Power Supplies - Showing 1921 - 1944 of 17943 Products

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Refurbished: 1PCS for YH-8451B YH-8451B-XBER cage YM-2451C YM-2451CAR/A01R ...
$250 .00
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Refurbished: Power Supply 341-0533-02 PWR-C1-1025WAC
$329 .00
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Refurbished: 1pcs for S5700 Series PAC-600WA-F 600W Switch Server Power Supply
$118 .00
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Refurbished: 1Pcs for FSP250-60MPC 250w small 1U power supply Flex ITX power supply
$119 .00
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Refurbished: KHACHIMO Rated 180W Peak 230W Power Supply GW-TFX180
$89 .00
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Refurbished: For AP-400X FSP350-60GHC FSP300-60BTV (PF) APS-400S Power Supply
$250 .00
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Refurbished: KHACHIMO 3020 9020 T1700 T3620 8Pin Power Supply 460W H290AM-00 ...
$139 .00
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Refurbished: KHACHIMO MATX 250W Power Supply HK350-42SP HK350-41SP hk320-42sp ...
$79 .00
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Refurbished: KHACHIMO 48V 0.65A 30W Power Supply PBA30F-48-N PBA30F-48 PBA30F
$769 .00
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Refurbished: ETP48400-C4A1 Switching Power Supply Embedded System 48V400A
$1,259 .00
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$1,259 .00
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Refurbished: KHACHIMO Power Module For ABB Power Supply PM564-R-AC ...
$539 .00
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Refurbished: DPS-300AB-70A Advantech Industrial Control Computer 300W -5V Server 4U ...
$89 .00
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Refurbished: 650W 1U Server Power Supply TDPS-650SB A 24+4+4+8+10
$209 .00
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Refurbished: KHACHIMO 1U I610r-FQ 500W Switching Power Supply H1H-6507P
$298 .00
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Refurbished: For 6 + 4 240w computer power supply AC240AM-01 4YXMF 3050 60 70 80 90 ...
$84 .00
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Refurbished: For RD350 RD450 550W Server Power Supply 00HV224 DPS-550AB-5 A
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Refurbished: X3750 M4 1400W Power Supply DPS-1400BB A 69Y5948 69Y5949 69Y5912 ...
$229 .00
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Refurbished: KHACHIMO RS6000 DS8100 288W Power Supply 3D51-25-2 00FW761 ...
$399 .00
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Refurbished: KHACHIMO 60V 600W For SMC600PS60-D SMC600PS60
$2,999 .00
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$2,999 .00
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Refurbished: For DB86F808R Power Module 1905842V 09020166 021013 AC OV
$169 .00
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Refurbished: HP Proliant Gen9 Servers Power Supply 550W DL180 DL160 DL120 DL80 DL60 ...
$35 .99
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$35 .99
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Refurbished: 1PCS for C2100 server, power cage, power distribution port board, power ...
$73 .00
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Refurbished: DS4300 348-0049091 348-0050018 AA21660 400W
$109 .00
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Refurbished: For 6140 6180 array power supply DPS-600QB A 300-2055
$250 .00
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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.