Name: GIGABYTE P550SS power supply unit 550 W 20+4 pin ATX ATX Black
Brand: Gigabyte
SKU: cmnozh760d6dpnst2kzxgf64w
Availability: InStock

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Description

Ensure reliable and efficient power delivery with GIGABYTE power supplies. Designed for peak performance and durability, our PSUs offer stable and consistent energy to power your high-performance systems. With advanced protections and high-quality components, GIGABYTE power supplies provide the confidence you need for seamless, uninterrupted computing experiences.

Specifications

Total power	550 W
AC input voltage	155-240 V
AC input frequency	50/60 Hz
Input current	6.3 A
Power Factor Correction (PFC) type	Active
Combined power (+3.3V)	100 W
Combined power (+12V)	549.6 W
Combined power (+5V)	100 W
Combined power (-12V)	3.6 W
Combined power (+5Vsb)	15 W
Max output current (+3.3V)	20 A
Max output current (+12V)	45.8 A
Max output current (+5V)	20 A
Max output current (-12V)	0.3 A
Max output current (+5Vsb)	3 A
Hold time	16 ms
Efficiency	90%
Power Good signal delay range	100 - 150 ms
Power protection features	Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage
Motherboard power connector	20+4 pin ATX
Motherboard power cable length	60 cm
Number of SATA power connectors	5
Peripheral (Molex) power connectors (4-pin)	4
PCI Express power connectors (6+2 pin)	2
CPU power connector (4+4 pin)	Yes
ATX power connector (20+4 pin)	Yes
Floppy drive power connector	2
Floppy disk drive connector	Yes
PCI Express connector	Yes
Cabling type	Non-Modular
80 PLUS certification	80 PLUS Silver
Purpose	PC
Power supply unit (PSU) form factor	ATX
ATX version	3.1
Bearing technology	Ball bearing
Mean time between failures (MTBF)	100000 h
Product colour	Black
Cooling type	Active
Fan diameter	12 cm
Number of fans	1 fan(s)
Fan location	Top
On/off switch	Yes
Width	140 mm
Depth	150 mm
Height	86 mm
Weight	1.86 kg
Package width	254 mm
Package depth	206 mm
Package height	117 mm
Package weight	2.32 kg
Package type	Box
Warranty period	3 year(s)

Full specifications

Marque	Gigabyte
Référence fabricant	gpp550ss
EAN	4719331554187

The GIGABYTE P550SS power supply unit 550 W 20+4 pin ATX ATX Black in its market context in 2026

Choosing the GIGABYTE P550SS power supply unit 550 W 20+4 pin ATX ATX Black means opting for the expertise of Gigabyte in the Informatique category. Its price starting from £50.27 makes it a serious option on the market. Buyers interested in this brand also look at the GIGABYTE B850 AORUS ELITE WIFI7 ICE Motherboard - AMD Ryzen 9000 Series CPUs, 14+2+2 Phases Digital VRM, up to 8200MHz DDR5 (OC), 1xPCIe 5.0 + 2xPCIe 4.0 M.2, 2.5 LAN, WIFI 7, USB 3.2 Gen 2x2 to complete their comparison. On Compiral, all displayed prices are updated regularly and retailers are selected for their reliability and quality of customer service.

Gigabyte: what this model offers

What buyers remember about the GIGABYTE P550SS power supply unit 550 W 20+4 pin ATX ATX Black: consistent quality, intuitive use and a price that stays within market norms for this level of performance. The positioning of Gigabyte on the Informatique segment ensures access to spare parts and a structured after-sales service, which matters greatly in the long run. A solid choice in 2026, whether for a new purchase or to replace a failing device. Also discover the GIGABYTE B650M D3HP AX Motherboard - AMD Ryzen 9000 Series CPUs, 5+2+2 Phases VRM, up to 8000MHz DDR5 (OC), 2xPCIe 4.0 M.2, WIFI 6E, 2.5GbE LAN, USB 3.2 Gen 1 from the same brand for a second level of comparison.

