its fan with concentrated compression blades and anti-vibration mounting system provides optimal, low-noise cooling. The RGB LED ring of this fully modular Thermaltake Toughpower Grand power supply has five lighting modes for an enhanced aesthetic.