MPN

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.

38 Products showing for PC Power Supplies

1 of 2

Sort by

Compare Product Details

1 2

Results per page

Be the first to know about our latest products and offers

Email address

The personal information you provide to us when signing up to this mailing list will be processed in line with the Privacy Policy

In Stock RS Better World RS PRO 800 W PC Power Supply 240V ac 12V RS stock no. 208-3900 Subtotal (1 unit) R 2 325,61(exc. VAT) R 2 325,61/unit Quantity		-	PC Power Supply	-	12V	-	66A	5	150mm	800W	160mm	85mm	Desktop	-	85%	-	0°C	30°C	-	EN	1.78kg	Yes	80 PLUS Bronze	240V ac
In Stock RS Better World RS PRO 850 W PC Power Supply 240V ac 12V dc RS stock no. 242-0548 Subtotal (1 unit) R 3 024,63(exc. VAT) R 3 024,63/unit Quantity		-	PC Power Supply	-	12V dc	-	20A	5	-	850W	150mm	140mm	-	-	90%	-	-	-	-	TUV, CE, c TUV US, RoHS, LVD, CB	-	Yes	80 PLUS Bronze	240V ac
In Stock RS Better World RS PRO 500 W PC Power Supply 240V ac 12V RS stock no. 201-1836 Subtotal (1 unit) R 1 354,49(exc. VAT) R 1 354,49/unit Quantity		-	PC Power Supply	-	12V	-	38A	5	86mm	500W	150mm	140mm	-	-	-	-	-	-	-	TUV, CE	-	Yes	80 PLUS Bronze	240V ac
In Stock RS Better World RS PRO 700 W PC Power Supply 240V ac 12V RS stock no. 201-1840 Subtotal (1 unit) R 1 963,39(exc. VAT) R 1 963,39/unit Quantity		-	PC Power Supply	-	12V	-	46A	5	86mm	700W	150mm	140mm	-	-	-	-	-	-	-	CE, TUV	-	Yes	80 PLUS Bronze	240V ac
In Stock RS Better World RS PRO 400 W PC Power Supply 240V ac 12V dc RS stock no. 208-3898 Subtotal (1 unit) R 1 349,53(exc. VAT) R 1 349,53/unit Quantity		-	PC Power Supply	-	12V dc	-	300A	5	150mm	400W	140mm	85mm	Desktop	-	85%	-	30°C	-	-	EN	1.45kg	Yes	80 PLUS Bronze	240V ac
In Stock RS Better World RS PRO 350 W PC Power Supply 240V dc RS stock no. 429-771 Subtotal (1 unit) R 1 376,14(exc. VAT) R 1 376,14/unit Quantity		-	PC Power Supply	-	-	-	-	-	-	350W	85mm	175mm	-	-	85%	-	0°C	50°C	-	TUV, cTUVus, ErP, CB, FCC, CE, UKCA	0.97kg	Yes	80 PLUS Bronze	240V dc
In Stock RS Better World RS PRO 600 W PC Power Supply 240V ac 12V RS stock no. 201-1839 Subtotal (1 unit) R 1 733,23(exc. VAT) R 1 733,23/unit Quantity		-	PC Power Supply	-	12V	-	54A	5	86mm	600W	150mm	140mm	-	-	-	-	-	-	-	TUV, CE	-	Yes	80 PLUS Bronze	240V ac
In Stock RS Better World RS PRO 500 W PC Power Supply 240V ac 12V RS stock no. 201-1837 Subtotal (1 unit) R 1 486,40(exc. VAT) R 1 486,40/unit Quantity		-	PC Power Supply	-	12V	-	29A	5	86mm	500W	150mm	140mm	-	-	-	-	-	-	-	CE, TUV	-	Yes	80 PLUS Bronze	240V ac
In Stock RS Better World RS PRO 750 W PC Power Supply 240V ac 12V dc RS stock no. 242-0547 Subtotal (1 unit) R 2 319,98(exc. VAT) R 2 319,98/unit Quantity		-	PC Power Supply	-	12V dc	-	20A	5	-	750W	150mm	-	-	-	85%	-	-	-	-	CB, c TUV US, RoHS, LVD, TUV, CE	-	Yes	80 PLUS Bronze	240V ac
In Stock RS Better World Seasonic 750 W ATX Power Supply 240V ac 12V dc RS stock no. 213-2368 Mfr. Part No. SSP-750RS Subtotal (1 unit) R 3 178,63(exc. VAT) R 3 178,63/unit Quantity	Seasonic	-	ATX Power Supply	-	12V dc	-	62A	5	160mm	750W	150mm	86mm	-	-	80%	-	-	-	-	CB, CCC, IEC, TUV	-	Yes	80 PLUS Gold	240V ac
