Power Supplies - Showing 2281 - 2304 of 18360 Products
Refurbished: For THERMO EOS Switching Power Supply LFWLT150-1003-K
- Model #: 722954722547
- Item #: 9SIVB8UKAA6889
- Return Policy: Magicpower Return Policy
Refurbished: For LSQM1DC650 H3C PSR650D Power Module 650W
- Model #: 722954729812
- Item #: 9SIVTFFKXZ7537
- Return Policy: Zienroylein Return Policy
Refurbished: M6412A 4G Fiber Controller AG638-60410 AG638-04500 461494-005
- Model #: 722954736414
- Item #: 9SIVB8UKAA6261
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO CRPS 400W Switching Power Supply P1S-2400V-R
- Model #: 744623315287
- Item #: 9SIVB8UKD21949
- Return Policy: Magicpower Return Policy
Refurbished: For 3P Pacific Power Products KPP250-7A 250W Power Supply
- Model #: 726727722482
- Item #: 9SIVRWKKXA2253
- Return Policy: Nytke team Return Policy
Refurbished: SPR2C620 SPR1C620 Array Networks APV 3520 5200 620W Switching Power ...
- Model #: 753525948585
- Item #: 9SIVB8UKAA0032
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS fo ENP-7130B2 300W/EFAP-M301 flex small 1U industrial control server ...
- Model #: 792597716586
- Item #: 9SIVRWKKXD6582
- Return Policy: Nytke team Return Policy
Refurbished: 1Pcs for contactor GXNC23CA-0 24VDC
- Model #: 792597720200
- Item #: 9SIVRWKKXD7806
- Return Policy: Nytke team Return Policy
Refurbished: 1Pcs for R4875G1 R4875G5 Communication Power Supply 48V75A 4000W
- Model #: 716837093800
- Item #: 9SIVB8UKX61942
- Return Policy: Magicpower Return Policy
Refurbished: For FSP250-50PLE Small 1U Flex Mini Itx NAS Power Supply 250W
- Model #: 722954728600
- Item #: 9SIVB8UKAA5463
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO 5070 7070 5080 7060 3050 3650 6Pin 500W Power Supply ...
- Model #: 744623308371
- Item #: 9SIVB8UKD06299
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS for P2H-5500V P2H-5400V P2F-5400V P2F-5500V Industrial Power ...
- Model #: 792597709458
- Item #: 9SIVRWKKXD4013
- Return Policy: Nytke team Return Policy
Refurbished: Dell TJJ3M PowerEdge M1000E 2700W Server Hot Swap Power Supply Unit - ...
- Brand: DELL
- Type: Power Supply Unit - PSU
- Model #: TJJ3M_1
- Item #: 9SIVG1JK9P2335
- Return Policy: Fastparts Return Policy
Refurbished: 1 PCS XR1648B Communication Power Module For POWER ONE
- Model #: 753525934144
- Item #: 9SIVT8HKWF2805
- Return Policy: YunYunKeJiShiZhuangDian Return Policy
Refurbished: 60W Switching Power Supply PAC-60WC-L
- Model #: 753525944075
- Item #: 9SIVB8UKAA5337
- Return Policy: Magicpower Return Policy
Refurbished: 1Pcs for ASR1002 high-end core router with ASR1000-ESP5 ASR1002-X dual ...
- Model #: 792597726592
- Item #: 9SIVRWKKXD9627
- Return Policy: Nytke team Return Policy
Refurbished: For TDK-Lambda HWS300-24 HWS300-24/HD HWS300-48/H
- Model #: 752804577720
- Item #: 9SIVRWKKXB2179
- Return Policy: Nytke team Return Policy
Refurbished: KHACHIMO 600W Power Supply MP4-2Q-1L-4LE-00 73-540-0051
- Model #: 759950245336
- Item #: 9SIVB8UKDA9264
- Return Policy: Magicpower Return Policy
Refurbished: For NF5170M4 SA5112M4 550W Power Supply GW-CRPS550 ...
- Model #: 726727817171
- Item #: 9SIVRWKKXB1007
- Return Policy: Nytke team Return Policy
Refurbished: Communication Power HSP100-S12D
- Model #: 703454718421
- Item #: 9SIVB8UKAJ6267
- Return Policy: Magicpower Return Policy
Refurbished: 1Pcs for 3010 7010 9010 790 390 SFF Power Supply H240AS-00 AC240AS-00
- Model #: 792597728145
- Item #: 9SIVB8UKX32960
- Return Policy: Magicpower Return Policy
Refurbished: For PWS-802A-1R 800W Ultra Micro Server Power Supply pws-802A-1r
- Model #: 726727817201
- Item #: 9SIVRWKKXB1010
- Return Policy: Nytke team Return Policy
Refurbished: AX150 Power Supply PN: 071-000-457
- Model #: 722954725289
- Item #: 9SIVB8UKAA7185
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO 4.5V40A 200W Switching Power Supply MCP200WS-4.5A-C
- Model #: 744623310527
- Item #: 9SIVB8UKD12121
- 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.
