Power Supplies - Showing 1993 - 2016 of 17942 Products
Refurbished: 6EP1437-2BA20 SITOP PSU300S 40 A Stabilized Power Supply
- Model #: 724780182700
- Item #: 9SIVB8UKA98924
- Return Policy: Magicpower Return Policy
Refurbished: 1Pcs for RCB600 12V 24V 48V Medical Power Supply
- Model #: 792597727834
- Item #: 9SIVB8UKX32829
- Return Policy: Magicpower Return Policy
Refurbished: For R230 R240 Server Power P59VM P3G94 9J6JG AC250E D250E
- Model #: 792597702794
- Item #: 9SIVRWKKXD2192
- Return Policy: Nytke team Return Policy
Refurbished: 510S PA-1261-7 Small Case Power Supply 260W 6+4 Pin
- Model #: 722954727351
- Item #: 9SIVSYTKUT4636
- Return Policy: SuZhouLiYuanLiXinBaiHuo Return Policy
Refurbished: KHACHIMO Power Supply For EFORE 230V 460W Power Supply SR 92E120 ...
- Model #: 759950244209
- Item #: 9SIVB8UKDA9120
- Return Policy: Magicpower Return Policy
Refurbished: MRW-6400P-R 400W Server Redundant Power Module
- Model #: 722954731914
- Item #: 9SIVB8UKAA5797
- Return Policy: Magicpower Return Policy
Refurbished: For SUN X9684A 300-1449 E220R E420R Server Power Supply 3001449-03, ...
- Model #: 722954725265
- Item #: 9SIVB8UKAA7178
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO Power Supply DS-KAA8402-Y
- Model #: 759950244544
- Item #: 9SIVB8UKDA9178
- Return Policy: Magicpower Return Policy
Refurbished: For PS-4801-1Q1 POWER 1U 800W Server Power Supply
- Model #: 752804577485
- Item #: 9SIVRWKKXB2217
- Return Policy: Nytke team Return Policy
Refurbished: 1Pcs for PS-2551-7L server power supply 12V, 45A, 550W redundant power ...
- Model #: 792597721009
- Item #: 9SIVRWKKXD7968
- Return Policy: Nytke team Return Policy
Refurbished: For Switched Power Supply U1A-D10550-DRB-H 550W
- Model #: 722954731860
- Item #: 9SIVSY0KUS8881
- Return Policy: LiAnMengYuShangDian Return Policy
Refurbished: KHACHIMO PSU For Delta 830W Power Supply DPS-830AB A D20852-005
- Model #: 726099221330
- Item #: 9SIVB8UKCU6084
- Return Policy: Magicpower Return Policy
Refurbished: D1500EF-00 800GY 1500W Alienware Area-51 Power Supply
- Model #: 722954988585
- Item #: 9SIVB8UKAA6570
- Return Policy: Magicpower Return Policy
Refurbished: 1pcs for MIN-6251P M266A FSP060-RHBN3 FSP036-RBBN2 96PS-A36W12W7 ...
- Model #: 716837087823
- Item #: 9SIVB8UKX59584
- Return Policy: Magicpower Return Policy
Refurbished: For 480 400 498 600 800 G1 G2 G3 Power Supply DPS-300AB-72 B
- Model #: 726727729238
- Item #: 9SIVRWKKXA3065
- Return Policy: Nytke team Return Policy
Refurbished: LWQ130-5FF4 For TDK-LAMBDA Power Supply 5V+-15V 24V
- Model #: 753525956832
- Item #: 9SIVB8UKAA8923
- Return Policy: Magicpower Return Policy
Refurbished: For R1CA2801A APM12V0302 Server Power Module Industrial Computer
- Model #: 722954732348
- Item #: 9SIVB8UKAA5828
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS for Power supply PS2783
- Model #: 792597713691
- Item #: 9SIVRWKKXD5586
- Return Policy: Nytke team Return Policy
Refurbished: 1Pcs for X255 AA21650 24P6849 24P6850 Server Power Supply 370W
- Model #: 792597726073
- Item #: 9SIVRWKKXD9499
- Return Policy: Nytke team Return Policy
Refurbished: For EFRP-3300 600W + 300W triple redundant power cage
- Model #: 726727731019
- Item #: 9SIVRWKKXA3325
- Return Policy: Nytke team Return Policy
Refurbished: 1Pcs for EVR50-12S Electric Vehicle Contactor 50A/450VDC Coil DC12V
- Model #: 792597718290
- Item #: 9SIVRWKKXD7212
- Return Policy: Nytke team Return Policy
Refurbished: KHACHIMO FLEX Power Supply Small 1U K39 450W Power Supply ENP-7145B
- Model #: 759950241130
- Item #: 9SIVB8UKDA0427
- Return Policy: Magicpower Return Policy
Refurbished: AIO B325 B320 B340 B520 540 8Pin*2 200W Switching Power Supply ...
- Model #: 753525934786
- Item #: 9SIVB8UKA99266
- Return Policy: Magicpower Return Policy
Refurbished: 1Pcs for 450W power supply (RS-450-AMAP-F1)
- Model #: 716837092841
- Item #: 9SIVB8UKX61573
- 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.
