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283623-001 HP-Compaq 225 Watt Hot Swap Redundant Power Supply Fo
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  • $262.00 –
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IN WIN P85 (P Series) 850 Watt Fully Modular Power Supply 80+ Gold Certified, Black
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  • $461.00 –
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Power UPS Module Power Supply Module For Raspberry Pi Uninterruptible Capacity Thimble Charge Discharge 5V Output Power Module
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  • $117.47 –
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Switching Power Module 20W 2"x1" DC-DC Converter RSDW20F-05 RSDW20F-12 RDDW20F-15 RDDW20G-15(RDDW20G-15)
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  • $173.37 - $175.77
Switching Power Module 20W 2"x1" DC-DC Converter RSDW20F-05 RSDW20F-12 RDDW20F-15 RDDW20G-15(RDDW20G-15)
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  • $173.37 - $175.77
Switching Power Module 20W 2"x1" DC-DC Converter RSDW20F-05 RSDW20F-12 RDDW20F-15 RDDW20G-15(RDDW20F-15)
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  • $173.37 - $175.77
Switching Power Module 20W 2"x1" DC-DC Converter RSDW20F-05 RSDW20F-12 RDDW20F-15 RDDW20G-15(RDDW20F-15)
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  • $173.46 - $175.86
Switching Power Module 20W 2"x1" DC-DC Converter RSDW20F-05 RSDW20F-12 RDDW20F-15 RDDW20G-15(RDDW20G-15)
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  • $173.46 - $175.86
Switching Power Module 20W 2"x1" DC-DC Converter RSDW20F-05 RSDW20F-12 RDDW20F-15 RDDW20G-15(RDDW20F-15)
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  • $173.46 - $175.86
Replace Power? Supply 350W for HP MediaSmart Server X510 x310 LX195 DataVault
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  • $267.00 –
  • Free Shipping
Disassemble PSU for 10-pin TFX Power Supply FSP180-20TGBAA FSP180-20TGBAB MAX 180W
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  • $265.00 –
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for HK280-72PP PA-2181-2 PCG010 FSP180-20TGBAB 10-pin Power Supply
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  • $262.00 –
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Power Supply for Apple iMac 21.5" (Late 2009-2011) with Separator Card
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  • $252.00 –
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Replace Power? Supply for HP Pavilion Slimline s5360f s5703w Upgrade 300w
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  • $267.00 –
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Replace Power? Supply for HP Pavilion Slimline s5610y s5611f s5613w 400w
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  • $267.00 –
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Replace Power? Supply for HP Compaq Presario CQ4000KL Upgrade 275w 275 watt SFF
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  • $267.00 –
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Switching Power Module 30W DC-DC Single Output Converter SKM30B-12 SKM30C-12 SKM30F-15N DKM30F-12N DKM30F-15(SKM30F-15N)
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  • $180.92 - $183.32
Replace Power? Supply for HP Pavilion Slimline s5360f s5703w Upgrade 350w
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  • $267.00 –
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LRS-350-48 350.4W 48V 7.3 Amp Single Output Switchable Power
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LRS-350-48 350.4W 48V 7.3 Amp Single Output Switchable Power

Limited time offer, ends 11/08

  • Model #: BLC73X-626-ZM-28
  • $132.84 - $135.24
Replace Power? Supply for Dell Studio Slim 540s 537s 560s SFF 400w TFX
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  • $267.00 –
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for IdeaCentre B345 b520r2 b540p All-in-one Computer LCD Screen Power Supply
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  • $267.00 –
  • Free Shipping
Replace Power? Supply for AcBel pc 8046 PC8046 TFX SFF Upgrade 350w Watt
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  • $267.00 –
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Replace Power? Supply for Dell SFFCN-0YX301 CN-0XW605 SFF TFX Upgrade 320w
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  • $267.00 –
  • Free Shipping
Quiet 750 Watt 750W for Intel AMD PC ATX Power Supply Unit SATA PCI-E 6 Pin
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  • $283.00 –
  • Free Shipping
Fully Tested Power Supply 9XD51 RWMNY 5XV5K WYX72 HGRMH J1J77 180W For OptiPlex 3040 5040 7040 SFF
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  • $245.98 –
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for HK300-41GP MATX-2005 200W HK280-41GP SFX Small Chassis Power Supply
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  • $246.00 –
  • Free Shipping

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