Power Supplies - Showing 2377 - 2400 of 18332 Products
Refurbished: KHACHIMO Power Supply For ELTEK X3750B1-VC
- Model #: 759950247743
- Item #: 9SIVB8UKDF9422
- Return Policy: Magicpower Return Policy
Refurbished: For POWER ONE Communication Power Module XR1448
- Model #: 703454718179
- Item #: 9SIVB8UKAJ6266
- Return Policy: Magicpower Return Policy
Refurbished: 48V 480W Power Supply DRL-48V480W1EN
- Model #: 703454715505
- Item #: 9SIVB8UKAJ5920
- Return Policy: Magicpower Return Policy
Refurbished: 1Pcs for TS440 TS540 Server 450W Power Supply FSA028 03X4373
- Model #: 716837082828
- Item #: 9SIVB8UKX57485
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO Industrial computer power supply SH300A8H+P4 ENH-0135
- Model #: 745635673952
- Item #: 9SIVSY0KUR7886
- Return Policy: LiAnMengYuShangDian Return Policy
Refurbished: FSP3501U SPI350U4B FSP3501UR-JNP3 For JUNIPER SSG520M 350W 1U ...
- Model #: 753525950038
- Item #: 9SIVB8UKAA0191
- Return Policy: Magicpower Return Policy
Refurbished: For 53.5V 50A 3000W Power Supply For SR4850 SR4850E
- Model #: 753525988543
- Item #: 9SIVB8UKAA7688
- Return Policy: Magicpower Return Policy
Refurbished: For EFRP-G757 750W Server Power Supply
- Model #: 726727776959
- Item #: 9SIVRWKKXB0226
- Return Policy: Nytke team Return Policy
Refurbished: 1PCS for YM-6521B YM-6521BAR Server, Power Module 520W
- Model #: 792597725182
- Item #: 9SIVRWKKXD9364
- Return Policy: Nytke team Return Policy
Refurbished: New Power Supply 5V60A 300W Power Supply CLW300-5-L
- Model #: 722954989193
- Item #: 9SIVB8UKAJ5565
- Return Policy: Magicpower Return Policy
Refurbished: Power Supply For 3020 7020 9020MT XE2 Power Supply HUD365EM-00
- Model #: 752804572121
- Item #: 9SIVRWKKXA1995
- Return Policy: Nytke team Return Policy
Refurbished: Switching Power Supply Module For MSR3640 MSR3660 300W PSR300-12A2 ...
- Model #: 724780181031
- Item #: 9SIVB8UKA98746
- Return Policy: Magicpower Return Policy
Refurbished: P720 P740 P770 7001490-J000 74Y9082 74Y5985 74Y8677 00FW424 ...
- Model #: 753525985283
- Item #: 9SIVB8UKAA9164
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO 200W Switching Power Supply RP-2015-10
- Model #: 744623301839
- Item #: 9SIVB8UKCV8165
- Return Policy: Magicpower Return Policy
Refurbished: 1PCS for DP1H-6350F 350W 1U Industrial Computer Server Power Supply
- Model #: 792597715930
- Item #: 9SIVRWKKXD6382
- Return Policy: Nytke team Return Policy
Refurbished: 1pcs for MD3620I/34/3600 PS6100 H700ED-S0 C0X78 Power Supply ...
- Model #: 792597712854
- Item #: 9SIVRWKKXD4836
- Return Policy: Nytke team Return Policy
Refurbished: 1Pcs for 1400W FSP1400-21DRM industrial control power supply
- Model #: 716837085867
- Item #: 9SIVB8UKX58907
- Return Policy: Magicpower Return Policy
Refurbished: KHACHIMO ML350e G8 460W Switching Power Supply DPS-460DB-6 A ...
- Model #: 744623315027
- Item #: 9SIVB8UKD21915
- Return Policy: Magicpower Return Policy
Refurbished: For FSP400-60WSA-5K FSP600-50UEB FSP400-602UE Power Supply
- Model #: 726727818307
- Item #: 9SIVRWKKXB1277
- Return Policy: Nytke team Return Policy
Refurbished: 24Pin*2 650W Power Supply PS-4651-1ZT
- Model #: 753525946833
- Item #: 9SIVB8UKA99773
- Return Policy: Magicpower Return Policy
Refurbished: Power Supply for 3850-48P/24P Series Switches PWR-C1-1100WAC
- Model #: 753525986655
- Item #: 9SIVB8UKAA8591
- Return Policy: Magicpower Return Policy
Refurbished: 6200 8000 6005 6300 8300 4300 611482-001 611481-001 503376-001 ...
- Model #: 722954987670
- Item #: 9SIVB8UKAA6498
- Return Policy: Magicpower Return Policy
Refurbished: 1Pcs for HAC250P-490 (E) COMPACTPCI Power Supply
- Model #: 716837090786
- Item #: 9SIVB8UKX60852
- Return Policy: Magicpower Return Policy
Refurbished: For 3D Communication Power Module 3C17267
- Model #: 703454718490
- Item #: 9SIVB8UKAJ6287
- 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.