In Stock RS Better World Seasonic 500 W ATX Power Supply 240V ac 12V dc RS stock no. 213-2363 Mfr. Part No. SSP-500ET2 Subtotal (1 unit) R 1 979,78(exc. VAT) R 1 979,78/unit Quantity	Seasonic	-	ATX Power Supply	-	12V dc	-	34A	5	140mm	500W	150mm	86mm	-	-	80%	-	-	-	-	IEC, TUV, CCC, CB	-	Yes	80 PLUS Bronze	240V ac
In Stock RS Better World Seasonic PC Power Supply 100V ac, 240 V ac 12V dc RS stock no. 136-6055 Mfr. Part No. SSP-300SFB Subtotal (1 unit) R 1 189,90(exc. VAT) R 1 189,90/unit Quantity	Seasonic	-	PC Power Supply	-	12V dc	-	20A	6	100mm	-	125mm	63.5mm	-	-	-	-	-	-	-	TUV, RCM, cUL, cTUVus, CCC, FCC, CE, BSMI, CB	-	Yes	80 PLUS Bronze	100, 240V ac
In Stock Mascot 145 W PC Power Supply 264V ac 24V dc RS stock no. 286-1731 Mfr. Part No. 2922240000 Subtotal (1 unit) R 2 534,14(exc. VAT) R 2 534,14/unit Quantity	Mascot	-	PC Power Supply	-	24V dc	-	6A	1	168mm	145W	100mm	-	-	-	89%	-	-20°C	40°C	-	EN 61000-6-1, EN 60065, EN 60950-1, EN 60601-1-2, EN 60601-1, EN 61000-6-3	690g	-	-	264V ac
In Stock RS Better World Seasonic PC Power Supply 240V ac 12V dc RS stock no. 136-6054 Mfr. Part No. SSP-300TBS Subtotal (1 unit) R 1 437,28(exc. VAT) R 1 437,28/unit Quantity	Seasonic	-	PC Power Supply	-	12V dc	-	20A	6	140mm	-	85mm	65mm	-	-	-	-	-	-	-	cUL, BSMI, RCM, CCC, CB, TUV, cTUVus, CE, FCC	-	Yes	80 PLUS Gold	240V ac
In Stock RS Better World Seasonic 600 W ATX Power Supply 240V ac 12V dc RS stock no. 213-2364 Mfr. Part No. SSP-600ES2 Subtotal (1 unit) R 2 090,18(exc. VAT) R 2 090,18/unit Quantity	Seasonic	-	ATX Power Supply	-	12V dc	-	46A	5	-	600W	-	-	-	-	80%	-	-	-	-	No	-	Yes	80 PLUS Bronze	240V ac
In Stock RS Better World Seasonic 400 W ATX Power Supply 240V ac 12V dc RS stock no. 213-2360 Mfr. Part No. SSP-400ES2 Subtotal (1 unit) R 1 732,47(exc. VAT) R 1 732,47/unit Quantity	Seasonic	-	ATX Power Supply	-	12V dc	-	30A	5	-	400W	-	-	-	-	80%	-	-	-	-	No	-	Yes	80 PLUS Bronze	240V ac
Temporarily out of stock RS Better World Seasonic 650 W ATX Power Supply 240V ac 12V dc RS stock no. 213-2366 Mfr. Part No. SSP-650RS Subtotal (1 unit) R 2 974,04(exc. VAT) R 2 974,04/unit Quantity	Seasonic	-	ATX Power Supply	-	12V dc	-	54A	5	160mm	650W	150mm	86mm	-	-	80%	-	-	-	-	CB, IEC, TUV, CCC	-	Yes	80 PLUS Gold	240V ac
In Stock RS Better World Seasonic PC Power Supply 100V ac, 240 V ac 12V dc RS stock no. 136-6052 Mfr. Part No. SSP-250SUB Subtotal (1 unit) R 1 369,93(exc. VAT) R 1 369,93/unit Quantity	Seasonic	-	PC Power Supply	-	12V dc	-	18A	6	150mm	-	81.5mm	40.5mm	-	-	85%	-	-	-	-	CE, EAC, UL, PSE, CB, SEMKO, CCC, BSMI, cTUVus, VDE, FCC, cUL, RCM, TUV	-	Yes	80 PLUS Bronze	100, 240V ac
In Stock RS Better World Seasonic 400 W ATX Power Supply 240V ac 12V dc RS stock no. 213-2361 Mfr. Part No. SSP-400ET2 Subtotal (1 unit) R 1 735,44(exc. VAT) R 1 735,44/unit Quantity	Seasonic	-	ATX Power Supply	-	12V dc	-	30A	5	140mm	400W	150mm	86mm	-	-	-	-	-	-	-	cTUVus TUV BSMI, CB cUL CCC, EMI/EMC: ATX 12 V v2.3, CE FCC RCM	-	Yes	80 PLUS Bronze	240V ac
Temporarily out of stock Nipron 350 W PC Power Supply 264V ac 12V dc RS stock no. 203-5325 Mfr. Part No. ePCSA-500P-X2C Subtotal (1 unit) R 8 583,13(exc. VAT) R 8 583,13/unit Quantity	Nipron	-	PC Power Supply	-	12V dc	-	500mA	5	86mm	350W	150mm	140mm	-	-	77%	-	0°C	60°C	-	UL, CE, CSA, IEC	1.8kg	-	-	264V ac