PC Power Supplies

PC power supplies, also known as computer power supplies, are pieces of hardware which convert high-power mains electricity into usable DC power, for the components within your desktop computer. They convert AC (alternating current) from the mains to low-voltage, regulated DC (direct current).

Why use a PC power supply?

Power supply units (PSUs) are an essential piece of hardware within a computer as they supply power to all the components within your PC, such as the motherboard or graphics card. Typical PSU voltages are 3.3V, 5V and 12V.

PSUs are there to prevent spikes in the voltage supply and for surge protection.

Where are they installed?

You will find these power supplies in the back of a desktop computer. It is an internal hardware component.

Computer power supplies feature a power cable connector on one side and multiple wires on the other. These wires connect to various devices within the computer to supply power to them, for example, motherboards and hard drives. Computer power supplies also have a cooling fan which expels air out the back of a computer. They also prevent overheating through voltage control. There is usually a power switch at the back and another switch to alter the voltage.

How important is overall wattage?

It is important that you computer PSU covers the necessary wattage that your system requires. You can work this out by roughly adding up the consumption of all your parts. It is best to have an oversized PSU as it will cover your current wattage requirements, with room for extra if you decide to upgrade any of your components.

What is an ATX PSU?

ATX is a specification for motherboards which many PC power supplies meet. This means that the computer PSU fits into an ATX standard case and works alongside an ATX motherboard within the PC. An ATX power supply would be suitable for use in a modular computer as it has a standard case size.


