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For Industrial Power Supply UMEC UM400D01-01 36-75V
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  • $237.00 –
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MINI PSU FLEX Computer Power supply 1U 200W Small Desktop Computer Cash Register Power NAS Low-Power Equipment Silent Fan AC220V
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  • $79.43 - $81.83
400W Desktop computer Power Supply 400W TFX Power MAX 500W Power Supply PC TFX SFF Upgrade 500W 110V 220V TFX12V 2.31
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  • $206.66 - $209.06
TekPower TP1863 12 Amp DC 13.8V Regulated Power Supply with Fuse Protection
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  • $287.00 –
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GRAPE 6PIN PSU Power Cable 8FNXH, Replacement Power Cord Compatible with Lingyue 5675 Desktop 850W Power Supply
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90W DC-ATX 12V 20Pin Power Module, DC Input ATX Power Supply for Mini PC, HTPC & POS Terminals
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90W DC-ATX 12V 20Pin Power Module, DC Input ATX Power Supply for Mini PC, HTPC & POS Terminals

Limited time offer, ends 11/08

  • Model #: C745-LUOYIMAN-Lsy817-902
DC655V WZ5005 DC Regulated Power Supply, Variable Switching Digital Bench Power Supply Adjustable Digital Control LCD Screen
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  • $146.78 –
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300W PSU Industrial Computer Power Supply FSP300-60ATV (PF) Power Supply Compatible With FSP300-60PFN FSP250-60PFN
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  • $160.26 - $162.66
DC-ATX-160W high power 24pin DC ATX PSU 12V DC Input 160W Peak Output Switch DC-DC ATX Pico PSU MINI ITX PC Power Supply
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  • $30.30 –
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  • $28.90 - $30.30
HAOX PC Power Supply, Strong Power Supply with Fan for Computer for PC(British Flag Type)
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  • $250.00 –
  • Free Shipping
12V DC 250W Pico PSU DC-DC ATX Power Module, 24Pin ATX Switch Power Supply for Mini ITX PC & Car Automative Computer
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  • $77.83 –
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450 Watt 450W ATX Power Supply SATA Single 120mm Fans Silent for Intel AMD Unit
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  • $140.41 - $142.81
Ender-3 Pro POWER SUPPLY 350W 24V 14.6A Meanwell Power Supply For Creality 3D Printer Ender-3 Pro 3D Printer parts
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  • $169.53 –
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  • $167.13 - $169.53

Power Supply

The PSU (a.k.a. power supply unit) is virtually the heart of the computer. It is a vitally important part that delivers power to components that comprise the computer system. A high-quality power supply can make the difference between a perfect machine and an unreliable one. Getting to know the importance of the power supply is just the first step, and getting the right PSU for your system means looking beyond just enormous power output.

You need to consider the physical size of the power supply, and whether or not it fits your case's form factor. How many "rails" does it have, and how many peripherals it can connect with. Look at placement of your cables and whether they'll fit into your case, and if you can run them to all the places your PSU must connect. Properly chosen, your power supply will last you a long time!

Bestselling Power Supplies Reviews:

Anonymous
10/13/2026 7:46:02 AM
Great PSU!

“ This is an excellent power supply and the cables feel and look nice too. ”

SeaSonic FOCUS GX ATX 3 (2024) GX-1000 1000 W ATX 3.1 80 PLUS GOLD Certified Full Modular Power Supplies
Mario g.
10/6/2026 11:13:39 AM
Great product

“ Bang for buck PSU for my sons first gaming pc ”

ASRock PRO Series PRO-750G 750 W ATX 3.1 Compatible 80 PLUS GOLD Certified Power Supply
Anonymous
9/25/2026 11:30:00 AM
Great product, reasonable cost, prompt shipping.

“ The ASRock PRO 850W Gold was purchased at a reasonable cost, shipped timely, and fits easily into my mid-ATX tower. ”

ASRock PRO Series PRO-850G 850 W ATX 3.1 Compatible 80 PLUS GOLD Certified Power Supply
Anonymous
9/22/2026 11:54:52 AM
Was easy to install, just look out for 8 pin cable!

“ Works great and fits well in my older PC! ”

CORSAIR RM850e (2025) Fully Modular Low-Noise ATX Power Supply - ATX 3.1 & PCIe 5.1 Compliant - 105°C-Rated Capacitors - Cybenetics Gold Efficiency