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header-product Power supply unit GIGABYTE P550B ATX 550 W, 80 PLUS Bronze, 120 mm fan, 20+4 pin, 6×SATA, 2×PCIe
46.49 €

Power supply unit GIGABYTE P550B ATX 550 W, 80 PLUS Bronze, 120 mm fan, 20+4 pin, 6×SATA, 2×PCIe

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GIGABYTE P550B 550 W ATX power supply Photo 1
GIGABYTE P550B 550 W ATX power supply Photo 2
GIGABYTE P550B 550 W ATX power supply Photo 3
GIGABYTE P550B 550 W ATX power supply Photo 4
GIGABYTE P550B 550 W ATX power supply Photo 5
GIGABYTE P550B 550 W ATX power supply Photo 1
GIGABYTE P550B 550 W ATX power supply Photo 2
GIGABYTE P550B 550 W ATX power supply Photo 3
GIGABYTE P550B 550 W ATX power supply Photo 4
GIGABYTE P550B 550 W ATX power supply Photo 5
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Power supply unit GIGABYTE P550B ATX 550 W, 80 PLUS Bronze, 120 mm fan, 20+4 pin, 6×SATA, 2×PCIe

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Power supply unit GIGABYTE P550B ATX 550 W, 80 PLUS Bronze, 120 mm fan, 20+4 pin, 6×SATA, 2×PCIe

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Short description

GIGABYTE P550B is an ATX power supply delivering 550 W total power with 80 PLUS Bronze efficiency and active PFC (power factor 0.9). It features a 120 mm HDB fan (top), non-modular cabling, 20+4 pin motherboard connector, 4+4 CPU connector, two 6+2 PCIe connectors, six SATA and three Molex ports. Designed for desktop PCs, it offers multiple protections, 16 ms hold-up time and MTBF 100,000 h for reliable system operation and easy component connectivity.
Available at price 46.49 €: 17 pcs.
Total available for order: 297 pcs.
Warranty: 3 Years
SKU: 3553756
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
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From 4.99 € (Weight: 2.02 kg)
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Unisend LV / Venipak Pickup LV / Venipak Locker LV / DPD Paku skapis / Omniva LV / Latvijas Pasts pakomāts / Latvijas Pasts nodaļa
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Product information

Description

The power supply is 80 PLUS Bronze certified, delivering up to 85% efficiency at 50% load to reduce energy waste, lower heat generation and decrease fan noise. It uses a single +12V rail for stable power delivery and compatibility with a wide range of PC hardware. The unit features flat cables to reduce clutter inside the case and improve airflow, and a 120mm hydraulic bearing fan with automatic speed control for balanced cooling and quiet operation. Multiple built-in protections and international safety certifications ensure stable and safe system operation.

Advantages

80 PLUS Bronze certification improves energy efficiency and reduces operating temperature. Flat cables simplify cable management and enhance internal airflow. The 120mm hydraulic bearing fan offers quiet operation and longer service life due to its robust bearing design. A single +12V rail provides consistent power output and easier cable connections. Comprehensive protection circuits (OCP, OTP, OVP, OPP, UVP, SCP) increase system reliability.

Key specifications

  • Certification: 80 PLUS Bronze (≈85% efficiency at 50% load)
  • Fan: 120 mm Silent Hydraulic Bearing (automatic speed control)
  • Cables: Flat cable design for improved airflow
  • Output topology: Single +12V rail
  • Protections: OCP, OTP, OVP, OPP, UVP, SCP
  • Designed for compatibility with common PC hardware and overclocking

How to use

Install the power supply into the PC case following the case and PSU mounting guidelines, connect the main 24‑pin ATX and 4/8‑pin CPU power connectors, and attach PCIe, SATA and peripheral connectors as required. Route the flat cables to minimize obstruction to fans and airflow. After connecting components, power on the system and verify stable operation. The fan speed will adjust automatically based on detected power and temperature conditions.

