Power Supplies - Showing 1993 - 2016 of 17941 Products
Refurbished: 500W Small 1U ITX HTPC FLEX M1 K39 K49 M41 Small Chassis Power Supply
- Model #: 722954732645
- Item #: 9SIVB8UKAA5846
- Return Policy: Magicpower Return Policy
Refurbished: 1Pcs for R4850G6 R4850G2 Communication Power Module 48V50A 3000W
- Model #: 716837094937
- Item #: 9SIVB8UKX62274
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO For MTW-5820V 820W Switching Power Supply
- Model #: 726099222405
- Item #: 9SIVB8UKCU6270
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS for ST-250UAE-05E 250W FLEX Small 1U Industrial Control Power Supply
- Model #: 792597716197
- Item #: 9SIVRWKKXD6575
- Return Policy: Nytke team Return Policy
Refurbished: For Power8 S824 00RR363 00RR365 7001691-J002 900W Power Supply
- Model #: 726727817782
- Item #: 9SIVRWKKXB1165
- Return Policy: Nytke team Return Policy
Refurbished: PAC800D12-B1 server power supply 12V/66A/800W platinum redundant ...
- Model #: 703454723128
- Item #: 9SIVB8UKAJ6782
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO 380 gen10 500W Power Supply HSTNS-PL40-1 865408-b21 ...
- Model #: 744623307602
- Item #: 9SIVB8UKD06455
- Return Policy: Magicpower Return Policy
Refurbished: Communication Power Monitoring Module PSM-BA
- Model #: 722954726194
- Item #: 9SIVT8HKWF3254
- Return Policy: YunYunKeJiShiZhuangDian Return Policy
Refurbished: KHACHIMO ZXR10 T160G-ACPW
- Model #: 759950240072
- Item #: 9SIVB8UKDA0354
- Return Policy: Magicpower Return Policy
Refurbished: R510 R910 Z1100P-00 7001515-J100 Server Power Supply 1100W
- Model #: 722954728556
- Item #: 9SIVB8UKAA5442
- Return Policy: Magicpower Return Policy
Refurbished: For DL320e G8 V2 1U Server IDC NAS E3-1280 V3
- Model #: 792597702701
- Item #: 9SIVRWKKXD2197
- Return Policy: Nytke team Return Policy
Refurbished: 1Pcs for R48-3500e Power Module 48V 50A Voltage 48V-58V 3500W
- Model #: 792597721962
- Item #: 9SIVRWKKXD8309
- Return Policy: Nytke team Return Policy
Refurbished: LPT62 For ASTEC Industrial Medical Equipment Power Supply ...
- Model #: 724780778576
- Item #: 9SIVB8UKAA6661
- Return Policy: Magicpower Return Policy
Refurbished: For PSM-6550P Rated 550W Server Power Supply
- Model #: 722954724503
- Item #: 9SIVB8UKAA7074
- Return Policy: Magicpower Return Policy
Refurbished: YM-2111A SSG-140 CP-1198R2 Industry Power Supply
- Model #: 724780182366
- Item #: 9SIVB8UKA98883
- Return Policy: Magicpower Return Policy
Refurbished: DL580 G5 DPS-1200FB A 441830-001 438202-001 440785-001 1200W ...
- Model #: 753525955828
- Item #: 9SIVB8UKAA8811
- Return Policy: Magicpower Return Policy
Refurbished: 280W AcBel PC6001 Power Supply PS-5281-7VR RoHS
- Model #: 722954721687
- Item #: 9SIVB8UKAA6838
- Return Policy: Magicpower Return Policy
Refurbished: For T1700MT 3020 9020 power supply H290AM-006P graphics card D365EM-00 ...
- Model #: 726727732870
- Item #: 9SIVRWKKXA3662
- Return Policy: Nytke team Return Policy
Refurbished: KHACHIMO 380 388 G6 G7 G8 460W Power Supply DPS-460MB A HSTNS-PD28 ...
- Model #: 744623299655
- Item #: 9SIVB8UKCU6651
- Return Policy: Magicpower Return Policy
Refurbished: Power Supply For SMU01C
- Model #: 753525991208
- Item #: 9SIVB8UKAA8017
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO AT P8P9 200W Switching Power Supply ACE-925A-RS ACE-925A
- Model #: 726099222115
- Item #: 9SIVB8UKCU6155
- Return Policy: Magicpower Return Policy
Refurbished: PS-5181-02 VG-ROHS TFX Desktop Power PS-5241-02/03
- Model #: 722954733505
- Item #: 9SIVB8UKAA5937
- Return Policy: Magicpower Return Policy
Refurbished: For TC6600-CB50E20 1400W Knife Box Power Supply GW-ERP1U1400C-SG ...
- Model #: 731029999036
- Item #: 9SIVRWKKXD1133
- Return Policy: Nytke team Return Policy
Refurbished: 3040 3050 5040 8Pin 240W Power Supply 04GJV9 0H62JR 02PIRD 007F9T ...
- Model #: 753525935462
- Item #: 9SIVB8UKA99379
- 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.
