Power Supplies - Showing 1993 - 2016 of 17940 Products
Refurbished: KHACHIMO RX300S5 RX300S6 800W Switching Power Supply DPS-800GB-3 A ...
- Model #: 744623307640
- Item #: 9SIVB8UKD06422
- Return Policy: Magicpower Return Policy
Refurbished: 1pcs for FSP180-ABBN2 FSP180-ABAN2 FSP135-ABAN2 FSP135-ABBN2-M ...
- Model #: 716837087731
- Item #: 9SIVB8UKX59597
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO 24V 150W Power Supply ACS150B-24 ACS150B
- Model #: 759950243004
- Item #: 9SIVB8UKDA8956
- Return Policy: Magicpower Return Policy
Refurbished: 12V 40W MK40S-12 ASM-0100 EFM-1505
- Model #: 753525992335
- Item #: 9SIVB8UKAA8244
- Return Policy: Magicpower Return Policy
Refurbished: For Power Supply For SUN 300-2143 Fire X4170 760W 7001497-J000
- Model #: 753525986440
- Item #: 9SIVB8UKAA8603
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO V440 680W Switching Power Supply DPS-680CB A 300-1851 ...
- Model #: 744623304328
- Item #: 9SIVB8UKCW6196
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO Small 1U CPU8Pin*2 500W Power Supply DPS-500AB-5 B ...
- Model #: 744623312958
- Item #: 9SIVB8UKD19603
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO 410 530 540 560 580 620 350W Power Supply CPB09-001B ...
- Model #: 744623299891
- Item #: 9SIVB8UKCU6652
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS for ATX450-50HUA FLX450-50HUA industrial control
- Model #: 792597707416
- Item #: 9SIVRWKKXD3564
- Return Policy: Nytke team Return Policy
Refurbished: 1Pcs for contactor GXNC23CA-0 24VDC
- Model #: 792597720200
- Item #: 9SIVRWKKXD7806
- Return Policy: Nytke team Return Policy
Refurbished: KHACHIMO ATX 300W Switching Power Supply ACE-A130-R11 ...
- Model #: 744623314242
- Item #: 9SIVB8UKD21827
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO R8R7 850W Power Supply D850EF-00 D850EF-01 NJVDN ...
- Model #: 744623307244
- Item #: 9SIVB8UKD06365
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS for GW-CRPS550/N/N2 550W server power supply
- Model #: 792597716845
- Item #: 9SIVRWKKXD6714
- Return Policy: Nytke team Return Policy
Refurbished: FSP300-20GSV 24 Pin For FSP Group FSP300-20GSV 300W VCR Power Supply
- Model #: 753525948271
- Item #: 9SIVB8UKA99960
- Return Policy: Magicpower Return Policy
Refurbished: ACE650F 650W AC6-FFFFC-00 Power Supply
- Model #: 724780183271
- Item #: 9SIVB8UKA98956
- Return Policy: Magicpower Return Policy
Refurbished: 500W Switching Power Supply R48-500A
- Model #: 753525941159
- Item #: 9SIVB8UKAA4937
- Return Policy: Magicpower Return Policy
Refurbished: BESTEC 300W Power Supply ATX0300F5WB ATX0250F5WA ATX-250-12Z ...
- Model #: 753525936087
- Item #: 9SIVB8UKA99425
- Return Policy: Magicpower Return Policy
Refurbished: For PFC Power Supply JPS200P(4.5V) 4.5V 40A 200W
- Model #: 753525988383
- Item #: 9SIVB8UKAA8304
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS for DPS-800NB D S26113-E574-V52 Server Power Supply 800W
- Model #: 731029999975
- Item #: 9SIVRWKKXD1329
- Return Policy: Nytke team Return Policy
Refurbished: 1PCS for ePCSA-650P ePCSA-650P-E2S industrial control, equipment ...
- Model #: 792597711208
- Item #: 9SIVRWKKXD4546
- Return Policy: Nytke team Return Policy
Refurbished: MMC100-1 For COSEL Original Disassembly Switching Power Supply 5V+-12V ...
- Model #: 753525957204
- Item #: 9SIVB8UKAA8971
- Return Policy: Magicpower Return Policy
Refurbished: 1Pcs for DPS-300AB-70A 300W with -5V server 4U industrial power supply
- Model #: 716837088943
- Item #: 9SIVB8UKX60132
- Return Policy: Magicpower Return Policy
Refurbished: 1Pcs for 750w power supply GW-BNF750w
- Model #: 792597985159
- Item #: 9SIVB8UKX57240
- Return Policy: Magicpower Return Policy
Refurbished: SPIII-2003-PB Computer Host Desktop Power Supply 200W
- Model #: 722954727146
- Item #: 9SIVSY0KUR7858
- Return Policy: LiAnMengYuShangDian 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.
