Power Supplies - Showing 1945 - 1968 of 17979 Products
Refurbished: For H3C PSR450-12A S6520X/S6800 Switch 450w AC Power Supply
- Model #: 722954732003
- Item #: 9SIVSY0KUT7037
- Return Policy: LiAnMengYuShangDian Return Policy
Refurbished: KHACHIMO X3550M4 M5 X3650M4 M5 1300W Power Supply 700-013496-J200 ...
- Model #: 744623310152
- Item #: 9SIVB8UKD12081
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO Power Supply STL1FANAF
- Model #: 759950244353
- Item #: 9SIVB8UKDA9134
- Return Policy: Magicpower Return Policy
Refurbished: PE1750 Server Power Supply, 1750 PS-2321-1,0M1662 320W
- Model #: 722954725524
- Item #: 9SIVB8UKAA7187
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS for PSA400M 400W equipment machine power supply PSA400M
- Model #: 792597710874
- Item #: 9SIVRWKKXD4359
- Return Policy: Nytke team Return Policy
Refurbished: GPR4815D Switching Power Supply Module
- Model #: 722954733130
- Item #: 9SIVB8UKAA5891
- Return Policy: Magicpower Return Policy
Refurbished: 1pcs for S2300 S2300E S5300E Server Power Supply SPS840-512QV-A
- Model #: 716837097464
- Item #: 9SIVB8UKX62942
- Return Policy: Magicpower Return Policy
Refurbished: For FLXA5101A Server Power Adapter 100W
- Model #: 752804575412
- Item #: 9SIVRWKKXB2017
- Return Policy: Nytke team Return Policy
Refurbished: KHACHIMO 300W Power Supply DPSN-300DB-1 E 06HYWF S4810P-PWR-DC-R ...
- Model #: 759950248832
- Item #: 9SIVB8UKDF9556
- Return Policy: Magicpower Return Policy
Refurbished: ME4012 ME4024 580W Power Supply 00VMRF 0VMRF SP-PCM02-HE580-AC
- Model #: 722954736643
- Item #: 9SIVB8UKAA6297
- Return Policy: Magicpower Return Policy
Refurbished: 1pcs for HSP960-D1205A S5300V3 5500V3 960W Power Supply 02310TBR ...
- Model #: 792597726820
- Item #: 9SIVB8UKX32512
- Return Policy: Magicpower Return Policy
Refurbished: PSB250Q-J3 For CWT 250W Switching Power Supply
- Model #: 753525954265
- Item #: 9SIVB8UKAA0219
- Return Policy: Magicpower Return Policy
Refurbished: Server Power Supply for CPR-1421-2M1LF 12V 116A 1400W
- Model #: 753525987379
- Item #: 9SIVB8UKAA8733
- Return Policy: Magicpower Return Policy
Refurbished: 1Pcs for DC Power Supply SPDFCBK-15G, DC-DC Converter, 750W/12V/62A
- Model #: 792597720934
- Item #: 9SIVRWKKXD8005
- Return Policy: Nytke team Return Policy
Refurbished: KHACHIMO PSU For 3Y 300W Power Supply YVIC0300AM
- Model #: 744623315768
- Item #: 9SIVB8UKD46439
- Return Policy: Magicpower Return Policy
Refurbished: For T5820 425W DPS-425FB A D425EF-03 3W8F7
- Model #: 792597703234
- Item #: 9SIVRWKKXD2303
- Return Policy: Nytke team Return Policy
Refurbished: 1PCS for M1R-2400V/2500G R1V-2275V R1U-2220V M1S-3500V/3400V ...
- Model #: 792597709519
- Item #: 9SIVRWKKXD4025
- Return Policy: Nytke team Return Policy
Refurbished: KHACHIMO 12V3.33A 40W Power Supply SRP-40A-1008
- Model #: 759950247637
- Item #: 9SIVB8UKDF9424
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO Power Supply For LPQ352 LPQ352-CEF
- Model #: 759950248276
- Item #: 9SIVB8UKDF9484
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS for SG9006 YX46T 071-000-541/539-00 2U POWER
- Model #: 792597711901
- Item #: 9SIVRWKKXD4633
- Return Policy: Nytke team Return Policy
Refurbished: 1PCS for Force10 CA95134 752-00594-01 0NDJM9 Power Supply ...
- Model #: 792597709953
- Item #: 9SIVRWKKXD4137
- Return Policy: Nytke team Return Policy
Refurbished: For 3020 7020 9020 SFF Power Supply HU255ES-01 AC255ES-00 D255AS-00
- Model #: 726727732269
- Item #: 9SIVRWKKXA3523
- Return Policy: Nytke team Return Policy
Refurbished: For SUN N240 V240 Server Power Supply 300-1674 300-1846 ASTEC AA23650
- Model #: 722954725234
- Item #: 9SIVB8UKAA7213
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO 1000W Switching Power Supply PWS-1K02A-1R
- Model #: 744623315072
- Item #: 9SIVB8UKD21935
- 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.
