Power Supplies - Showing 1921 - 1944 of 17993 Products
Refurbished: 1Pcs for R4850G1 Communication Power Supply 48V50A 3000W
- Model #: 716837093930
- Item #: 9SIVB8UKX61947
- Return Policy: Magicpower Return Policy
Refurbished: MMC50U 50W Switching Power Supply MMC50U-2
- Model #: 753525992038
- Item #: 9SIVB8UKAA8206
- Return Policy: Magicpower Return Policy
Refurbished: For XP Power P4S3T19-FT4 Switching Power Supply
- Model #: 724780778378
- Item #: 9SIVB8UKAA6631
- Return Policy: Magicpower Return Policy
Refurbished: 1Pcs for M410 M415 M437 M428 M425 M433 Small Chassis 500W Power Supply
- Model #: 792597728053
- Item #: 9SIVB8UKX32972
- Return Policy: Magicpower Return Policy
Refurbished: DPS-550AB-11A 550W For Inspur NF5280M6 M5 M4 Server Power Supply ...
- Model #: 753525955415
- Item #: 9SIVTE8KXH6374
- Return Policy: Coretix Return Policy
Refurbished: 1PCS For FSP400-60RGVBD FSP420-30RGGBD 420W power supply
- Model #: 792597704279
- Item #: 9SIVRWKKXD2535
- Return Policy: Nytke team Return Policy
Refurbished: KHACHIMO 2700W Power Supply RG-PA2700I
- Model #: 759950247125
- Item #: 9SIVB8UKDF9371
- Return Policy: Magicpower Return Policy
Refurbished: Power Supply PS2783
- Model #: 753525942170
- Item #: 9SIVSYTKUS9578
- Return Policy: SuZhouLiYuanLiXinBaiHuo Return Policy
Refurbished: 1pcs for R1840-02 9373CBBU-0010 BBU DS600-F20 Controller Battery
- Model #: 792597722495
- Item #: 9SIVRWKKXD8319
- Return Policy: Nytke team Return Policy
Refurbished: 1Pcs for FSP200-1H02 24V 200W industrial power board
- Model #: 792597727445
- Item #: 9SIVB8UKX32818
- Return Policy: Magicpower Return Policy
Refurbished: PSU For FSP CRPS 700W Power Supply SPR1C700
- Model #: 753525937374
- Item #: 9SIVB8UKA99557
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO 36V 100W For PBA100F-36 PBA100F PBA100F-36-N
- Model #: 759950241321
- Item #: 9SIVB8UKDA0473
- Return Policy: Magicpower Return Policy
Refurbished: For PCSA-300P-X2V PCSA-300P-X2S power supply
- Model #: 726727722383
- Item #: 9SIVRWKKXA2280
- Return Policy: Nytke team Return Policy
Refurbished: 500W Power Supply 865408-B21 865398-001 866729-001
- Model #: 753525949988
- Item #: 9SIVB8UKAA0170
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO 1U 250W Switching Power Supply HK353-11UEP
- Model #: 744623304977
- Item #: 9SIVB8UKCW6274
- Return Policy: Magicpower Return Policy
Refurbished: PAC-600WA-F Switch Power Supply PAC-600WA-F Server Module
- Model #: 722954721229
- Item #: 9SIVB8UKAA6804
- Return Policy: Magicpower Return Policy
Refurbished: PS-5221-09/6/8 PE-5221-08 220WITX Small Case
- Model #: 722954988004
- Item #: 9SIVB8UKAA6533
- Return Policy: Magicpower Return Policy
Refurbished: S8VK-G01524 Input AC100-240V Output DC24V 0.65A 15W Switching Power ...
- Model #: 753525948233
- Item #: 9SIVB8UKA99993
- Return Policy: Magicpower Return Policy
Refurbished: For Z2 G4 G5 Power Supply 650W DPS-650AB-30 A L36049-003 L57253-003
- Model #: 726727733693
- Item #: 9SIVRWKKXA3837
- Return Policy: Nytke team Return Policy
Refurbished: 1pcs for 757.6W YGEAO758AM YGEA0758AM-6R01S10 industrial power supply
- Model #: 716837086086
- Item #: 9SIVB8UKX58944
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS for SPR1C350 9YA3500304 power supply SPR2C350 9YR3500406 power ...
- Model #: 792597712113
- Item #: 9SIVRWKKXD4640
- Return Policy: Nytke team Return Policy
Refurbished: 1Pcs for EVT250D-12-B-01 Lithium battery contactor 12VDC250A
- Model #: 792597718863
- Item #: 9SIVRWKKXD7203
- Return Policy: Nytke team Return Policy
Refurbished: Power Supply For 110V4.3A 480W Power Supply SYS-480-S110 SYN-480-S110
- Model #: 703454714768
- Item #: 9SIVB8UKAJ5737
- Return Policy: Magicpower Return Policy
Refurbished: For Communication Power Module PSE350-A
- Model #: 722954723827
- Item #: 9SIVT8HKWF2829
- Return Policy: YunYunKeJiShiZhuangDian 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.
