Power Supplies - Showing 1993 - 2016 of 17942 Products
Refurbished: 5V2.5A 12V0.3A -5V0.5A Power Supply GZM-H20T5+12R-5R
- Model #: 703454716298
- Item #: 9SIVB8UKAJ6014
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO Slim S01 240W Power Supply D21-240P1A M76039-002
- Model #: 745635674812
- Item #: 9SIVB8UKDA0220
- Return Policy: Magicpower Return Policy
Refurbished: ML350G4P Server Power PS-3701-1C 406413-001 382175-501
- Model #: 722954734489
- Item #: 9SIVB8UKAA6083
- Return Policy: Magicpower Return Policy
Refurbished: For GPAD201M4.2-1E 4.2V40A Power Module
- Model #: 752804576655
- Item #: 9SIVRWKKXB2119
- Return Policy: Nytke team Return Policy
Refurbished: Power Supply S8FS-G60012CD For 600W 12V AC100240V S8JX-G60012CD
- Model #: 753525992236
- Item #: 9SIVB8UKAA8204
- Return Policy: Magicpower Return Policy
Refurbished: LDC15F-2 Original Disassembly Switching Power Supply 5V/3A
- Model #: 753525956382
- Item #: 9SIVB8UKAA8843
- Return Policy: Magicpower Return Policy
Refurbished: Power Supply 341-0401-03 3000W PWR-3KW-AC-V2
- Model #: 724780778293
- Item #: 9SIVSY0KUT7095
- Return Policy: LiAnMengYuShangDian Return Policy
Refurbished: M830B Communication Power Monitoring Module
- Model #: 753525956634
- Item #: 9SIVT8HKWF3064
- Return Policy: YunYunKeJiShiZhuangDian Return Policy
Refurbished: 1pcs for DPS-300AB-102 300W power supply
- Model #: 792597712564
- Item #: 9SIVRWKKXD4744
- Return Policy: Nytke team Return Policy
Refurbished: 1pcs for R525G3 Server 1+1 DPS-770CB B 770W Power Supply
- Model #: 792597722808
- Item #: 9SIVRWKKXD8617
- Return Policy: Nytke team Return Policy
Refurbished: 1Pcs for G1136-0550WNA G1116-2000WNC G1116-1200WNB server power ...
- Model #: 716837085812
- Item #: 9SIVB8UKX58664
- Return Policy: Magicpower Return Policy
Refurbished: For S-250-24 square power supply 24V10A switch power supply
- Model #: 703454722640
- Item #: 9SIVB8UKAJ6729
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO 8852 2880W Switching Power Supply 39Y7364 39Y7349 39Y7409 ...
- Model #: 744623305516
- Item #: 9SIVB8UKD01909
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO PMT 24V1.5A 35W Switcing Power Supply PMT-24V35W2BA
- Model #: 745635675246
- Item #: 9SIVB8UKDA0311
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO FLEX NAS LOLI Small 1U D01S3 M4X D36 K39 K49 T39 R47 500W ...
- Model #: 744623306513
- Item #: 9SIVB8UKD06264
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO T640 Power Supply 0D2DTT D2DTT Work Like New
- Model #: 759950245022
- Item #: 9SIVB8UKDA9236
- Return Policy: Magicpower Return Policy
Refurbished: 1Pcs for ST-352UAG-05E ATX-1260GA1 ATX-250-12Z ACE-920A ACE-935AL ...
- Model #: 716837086710
- Item #: 9SIVB8UKX59186
- Return Policy: Magicpower Return Policy
Refurbished: For 250W PSU power 1U power supply DPS-250AB-44 B
- Model #: 726727733822
- Item #: 9SIVRWKKXA3853
- Return Policy: Nytke team Return Policy
Refurbished: S25060-X60-B73 72-110V Industrial Computer Power Supply
- Model #: 753525948400
- Item #: 9SIVB8UKA99966
- Return Policy: Magicpower Return Policy
Refurbished: HD4830-3 48V 30A Rectifier Module,
- Model #: 753525958164
- Item #: 9SIVSY0KUT4510
- Return Policy: LiAnMengYuShangDian Return Policy
Refurbished: 1pcs for PSG-2B07V 1100W Server Disk Array Cabinet Equipment Power Supply
- Model #: 792597985623
- Item #: 9SIVB8UKX57380
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO 530 5050 14Pin 280W Power Supply HK380-16FP HK280-23FP ...
- Model #: 744623317021
- Item #: 9SIVB8UKD64500
- Return Policy: Magicpower Return Policy
Refurbished: 1Pcs for GW-EPS650P GW-EPS550P server power supply
- Model #: 716837090410
- Item #: 9SIVB8UKX60629
- Return Policy: Magicpower Return Policy
Refurbished: Z200 210 680 880 6000 8000 320W Power Supply D12-320P1B PS-4321-9HA ...
- Model #: 753525935530
- Item #: 9SIVB8UKA99359
- 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.
