Power Supplies - Showing 2209 - 2232 of 17942 Products

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Refurbished: 1pcs for S822LC mini power supply 1300w 01AF314 01AF370 ...
$150 .00
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Refurbished: KHACHIMO 400W Switching Power Supply GPS-400AB B
$199 .00
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Refurbished: KHACHIMO AIO 130W Switching Power Supply GW-D19-130
$159 .00
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Refurbished: KHACHIMO DC48V 250W Switching Power Supply ACE-828T
$599 .00
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Refurbished: For power supply PCE019 DPS-180AB-20 A 793073-001 797009-001 ...
$118 .00
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Refurbished: PS-2551-9L 550W Original For Inspur Server Power Supply ...
$268 .20
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$268 .20
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Refurbished: For Z200 Graphics Workstation Power Supply DPS-320KB-1 A 502629-001 ...
$101 .00
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Refurbished: 1PCS for S5800T S5600T HSP480-S12A 0213G006 Power Module
$103 .00
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Refurbished: KHACHIMO 80plus Gold TFX 300W Switching Power Supply SSP-300TGS
$249 .00
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Refurbished: 1Pcs for MD3260 MD3660F MD3060E TDPS-1760AB B Power Supply 0D7RNC
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Refurbished: KHACHIMO Power Supply For NEMIC-LAMBDA 12V 0.6A 15W For LWD15-1212 ...
$399 .00
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Refurbished: 1pcs for M770 medical power supply S26113-E595-V50-01 DPS--450AB-15 A
$283 .00
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Refurbished: KHACHIMO PMT 12V4.2A 50W Power Supply PMT-12V50W1AA
$59 .00
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Refurbished: 1Pcs for EVR200CI-2 Electric Vehicle Contactor 200A-12VDC Relay
$68 .00
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Refurbished: NF5460M4 Delta DPS-1200AB-4D Redundant Server Power Module 1200W
$269 .00
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Refurbished: KHACHIMO 4600 6600 6900 8600 4900 10Pin 250W Power Supply HK350-12PP ...
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Refurbished: Power Supply for AA25370L-100 A3C40094162 BX900S2 2235W Work Good
$249 .00
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Refurbished: 1Pcs for server power supply YH-5451U YM-2451Q 450W redundant power ...
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Refurbished: KHACHIMO PF248-20SSV0101 248W Industrial Power Supply
$599 .00
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Refurbished: D10-240P1A PC9058 CFH0240WWA 4300 8100 SFF Small Chassis Power ...
$169 .00
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Refurbished: For M1Z-5500V Firewall Industrial Computer 2U Server Power Module 500W
$249 .00
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Refurbished: For 700-014188-0000 SP50L09191 750W Switching Power Supply
$176 .00
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Refurbished: 1Pcs for RD540 Delta DPS-800AB-21 A Server Redundant Power Supply 800W
$147 .00
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Refurbished: 1Pcs for AMU02C Communication Power Monitoring Module EN3MAMU02C101
$103 .00
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$103 .00
Sold by: Nytke team

Tips for Buying a Computer Power Supply Unit (PSU)

Introduction

A computer power supply is one of the most crucial components in a computer, as it is responsible for providing stable and regulated power for the system. If you are shopping for a computer power supply, finding the ideal one will require you to consider several important criteria. Those criteria include the size and form factor of the case, the wattage requirement of the system, efficiency, and your internal cabling preference.

Size Standards

Computer power supplies are available in a variety of different sizes and form factors. It is crucial that the power supply unit (PSU) you select matches the size requirements of your case and motherboard. If you have a Mini ITX case for example, you cannot utilize a standard ATX power supply. For more information about power supply form factors, see below.

  • ATX
    The standard power supply size that will fit most mid-size and full-size tower cases. Some micro ATX cases can utilize ATX power supplies as well.
  • Mini ITX
    Mini ITX power supplies are designed specifically for mini ITX systems but may also fit other small form factor computer cases.
  • SFX
    SFX computer power supplies are smaller than standard ATX PSUs and are meant for micro ATX and other small form factor computer cases.
  • TFX
    Another small form factor computer power supply that is thinner to fit micro ATX, Mini ITX, and other smaller systems.
Wattage

A computer power supply’s wattage rating is a measurement of how much power it can provide to the hardware. When shopping for a power supply, you need to consider how much power your computer system requires. To calculate your system’s power requirement, add up the power draw for all the components.

Start with the motherboard and processor, and then include graphics cards, system memory, storage devices, and other expansion cards. For an even better estimate, you should include USB devices, internal fans, and other accessories. Once you have your estimate, try to find a computer power supply that is capable of at least that. For a larger safety margin, you should get a PSU that is well above that minimum.

Cable Management

There are two cable management options for computer power supplies, modular and non-modular. Modular cabling allows you to connect and disconnect internal power cables from the power supply itself, so you can avoid having unused cables and connectors dangling inside the case. Computer power supplies that feature modular cabling typically cost more than those without it.

Efficiency

The efficiency of a computer power supply is a ratio of how much power it provides and how much power it draws. For instance, a power supply that provides 200 watts of power but pulls 400 watts from a power outlet has a 200/400 or 50% efficiency ratio. The more efficient your computer power supply is, the less it will cost you to operate.

One metric you can use to gauge efficiency is what level of 80 PLUS® certification a power supply has, if it any. The different levels of 80 PLUS certification include 80 PLUS, 80 PLUS Bronze, 80 PLUS Silver, 80 PLUS Gold, 80 PLUS Platinum, and 80 PLUS Platinum. The most basic certification is 80 PLUS, which indicates an efficiency rating of at least 80%. The other certifications rank from Bronze to Titanium, with the latter being the highest attainable. If computer power supply efficiency is a big concern for you, try to find one with a high level of 80 PLUS certification.