Recommendations

Use this PSU in cases with adequate ventilation and ensure cables are routed to maintain clear airflow paths. Verify that the unit’s wattage meets the total system power requirements, and keep drivers and firmware up to date for overall system stability.

Specifications

80 PLUS certification:
80 PLUS Bronze
Power supply unit (PSU) form factor:
ATX
Purpose: What the product is used for.
PC
Peripheral (Molex) power connectors (4-pin): White 4-pinned connector used to connect a peripheral to the power supply.
3
Motherboard power connector: The way in which the motherboard is connected to the power supply.
20+4 pin ATX
AC input voltage: The voltage of the AC electricity that is inputted into the product.
100 - 240
Total power: The total power that is needed by the device, or the total power produced by the device.
550 W
All features

Logistics data

Harmonized System (HS) code:
84733020

Weight & dimensions

Height: The measurement of the product from head to foot or from base to top.
86 mm
Depth: The distance from the front to the back of something.
140 mm
Width: The measurement or extent of something from side to side.
150 mm

Design

On/off switch: The button which is pressed to switch the device on or off.
Yes
Fan location:
Top
Number of fans: The quantity of fans (apparatus with rotating blades that creates a current of air for cooling or ventilation).
1 fan(s)
Fan diameter: The size of the fan, measured by the distance from one side of the fan to the other, via a straight line going through the middle of the fan.
120 mm
Cooling type: The method used to cool the device or to cool the air around the device.
Active
Product colour: The colour e.g. red, blue, green, black, white.
Black

Performance

Mean time between failures (MTBF): Statistical model used to indicate product/mechanism reliability; expressed in hours and percentage of duty cycle. This number (in hours) does not indicate the mean time before failure for a single unit/mechanism.
100000 h
Bearing technology:
HDB
ATX version: ATX (Advanced Technology eXtended) is a motherboard form factor specification developed by Intel in 1995. The specification defines the key mechanical dimensions, mounting point, I/O panel, power and connector interfaces between a computer case, a motherboard and a power supply. There are many versions of ATX including ATX12V 1.x and ATX12V v2.3.
2.31
80 PLUS certification:
80 PLUS Bronze
Power supply unit (PSU) form factor:
ATX
Purpose: What the product is used for.
PC

Ports & interfaces

Cabling type:
Non-Modular
PCI Express connector:
Yes
Floppy disk drive connector:
Yes
Floppy drive power connector:
1
ATX power connector (20+4 pin):
Yes
CPU power cable length:
600 mm
CPU power connector (4+4 pin):
Yes
PCI Express power cable length:
550 mm
PCI Express power connectors (6+2 pin):
2
Peripheral (Molex) power cable length:
500
Peripheral (Molex) power connectors (4-pin): White 4-pinned connector used to connect a peripheral to the power supply.
3
SATA power cable length:
500
Number of SATA power connectors:
6
Motherboard power cable length:
550 mm
Motherboard power connector: The way in which the motherboard is connected to the power supply.
20+4 pin ATX

Power

Power protection features: Features that protect the device against power problems e.g. overload.
Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage
Efficiency:
85 %
Hold time:
16 ms
Max output current (+5Vsb):
3 A
Max output current (-12V):
0.3 A
Max output current (+5V):
15 A
Max output current (+12V):
43.5 A
Max output current (+3.3V):
18 A
Combined power (+5Vsb):
15 W
Combined power (-12V):
3.6 W
Combined power (+5V):
108 W
Combined power (+12V):
522 W
Combined power (+3.3V):
108 W
Power Factor Correction (PFC) type:
Active
Power factor:
0.9
Input current:
8 - 4
AC input frequency:
50 - 60
AC input voltage: The voltage of the AC electricity that is inputted into the product.
100 - 240
Total power: The total power that is needed by the device, or the total power produced by the device.
550 W

Description

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Product comparison

The GIGABYTE P550B power supply is compared with several alternative models of similar power and purpose, including GIGABYTE P650G, ASRock CL-550B Challenger, DeepCool PK750D, XPG PROBE 600 BRONZE, and XPG Pylon 550 W. All units share an ATX form factor, active PFC, non-modular cabling, and are designed for standard desktop PCs. The main differences lie in total power output, the number of connectors for graphics cards and peripherals, and minor technical details.

