Power Supplies - Showing 2017 - 2040 of 17940 Products
Refurbished: KHACHIMO 5250 3240 7440 18Pin 200W Power Supply AC200EPA-00 ...
- Model #: 744623303307
- Item #: 9SIVB8UKCW6076
- Return Policy: Magicpower Return Policy
Refurbished: For B320I B325 340 345 350 355 520 Power Supply APH005 DPS-250AB-71 B
- Model #: 726727732382
- Item #: 9SIVRWKKXA3527
- Return Policy: Nytke team Return Policy
Refurbished: 1Pcs for WEB/SNMP/242100.118 communication power supply, monitoring ...
- Model #: 792597721320
- Item #: 9SIVRWKKXD8146
- Return Policy: Nytke team Return Policy
Refurbished: KHACHIMO 12V 4.3A 50W For LEA50F LEA50F-12 Y LEA50F-12Y
- Model #: 759950243066
- Item #: 9SIVB8UKDA8933
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO Mini ITX FLEX Small 1U A35 S3 K39 500W Switching Power Supply ...
- Model #: 744623302256
- Item #: 9SIVB8UKCV8235
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS for 1000W 078-000-062 118031985 078-000-083 power supply tested ...
- Model #: 726099252419
- Item #: 9SIVRWKKXD1805
- Return Policy: Nytke team Return Policy
Refurbished: For ME4012 ME4024 Power Supply 580W Y5W2H SP-PCM02-HE580-AC
- Model #: 726727732306
- Item #: 9SIVRWKKXA3439
- Return Policy: Nytke team Return Policy
Refurbished: KHACHIMO Switching Power Supply For NEMIC-LAMBDA 12V 27A 300W For ...
- Model #: 759950248771
- Item #: 9SIVB8UKDF9534
- Return Policy: Magicpower Return Policy
Refurbished: For S5 small chassis power supply PCA227 FH-ZD271MG
- Model #: 752804580522
- Item #: 9SIVRWKKXB2588
- Return Policy: Nytke team Return Policy
Refurbished: For 8300E AIO Power Supply DPS-230QB A D11-230P1A 656932-001 ...
- Model #: 752804572770
- Item #: 9SIVRWKKXA2048
- Return Policy: Nytke team Return Policy
Refurbished: For T5-4 T5-8 Server Power Supply SPAORCL-01G 3060W 7047863
- Model #: 726727816426
- Item #: 9SIVRWKKXB0434
- Return Policy: Nytke team Return Policy
Refurbished: RSP-1500-24 24V 63A 1500W For MW Switching Power Supply
- Model #: 724780183349
- Item #: 9SIVB8UKA98984
- Return Policy: Magicpower Return Policy
Refurbished: Power Supply R4850N1 R4850N
- Model #: 753525944228
- Item #: 9SIVB8UKAA5347
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO PowerEdge 1600SC 450W Switching Power Supply DPS-450DB C ...
- Model #: 744623301273
- Item #: 9SIVB8UKCV8133
- Return Policy: Magicpower Return Policy
Refurbished: For SH SB-4120X 400W Power Supply SHRD-400P-P
- Model #: 753525942071
- Item #: 9SIVB8UKAA5105
- Return Policy: Magicpower Return Policy
Refurbished: 1Pcs for EPMU03 communication power supply
- Model #: 716837094852
- Item #: 9SIVB8UKX62291
- Return Policy: Magicpower Return Policy
Refurbished: XPS8950 T3660 7000MT 5000MT 8Pin 460W Power Supply AC460EBS-00 ...
- Model #: 703454716281
- Item #: 9SIVB8UKAJ6002
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO Z820 850W Switching Power Supply 632913-001 623195-001 ...
- Model #: 744623307336
- Item #: 9SIVB8UKD06352
- Return Policy: Magicpower Return Policy
Refurbished: For Enhancement ENH 1940 1U 400w Power Supply 80PLUS
- Model #: 722954731679
- Item #: 9SIVB8UKAA5755
- Return Policy: Magicpower Return Policy
Refurbished: Power Supply 341-100516-01 NC55-2KW-ACFW
- Model #: 753525985207
- Item #: 9SIVB8UKAA9177
- Return Policy: Magicpower Return Policy
Refurbished: 665W Switching Power Supply DPS-650EB A DPS-650EB B
- Model #: 753525945867
- Item #: 9SIVSY0KUU6898
- Return Policy: LiAnMengYuShangDian Return Policy
Refurbished: KHACHIMO 53.5V30A Power Supply RM1848G RM 1848G
- Model #: 759950243189
- Item #: 9SIVB8UKDA8935
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS for Power supply FLX450-50HUA/450W/FSP ATX450-50HUA
- Model #: 792597708314
- Item #: 9SIVRWKKXD3801
- Return Policy: Nytke team Return Policy
Refurbished: KHACHIMO 390 790 990 7010 9010 Power Supply L240AS-00 L240AS-01 ...
- Model #: 744623313337
- Item #: 9SIVB8UKD21717
- 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.