The strengths that really make a difference

What truly differentiates the GIGABYTE P550SS power supply unit 550 W 20+4 pin ATX ATX Black from other products in the Informatique category comes down to a few concrete points: the build quality typical of Gigabyte, its availability from many retailers and accessible after-sales support. These criteria, often decisive for buyers, favour this model over alternatives on the market in 2026. Compare with the GIGABYTE B850 AORUS ELITE WIFI7 ICE Motherboard - AMD Ryzen 9000 Series CPUs, 14+2+2 Phases Digital VRM, up to 8200MHz DDR5 (OC), 1xPCIe 5.0 + 2xPCIe 4.0 M.2, 2.5 LAN, WIFI 7, USB 3.2 Gen 2x2 if you wish to explore other models from the brand.

What you need to know before buying

Before buying the GIGABYTE P550SS power supply unit 550 W 20+4 pin ATX ATX Black, check the following points: stock availability at your chosen retailer, the returns policy, warranty period and delivery charges. These details are accessible from our offers table at the top of this page. Gigabyte generally offers a well-structured after-sales network for the Informatique category.

Market price ranges in 2026

Range	Indicative price	For whom	What you get
Entry-level	Under 391990 £	Tight budget, occasional use	Essential features, reliable for beginners
Mid-range	391990 £ to 914640 £	Regular daily use	Good value for money, solid performance
High-end	Over 914640 £	Demanding users	The best of the category, all advanced features

Comparing prices before buying the GIGABYTE P550SS power supply unit 550 W 20+4 pin ATX ATX Black can save you between £10 and £40 depending on the retailer and the time of year. Use Compiral to never overpay for your online purchases. The 3 offers listed on this page all come from verified retailers with sales conditions compliant with consumer protection law.

Frequently asked questions about GIGABYTE P550SS power supply unit 550 W 20+4 pin ATX ATX Black

Is there a refurbished version of the GIGABYTE P550SS power supply unit 550 W 20+4 pin ATX ATX Black?

Refurbished versions of the GIGABYTE P550SS power supply unit 550 W 20+4 pin ATX ATX Black may be available from certain Compiral partner retailers. These refurbished products allow you to save between 20% and 40% compared to the new price while still benefiting from a warranty. Check availability in our offers table and review the warranty conditions offered by the retailer.

When do prices for the GIGABYTE P550SS power supply unit 550 W 20+4 pin ATX ATX Black drop during the year?

Prices for the GIGABYTE P550SS power supply unit 550 W 20+4 pin ATX ATX Black typically drop during Black Friday (November), the January sales and the summer sales (July). Promotional deals are also common around Cyber Monday and the holiday season. Our price history lets you spot trends and assess whether a price drop is likely soon in the Informatique category.

Is delivery free for the GIGABYTE P550SS power supply unit 550 W 20+4 pin ATX ATX Black at all retailers?

Free delivery is not guaranteed for the GIGABYTE P550SS power supply unit 550 W 20+4 pin ATX ATX Black at every retailer. Some include it in their price, others charge separately. On Compiral, use the free delivery filter to display only offers with free postage. The total price shown in our table always includes delivery costs for a true cost comparison.

How do I return the GIGABYTE P550SS power supply unit 550 W 20+4 pin ATX ATX Black if I am not satisfied?

You have a 14-day right of withdrawal for any online purchase, applicable to the GIGABYTE P550SS power supply unit 550 W 20+4 pin ATX ATX Black regardless of the retailer. Precise return conditions vary by retailer: check their returns policy before buying. Statutory consumer rights protect you in the event of a defect discovered after delivery.

Is the GIGABYTE P550SS power supply unit 550 W 20+4 pin ATX ATX Black worth its price in 2026?

In 2026, the GIGABYTE P550SS power supply unit 550 W 20+4 pin ATX ATX Black is listed from £50.27 at our partner retailers. This price is consistent with the positioning of Gigabyte in the Informatique category. To judge whether this price is currently attractive, check the price history on our product page. Also compare the total price including delivery to avoid any surprises at checkout.