⚙️ The table below compares characteristics such as total power output, 80 PLUS certification, PCIe and SATA connector counts, and practical component connectivity features.

ParameterGIGABYTE P550BGIGABYTE P650GASRock CL-550B ChallengerDeepCool PK750DXPG PROBE 600 BRONZEXPG Pylon 550 WPractical conclusion
Form factorATXATXATXATXATXATXAll models are fully compatible with standard PC cases.
Total power550 W650 W550 W550 W600 W550 WThe 600–650 W models offer more headroom for demanding hardware.
PCIe connectors2× (6+2 pin)4× (6+2 pin)2× (6+2 pin)4× (6+2 pin)2× (6+2 pin)2× (6+2 pin)Options with four PCIe connectors provide better compatibility with power-hungry graphics cards.
SATA connectors664855DeepCool provides the highest number of connectors for storage drives.

◎ The table below evaluates how well each product suits different use cases and buyer needs for system building.

Use caseRecommended productWhy
Basic office or entry-level gaming PCGIGABYTE P550BProvides sufficient power (550 W) and the necessary cable selection for standard desktop components.
System with a higher-end graphics cardGIGABYTE P650GOffers increased output (650 W) and four PCIe connectors for demanding GPUs.
PC with multiple storage drivesDeepCool PK750DDelivers an expanded set of SATA interfaces (8 connectors) for multiple hard drives and SSDs.
The GIGABYTE P550B is a well-balanced 550 W power supply designed for standard office or entry-level desktop systems. Compared to alternatives like the GIGABYTE P650G and XPG PROBE 600 BRONZE, it has a lower power ceiling, but it fully covers the requirements of a typical modern single-GPU build while offering reliable protection and a standard cable layout. Choose the GIGABYTE P550B if you need a dependable power source for a moderate-load system without paying for extra capacity.
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Stock data
Warehouse Stock Delivery to the store Store Price
BT19 17 Tomorrow Best delivery
Fast shipping
46.49 €
EU3 16 29.09.2026
47.49 €
EU86 57 29.09.2026
47.49 €
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Available only for legal entities
Warehouse Stock Delivery to the store Store Price
WH109 66 13.10.2026
51.49 €
EU6 2 29.09.2026
61.99 €
Fast shipping
46.49 €
Stock: 17
Delivery Date: Tomorrow Best delivery
Warehouse: BT19
47.49 €
Stock: 16
Delivery Date: 29.09.2026
Warehouse: EU3
47.49 €
Stock: 57
Delivery Date: 29.09.2026
Warehouse: EU86
Fast shipping
47.99 €
Stock: 3
Delivery Date: Thursday
Warehouse: BT5
50.99 €
Stock: 2
Delivery Date: Friday
Warehouse: EU2
51.49 €
Stock: 46
Delivery Date: 29.09.2026
Warehouse: WH356
51.49 €
Stock: 64
Delivery Date: 29.09.2026
Warehouse: WH94
51.99 €
Stock: 4
Delivery Date: 29.09.2026
Warehouse: EU16
52.99 €
Stock: 20
Delivery Date: 29.09.2026
Warehouse: EU85
Available only for legal entities
51.49 €
Stock: 66
Delivery Date: 13.10.2026
Warehouse: WH109
61.99 €
Stock: 2
Delivery Date: 29.09.2026
Warehouse: EU6

Customer reviews

Customer questions

FAQ

How much does the GIGABYTE P550B 550 W ATX power supply cost, and is it available for purchase?

The price is 46.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 297 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on Tomorrow at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All GIGABYTE products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized GIGABYTE service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: 80 plus certification, power supply unit (psu) form factor, purpose, peripheral (molex) power connectors (4-pin), motherboard power connector, ac input voltage, total power, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

Where can I download the instructions for GIGABYTE P550B 550 W ATX power supply?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.
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