Power Supplies - Showing 1993 - 2016 of 17947 Products
Refurbished: KHACHIMO For FSP 80plus Bronze -5V 1U 350W Switching Power Supply ...
- Model #: 744623305233
- Item #: 9SIVB8UKD01845
- Return Policy: Magicpower Return Policy
Refurbished: BTX-3031 300w Large Fan ATX Chassis Board Power Supply
- Model #: 722954721946
- Item #: 9SIVB8UKAA6849
- Return Policy: Magicpower Return Policy
Refurbished: FSP FSP650-80GLC 650W
- Model #: 753525956597
- Item #: 9SIVB8UKAA8883
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO LED Power Supply For MOSO 228-457V 320W Power Supply ...
- Model #: 759950244193
- Item #: 9SIVB8UKDA9115
- Return Policy: Magicpower Return Policy
Refurbished: 1Pcs for TS440 TS540 Server 450W Power Supply FSA028 03X4373
- Model #: 716837082828
- Item #: 9SIVB8UKX57485
- Return Policy: Magicpower Return Policy
Refurbished: Power Supply Module For R48-1800U0 R48-1800UO R48-1800
- Model #: 753525988857
- Item #: 9SIVB8UKAA7673
- Return Policy: Magicpower Return Policy
Refurbished: 1Pcs for R4850G1 Communication Power Supply 48V50A 3000W
- Model #: 716837093930
- Item #: 9SIVB8UKX61947
- Return Policy: Magicpower Return Policy
Refurbished: C48/280-1000 Communication Power Supply 1000W
- Model #: 724780183110
- Item #: 9SIVB8UKA98987
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO 1U 400W Switching Power Supply ST-400UAG-05F
- Model #: 744623306759
- Item #: 9SIVB8UKD06267
- Return Policy: Magicpower Return Policy
Refurbished: 1Pcs for P1S-2300V-R Redundant Power Supply Module P1S2-5300V4V 300W
- Model #: 792597986057
- Item #: 9SIVB8UKX57409
- Return Policy: Magicpower Return Policy
Refurbished: For 3Y YM-2851V YH5851-XVAR 850W Server Power Supply YM-2851F
- Model #: 722954723018
- Item #: 9SIVB8UKAA6925
- Return Policy: Magicpower Return Policy
Refurbished: 7001374-Y0002 39Y7367 39Y7381 8886 Server Power Supply 1450W
- Model #: 722954726866
- Item #: 9SIVB8UKAA7375
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS for Power supply U1A-H10060-DRB R1A-HH0060 cage
- Model #: 792597711727
- Item #: 9SIVRWKKXD4648
- Return Policy: Nytke team Return Policy
Refurbished: Power Supply For DPR48/50C ESR-48/56CN ESR-48/56C N
- Model #: 753525989670
- Item #: 9SIVB8UKAA7751
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS PWR-C1-350WAC For Switch Power Supply 3850 341-0562-01 AA26270
- Model #: 753525934137
- Item #: 9SIVB8UKA99200
- Return Policy: Magicpower Return Policy
Refurbished: S5735-S48S4X S5731 Switch 150W Power Module PAC150S12-R
- Model #: 722954721496
- Item #: 9SIVB8UKAA6770
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS for monitoring AD-0803600230NA 36V2.23A power adapter
- Model #: 792597723904
- Item #: 9SIVRWKKXD8943
- Return Policy: Nytke team Return Policy
Refurbished: 1PCS for 45D5320 45D5321 41U7981 41U7982 41U7969 50A2 5802PCI
- Model #: 726099252365
- Item #: 9SIVRWKKXD1814
- Return Policy: Nytke team Return Policy
Refurbished: A5E02083152 11-05-500092-1 Original IPC Power Supply
- Model #: 724780779009
- Item #: 9SIVB8UKAA6687
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO 2700W Power Supply RG-PA2700I
- Model #: 759950247125
- Item #: 9SIVB8UKDF9371
- Return Policy: Magicpower Return Policy
Refurbished: 550W Switching Power Supply 06FKHH 6FKHH DPS-550LB N
- Model #: 753525941517
- Item #: 9SIVB8UKAA5027
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO POWEREX SPC-S350 REX-S350 Industrial Control Power Supply
- Model #: 745635673440
- Item #: 9SIVB8UKD64727
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO DS4700 600W Switching Power Supply DPS-600QB A 42D3346 ...
- Model #: 744623317779
- Item #: 9SIVB8UKD64750
- Return Policy: Magicpower Return Policy
Refurbished: For SD-235PSU SD-250PSU POS machine FlEX small 1U power supply
- Model #: 726727732375
- Item #: 9SIVRWKKXA3512
- Return Policy: Nytke team 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.
