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Bestec ATX-300-12E Rev. D1R 300W Gateway Power Supply P/N: 6506087R
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  • $58.50 –
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Mediasonic AC Power Supply for 4 Bay Hard Drive Enclosure Series HF2 / HF7 / HFR2 / HFR7
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  • $153.00 –
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5PCS/LOT 5V700mA (3.5W) isolated switch power supply module AC-DC buck step-down module 220V turn 5V
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  • $19.98 –
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  • $18.58 - $19.98
2800W Switching PC Power Supply 110V 220V Full Modular 2800W Power Supply Unit For Mining Rrig BitCoin Miner Ethereum ETH S9 S7
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  • $375.00 –
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  • $372.60 - $375.00
SilverStone Technology Platinum Certified Single +12V Rail ATX Power Supply, PS-ST65F-PT
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  • $505.12 –
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High Voltage Converter CA-155 LED Constant Current Board LED Current Source Power Supply Driver Light Adju ent 10-30V To 9.6V
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  • $19.98 –
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  • $18.58 - $19.98
XL6009 DC-DC Booster Module Power Supply Output Adjustable Super LM2577 Step-Up
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XL6009 DC-DC Booster Module Power Supply Output Adjustable Super LM2577 Step-Up

Limited time offer, ends 11/09

  • Model #: .jiudian-YC5KU-1153
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  • $19.98 –
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  • $18.58 - $19.98
Boost Buck DC-DC Adjustable Step Up Down Converter XL6009 Power Supply Module 20W 5-32V to 1.2-35V(Red)
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  • $25.52 –
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  • $24.12 - $25.52
5PCS Adjustment Step Down Power Supply Module 24V 12V to 5V 5A 5A Output Small Size for Electronic Projects
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  • $29.42 –
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  • $28.02 - $29.42
PicoPSU-80 + 60W Adapter ATX/Mini-ATX Silent PC Complete Power Kit Cyncronix Rating
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  • $108.89 –
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Switching Power Module 20W 2"x1" DC-DC Converter MDS20A-05 MDS20B-05 12(MDS20A-05)
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Switching Power Module 20W 2"x1" DC-DC Converter MDS20A-05 MDS20B-05 12(MDS20A-05)

Limited time offer, ends 11/08

  • Model #: BLC73X-623-ZM-147
  • $237.98 - $240.38
Switching Power Module 20W 2"x1" DC-DC Converter MDS20A-05 MDS20B-05 12(MDS20B-12)
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Switching Power Module 20W 2"x1" DC-DC Converter MDS20A-05 MDS20B-05 12(MDS20B-12)

Limited time offer, ends 11/08

  • Model #: BLC73X-623-ZM-401
  • $237.98 - $240.38
4X PCI-E 6PIN Input DC 12V 300W DC-ATX-300W 24Pin PICO ATX Switch PSU Power Supply Module
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  • $114.85 –
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  • $113.45 - $114.85
1800W 2000W Modular Mining Power Supply PSU For 6 GPU ETH Rig Ethereum Miners
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  • $499.00 –
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Switching Power Module 20W 2"x1" DC-DC Converter MDS20A-05 MDS20B-05 12(MDS20A-12)
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Switching Power Module 20W 2"x1" DC-DC Converter MDS20A-05 MDS20B-05 12(MDS20A-12)

Limited time offer, ends 11/08

  • Model #: BLC73X-623-ZM-146
  • $237.98 - $240.38
Switching Power Module 20W 2"x1" DC-DC Converter MDS20A-05 MDS20B-05 12(MDS20A-12)
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Switching Power Module 20W 2"x1" DC-DC Converter MDS20A-05 MDS20B-05 12(MDS20A-12)

Limited time offer, ends 11/08

  • Model #: BLC73X-623-ZM-403
  • $237.98 - $240.38

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