Power Supplies - Showing 2305 - 2328 of 18293 Products
Refurbished: QWF1EMUA 32PORT Communication Power Supply
- Model #: 722954727931
- Item #: 9SIVB8UKAA7458
- Return Policy: Magicpower Return Policy
Refurbished: AX150 Power Supply PN: 071-000-457
- Model #: 722954725289
- Item #: 9SIVB8UKAA7185
- Return Policy: Magicpower Return Policy
Refurbished: For 3Y YM-2721A YM-2821A Server 2U Power Module 720W
- Model #: 722954728778
- Item #: 9SIVB8UKAA5439
- Return Policy: Magicpower Return Policy
Refurbished: For EFRP-463 Server Power Supply 460W
- Model #: 726727723496
- Item #: 9SIVRWKKXA2458
- Return Policy: Nytke team Return Policy
Refurbished: 1 PCS XR1648B Communication Power Module For POWER ONE
- Model #: 753525934144
- Item #: 9SIVT8HKWF2805
- Return Policy: YunYunKeJiShiZhuangDian Return Policy
Refurbished: For D2600 AJ940-04402 519316-001 SAS Module +
- Model #: 726727775570
- Item #: 9SIVRWKKXA4399
- Return Policy: Nytke team Return Policy
Refurbished: 1PCS for G9 1400W Power Supply 720620-B21 733427-001 754383-001 ...
- Model #: 792597706075
- Item #: 9SIVRWKKXD2890
- Return Policy: Nytke team Return Policy
Refurbished: For HS21 39Y7360 39Y7400 74P4453 8677 Power supply 2000W
- Model #: 752804573197
- Item #: 9SIVRWKKXB1666
- 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: S7502 S6502 Switch Power Supply PSR300-A AC PSR300-D DC
- Model #: 722954721632
- Item #: 9SIVB8UKAA6819
- Return Policy: Magicpower Return Policy
Refurbished: For GW-CRPS550 12V 45A 550W Server Power Supply
- Model #: 703454720103
- Item #: 9SIVB8UKAJ6465
- Return Policy: Magicpower Return Policy
Refurbished: Switch Power Supply PSC250-A W0PSA2500 250W POE Series
- Model #: 703454924921
- Item #: 9SIVB8UKA98682
- Return Policy: Magicpower Return Policy
Refurbished: 1Pcs for AMS2500 AMS2000 2100 2300 Storage 3276079-A PPH1005
- Model #: 792597985067
- Item #: 9SIVB8UKX57204
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO 8Pin 240W Power Supply H0GX2 0H0GX2 D240EBS-00 ...
- Model #: 744623317564
- Item #: 9SIVB8UKD64669
- Return Policy: Magicpower Return Policy
Refurbished: 1800W Switching Power Supply CSU1800AP-3-100
- Model #: 753525943924
- Item #: 9SIVB8UKAA5326
- Return Policy: Magicpower Return Policy
Refurbished: 3620i DC48V 700W Switching Power Supply H700ED-S0 0C0X78
- Model #: 753525943351
- Item #: 9SIVSY0KUU3160
- Return Policy: LiAnMengYuShangDian Return Policy
Refurbished: 150W Power Supply UPF150-301
- Model #: 703454716113
- Item #: 9SIVB8UKAJ6060
- Return Policy: Magicpower Return Policy
Refurbished: 400W Power Supply ACE-841AP
- Model #: 753525942057
- Item #: 9SIVB8UKAA5097
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO DL388P 380P 360 G7 G8 460W Switching Power Supply HSTNS-PL28 ...
- Model #: 744623303208
- Item #: 9SIVB8UKCW6034
- Return Policy: Magicpower Return Policy
Refurbished: 1pcs for E450D650 power supply FSP180-10TGBAA PA-1181-10AC B ...
- Model #: 716837097129
- Item #: 9SIVB8UKX62948
- Return Policy: Magicpower Return Policy
Refurbished: 5V +12V -12V AC-DC Power Supply For SA40-1313
- Model #: 753525989052
- Item #: 9SIVB8UKAA7700
- Return Policy: Magicpower Return Policy
Refurbished: infortrend Power Supply 9273CPSU-0010 460W IFRP-462
- Model #: 724780778439
- Item #: 9SIVB8UKAA6654
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO TFX 10Pin 260W Switching Power Supply PA-2261-1
- Model #: 744623316857
- Item #: 9SIVB8UKD64481
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO OPTIPLEX XE-DT 300W Power Supply D300ED-00 L300E-00 ...
- Model #: 744623316000
- Item #: 9SIVB8UKD46487
- 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.