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Description Price Input Voltage Output Voltage Power Rating Output Current Number of Outputs Length Width Depth Mounting Type Efficiency Load Regulation Line Regulation Holdup Time Input Frequency Range
RS庫存編號 754-2419
製造零件編號SS-400L1U Active PFC
BrandSeasonic
HK$1,127.53
單位
100 → 240V ac -12 V, 3.3 V, 5 V, 5 Vsb, 12 (Combined) V 400W 2.5 A, 20 A, 32 A, 300 mA 1 235mm 100mm 40mm Rack Mount >87% ±5% ±1% - -
RS庫存編號 136-9009
製造零件編號SSPSUPRIME1000WGD
BrandSeasonic
HK$2,627.20
單位
100 → 240V ac -12 V dc, 3.3 V dc, 5 V dc, 5 VSB V dc, 12 V dc 1000W 3 A, 25 A, 83 A, 300 mA 5 170mm 86mm 150mm Panel Mount 87% 0.5% - - 50 → 60Hz
RS庫存編號 136-6055
製造零件編號SSP-300SFB
BrandSeasonic
HK$343.09
單位
100 → 240V dc -12 V dc, 3.3 V dc, 5 V dc, 12 V dc 300W 2 A, 14 A, 17 A, 18 A, 20 A, 800 mA 6 100mm 125mm 63.5mm - - ±5% ±1% - 47 → 63Hz
RS庫存編號 781-7183
製造零件編號SSP-650RT
BrandSeasonic
HK$1,244.21
單位
220V -12 V, 3.3 V, 5 V, 12 V 650W 2.5 A, 20 A, 54 A, 300 mA 5 150mm 140mm 86mm Panel Mount 90% ±5% ±1% - -
RS庫存編號 136-9010
製造零件編號SSPSUPRIME1000WPLAT
BrandSeasonic
HK$3,126.55
單位
100 → 240V ac -12 V dc, 3.3 V dc, 5 V dc, 5 VSB V dc, 12 V dc 1000W 3 A, 25 A, 83 A, 300 mA 5 170mm 86mm 150mm Panel Mount 89% 0.5% - - 50 → 60Hz
RS庫存編號 181-2092
製造零件編號SSR-600TL
BrandSeasonic
HK$2,886.08
單位
100 → 240V dc -15 V dc, 3.3 V dc, 5 V dc, 5 VSB V dc, 12 V dc 600W 3 A, 20 A, 50 A, 300 mA 5 170mm 150mm 86mm Panel Mount 94% 0.5% - - 50 → 60Hz
RS庫存編號 136-6052
製造零件編號SSP-250SUB
BrandSeasonic
HK$384.11
單位
100 → 240V dc -12 V dc, 3.3 V dc, 5 V dc, 12 V dc 250W 2 A, 14 A, 17 A, 18 A, 800 mA 6 150mm 81.5mm 40.5mm - - ±5% ±1% - 47 → 63Hz
RS庫存編號 781-7177
製造零件編號1GT35GF1DBA10W
BrandSeasonic
HK$857.15
單位
220V -12 V, 3.3 V, 5 V, 12 V 350W 2 A, 12 A, 16 A, 29 A, 300 mA 5 150mm 140mm 86mm Panel Mount 90% ±5% ±1% - -
RS庫存編號 181-2082
製造零件編號SSR-550FX
BrandSeasonic
HK$1,202.46
單位
100 → 240V dc -15 V dc, 3.3 V dc, 5 V dc, 5 VSB V dc, 12 V dc 550W 3 A, 20 A, 45 A, 300 mA 5 140mm 150mm 86mm Panel Mount 90% - - - 50 → 60Hz
RS庫存編號 708-2147
製造零件編號SS-600ET APFC F3
BrandSeasonic
HK$961.30
單位
220V ac ±12 V dc, 3.3 V dc, 5 V dc 600W 2.5 A, 24 A, 46 A, 800 mA 5 150mm 140mm 86mm Panel Mount 82% ±5% ±1% - -
RS庫存編號 781-7192
製造零件編號1RT75GFS01B10W
BrandSeasonic
HK$1,538.04
單位
220V -12 V, 3.3 V, 5 V, 12 V 750W 2.5 A, 20 A, 62 A, 300 mA 5 150mm 140mm 86mm Panel Mount 90% ±5% ±1% - -
RS庫存編號 103-3920
製造零件編號SSP-300ST
BrandSeasonic
HK$485.86
單位
100 → 240V ac ±12 V dc, 3.3 V dc, 5 V dc 300W 0.3 → 24A 5 150mm 140mm 86mm Panel Mount ≥82% ±5% ±1% - 50/60Hz
RS庫存編號 781-7189
製造零件編號1RT55GFS01B10W
BrandSeasonic
HK$1,159.83
單位
220V -12 V, 3.3 V, 5 V, 12 V 550W 2.5 A, 20 A, 45 A, 300 mA 5 150mm 140mm 86mm Panel Mount 90% ±5% ±1% - -
RS庫存編號 175-3507
BrandSeasonic
HK$3,311.65
單位
240V ac +3.3 V dc, +5 V dc, +12 V dc 1296W 25 A, 108 A 3 150mm 170mm 86mm DIN Rail Mount 90% 0.5% - - 50 → 60Hz
RS庫存編號 121-7780
BrandRS PRO
HK$833.98
單位
200 → 240V ac ±12 V dc, 3.3 V dc, 5 V dc 850W 0.3 → 65A 1 - - - DIN Rail >82% - - - -
RS庫存編號 183-2772
製造零件編號SSR-1300PD
BrandSeasonic
HK$3,644.56
單位
100 → 240V dc ±12 V dc, 3.3 V dc, 5 V dc 1.32kW 0.3 A @ 12 V, 3 A @ 5 V, 25 A @ 3.3 V, 25 A @ 5 V, 108 A @ 12 V - 170mm 150mm 86mm - 92% 1% - >17ms 50 → 60Hz
RS庫存編號 136-9011
製造零件編號SSPSUPRIME1200WGD
BrandSeasonic
HK$3,311.65
單位
100 → 240V ac -12 V dc, 3.3 V dc, 5 V dc, 5 VSB V dc, 12 V dc 1200W 3 A, 25 A, 100 A, 300 mA 5 170mm 86mm 150mm Panel Mount 87% 0.5% - - 50 → 60Hz
RS庫存編號 181-2086
製造零件編號SSR-650PX
BrandSeasonic
HK$1,580.92
單位
100 → 240V dc -15 V dc, 3.3 V dc, 5 V dc, 5 VSB V dc, 12 V dc 650W 3 A, 20 A, 54 A, 300 mA 5 140mm 150mm 86mm Panel Mount 92% - - - 50 → 60Hz
RS庫存編號 181-2081
製造零件編號SSR-1000FX
BrandSeasonic
HK$2,164.56
單位
100 → 240V dc -15 V dc, 3.3 V dc, 5 V dc, 5 VSB V dc, 12 V dc 1kW 3 A, 25 A, 83 A, 300 mA 5 140mm 150mm 86mm Panel Mount 90% - - - 50 → 60Hz
RS庫存編號 136-9007
製造零件編號SSPSUPRIME850WGD
BrandSeasonic
HK$2,312.60
單位
100 → 240V ac -12 V dc, 3.3 V dc, 5 V dc, 5 VSB V dc, 12 V dc 850W 2.5 A, 20 A, 70 A, 300 mA 5 170mm 86mm 150mm Panel Mount 87% 0.5% - - 50 → 60Hz