400w Power Supply
The power supply is a crucial component of any computer. It's the part that converts AC current from the wall outlet into DC current that your computer's components can use. It also has to be able to handle the load from all of those components, especially if you're overclocking, which means you'll want a power supply with a high-quality fan and top-notch electrical components. We're confident our top picks are the best you can buy for your own system.
Read More-
Cobra - PURE SINE 400 Watt Power Inverter with Fast Charge USB - Black
SKU: J7XH3ZFX5QSee all Automotive Power InvertersProduct Description
A black power inverter delivering 400 watts of pure sine wave power with fast-charge USB for sensitive electronics.$130.00 Your price for this item is $130.00 -
Rosewill - micro atx mini tower pc case with pre-installed 400w power supply | lef - Black
SKU: J39K6Y5ZXSSee all Computer CasesProduct Description
A black steel and tempered-glass PC case with pre-installed 400W power supply and USB 3.0 connectivity.$69.99 Your price for this item is $69.99 -
Boss - Elite BE400.1D 400W RMS Mono Class D Amplifier with Remote Subwoofer Level Control and LED Illuminated End Panels - Black/Gray
SKU: J3XHF9XRF3See all Car Mono Subwoofer AmplifiersProduct Description
A powerful black and gray Class D mono amplifier with remote subwoofer control, bass boost, and LED panels.$189.99 Your price for this item is $189.99 -
Rosewill - micro atx mini pc computer case with pre-installed 400w power supply | - Black
SKU: J39K6Y5ZXXSee all Computer CasesProduct Description
A black steel-and-tempered-glass micro ATX case with a pre-installed 400W power supply and USB 3.0 ports.$79.99 Your price for this item is $79.99 -
Sonance - 8-50 AMP - 400W 8.0 Ch. Multi-Channel Amplifier for Home Audio & Multi Room Systems (Each) - Black
SKU: J78WL7S4TTSee all Power AmplifiersProduct Description
A black multi-channel amplifier delivering 400W of high-fidelity sound for seamless whole-home audio integration.$1,485.00 Your price for this item is $1,485.00 -
Thermaltake - Smart W3 500W 80Plus Certified ATX v3.1 Spec Power Supply - Black
SKU: J39ZPC6J2RSee all Power SuppliesProduct Description
A reliable black ATX 500W non-modular power supply with 80 PLUS efficiency and PCIe 4.0 support.$49.99 Your price for this item is $49.99
Best Sellers
Related Pages
FAQ
A 400W power supply is suitable for entry-level to mid-range desktop computers, small form-factor PCs, and basic workstations. It can support components like integrated graphics or low-power dedicated GPUs, as well as standard hard drives and SSDs.
Many 400W power supplies come in both modular and non-modular options. Modular power supplies allow you to connect only the cables you need, helping with cable management and airflow inside your PC case.
Yes, most 400W power supplies include the latest ATX connectors, such as 24-pin main power and 8-pin CPU power connectors, making them compatible with current-generation motherboards.
A 400W power supply is an excellent choice for a home theater PC, as these systems typically require less power and benefit from the efficiency and quiet operation of lower-wattage PSUs.
Look for certifications like 80 PLUS Bronze, Silver, or Gold, which indicate higher energy efficiency and reliable performance. These certifications ensure that the power supply meets specific efficiency standards under typical loads.
-
automotive
-
home amplifiers & preamps
-
home audio
-
home audio & speakers
-
power amplifiers
-
receivers & amplifiers
-
automotive power inverters
-
car 2-channel amps
-
car amplifiers
-
car audio
-
computer cards & components
-
computer cases
-
computers & tablets
-
generators & renewable power
-
multi-channel car amplifiers
-
outdoor living
-
solar panels