Power Supplies - Showing 1993 - 2016 of 17940 Products
Refurbished: For Juniper EX4300 Power Supply JPSU-350-AC-AFI 350W
- Model #: 722954727382
- Item #: 9SIVB8UKAA7387
- Return Policy: Magicpower Return Policy
Refurbished: ML150 DL120 DL180 550W Power Supply HSTNS-PL53 765423-201 ...
- Model #: 753525946796
- Item #: 9SIVB8UKA99762
- Return Policy: Magicpower Return Policy
Refurbished: For CA05951-9105 BTU E4000 DX410 DX440
- Model #: 726727777055
- Item #: 9SIVRWKKXB0082
- Return Policy: Nytke team Return Policy
Refurbished: For Power-one Power CPCI Module ZT6303 AC, CPA 250-4530S181 4530S195
- Model #: 722954731310
- Item #: 9SIVB8UKAA5708
- Return Policy: Magicpower Return Policy
Refurbished: PWR-3900-DC 341-0240-01 DC Power Supply for 3945/K9 3925 Routers
- Model #: 753525934267
- Item #: 9SIVB8UKA99204
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO CU-08D H CU-08D B
- Model #: 759950245633
- Item #: 9SIVB8UKDA9336
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS for C220 M3B Power Supply 341-0490-02 PS - 2651-1 - LF ...
- Model #: 792597709663
- Item #: 9SIVRWKKXD4111
- Return Policy: Nytke team Return Policy
Refurbished: For 124T ENP-2316BR
- Model #: 726727776355
- Item #: 9SIVRWKKXB0090
- Return Policy: Nytke team Return Policy
Refurbished: PBA1500F-48 Original Disassembly Miniaturized High Power Thin Power ...
- Model #: 753525957068
- Item #: 9SIVB8UKAA8921
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS for GW-ERP2U1200 (90 +) 2U power supply 1200W
- Model #: 792597725014
- Item #: 9SIVRWKKXD9230
- Return Policy: Nytke team Return Policy
Refurbished: 1PCS for PS-2551-9L Server Power Supply NF5280M5 SA5212M5 AC Module ...
- Model #: 792597723997
- Item #: 9SIVRWKKXD8792
- Return Policy: Nytke team Return Policy
Refurbished: 1PCS for P8 P9 Power Supply 300W SPI-300G SD-250AT
- Model #: 792597715589
- Item #: 9SIVRWKKXD6224
- Return Policy: Nytke team Return Policy
Refurbished: For 3Y YGEA0758AM 6R01S10 Industrial Control 757.6W Medical Power Supply
- Model #: 722954722912
- Item #: 9SIVB8UKAA6933
- Return Policy: Magicpower Return Policy
Refurbished: For NDR-240-24 220 To 24V Guide Rail 10A Switch Power Supply 240W Industrial ...
- Model #: 722954732591
- Item #: 9SIVB8UKAA5873
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO Power Supply For FSP 420W For FSP420-20RDB
- Model #: 759950248672
- Item #: 9SIVB8UKDF9541
- Return Policy: Magicpower Return Policy
Refurbished: For FSP350-601U Standard 1U Server Industrial Control Power Supply ...
- Model #: 722954732546
- Item #: 9SIVB8UKAA5853
- Return Policy: Magicpower Return Policy
Refurbished: POWER SUPPLY For MEC048-H42C0 MEC048-H42C0-A0 Tested Fast
- Model #: 753525991253
- Item #: 9SIVSY0KUT4503
- Return Policy: LiAnMengYuShangDian Return Policy
Refurbished: 1Pcs for AC-PSR650-A-H3 H3C PSR650-A AC Power Module 650W
- Model #: 792597727773
- Item #: 9SIVTFFKXZ7516
- Return Policy: Zienroylein Return Policy
Refurbished: KHACHIMO R320 R420 550W Switching Power Supply 00G8CN 0G8CN
- Model #: 744623314419
- Item #: 9SIVB8UKD21848
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS for S9505/S9508E-V Power Supply AD182M48-1M2
- Model #: 792597708246
- Item #: 9SIVRWKKXD3727
- Return Policy: Nytke team Return Policy
Refurbished: KHACHIMO Power Supply For 5V4A 25W Power Supply SYA-25-S05
- Model #: 759950243493
- Item #: 9SIVB8UKDA9040
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO 6600 8600 920 330 320 10Pin 500W Power Supply ...
- Model #: 744623311326
- Item #: 9SIVB8UKD12146
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS for ATX-0135G 350W Desktop Computer 500W ATX Power Supply
- Model #: 792597716869
- Item #: 9SIVRWKKXD6694
- Return Policy: Nytke team Return Policy
Refurbished: KHACHIMO IPC 80plus Bronze Small 1U 350W Switching Power Supply ...
- Model #: 744623313191
- Item #: 9SIVB8UKD21714
- Return Policy: Magicpower Return Policy
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.
