Seasonic B12-BC 550W Black Computer Power Supply Full Wired 80 Plus Bronze

Key features:

Size: ATX
Type: Active PFC
Fan Dimension: 120 mm
Dimensions: 150mm x 190mm x 86mm

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Description

The B12 BC series is available in the standard ATX form factor and in power levels that are most common for a PC system. The Seasonic B12 BC achieves the 80 PLUS® Bronze standard by providing at least 82%, 85%, and 82% energy efficiency at 20%, 50%, and 100% operating loads, respectively. This efficiency, combined with active power factor correction, allows the B12 BC series power supplies to reduce energy waste, which translates into energy cost savings for their users. In addition to high efficiency, the B12 BC units use the LLC resonant converter design and the industry-leading Smart and Silent Fan Control (S2FC).

80 Plus Bronze Certification

The 80 PLUS Bronze certification indicates that a large percentage of electrical energy is converted into useful energy, resulting in less heat loss and more savings on the electricity bill. The 80 PLUS Bronze certification guarantees efficiency greater than 82%, 85%, and 82% at operating loads of 20%, 50%, and 100%, respectively. The Sea Sonic B12 BC series is an economical choice with high performance and great built-in value.

Silent Cooling

The intelligent thermal circuit is designed to find the optimal balance between the need to cool the components and the need to operate the power supply in the quietest possible manner.

Connections

1x ATX 20 + 4-pin motherboard power connector.
2x EPS/ATX12V 8 Pin (4+4) CPU power connectors
3x PCIe 6+2 graphics card power connectors, to take advantage of modern GPUs in combination with your PC's capabilities
3x SATA power connectors for SSD or HDD hard drives
1x 4-pin Molex connector for connecting additional peripherals
1x floppy power connector

System Protection

Protects your PC from over power (OPP), over voltage (OVP), under voltage (UVP), over current (OCP), over temperature (OTP), and short circuit (SCP).

Loads

Operating Voltage: 100-240V

Maximum Load:

Line Current +3.3 V: 15A
Line Current +5 V: 15A
Line Current +12 V: 70A
Line Current -12 V: 0.3A
Line Current +5 Vsb: 3A

Compatibility with Graphics Cards & Processors

Nvidia

AMD

Manufacturer

Seasonic - Power Supplies Seasonic

Specifications

Power: 550 W

Size: ATX

Modularity: Full Wired

Certification: 80 Plus Bronze

Fan Dimension: 120 mm

Power Protection: Over Current Protection (OCP), Over Power Protection (OPP), Over Voltage Protection (OVP), Short Circuit Protection (SCP)

Extra: -

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

Reviews

4,6

4.6

Review this product

1
2 out of 3 members found this review helpful
Engineer-at-work
2025-01-31
This review is about the power: 850 W
WARNING! I almost caught fire! The power supply refused to deliver power properly, the LEDs on the CPU cooler were flickering, indicating the presence of a catastrophic problem - and the second time I tried to open it, it started to emit smoke! All this after just 1 year of very light use! By far the worst power supply after 18 years of building computers for myself and friends! STAY AWAY!!!!

Another user reports that it broke after 9 months... don't go by the brand just because it's Seasonic. These power supplies are unacceptable!
Translated from Greek ·
- Number of connections
- Moderate noise
- Cable management
- Quality construction
- Durability
- Value for money
- Operational stability
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3
4 out of 5 members found this review helpful
Jean_Baptiste_Perrin
2024-02-09
Verified purchase
This review is about the power: 750 W
It's a fairly good price quality ratio for such a power supply. At this price, I don't think you can find much better in Greece. However, unfortunately, mine failed and died after 9 month. I understand these things happen but I wouldn't call that reliable. Of course it was under warranty but here comes the catch. It takes absolutely ages to get replaced because availability of the product isn't there. Needless to say, if I had to buy a new one I would get something maybe less fancy but easily available. A month without a properly functioning PC isn't acceptable.
- Silent
- Quality construction
- Value for money
- Number of connections
- Cable management
- Durability
- Operational stability
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5
1 out of 1 members found this review helpful
DrStaV
2024-02-03
Verified purchase from Techstores
Replaced a Corsair 450 power supply that died after 8 years. I have never used this brand before, but I have heard great things. Only time will tell its reliability. I had no issues with the quality of the cables and their length, they are very high-quality.
Translated from Greek ·
- Cable management
- Silent
- Quality construction
- Value for money
- Number of connections
- Operational stability
Did you find this review helpful?
5
1 out of 1 members found this review helpful
November_71
2022-10-05
Verified purchase
This review is about the power: 750 W
At first glance, it appears to be of good quality, of course, like all full wired ones, it is a bit difficult to manage the cables.
Translated from Greek ·
- Silent
- Quality construction
- Value for money
- Number of connections
- Operational stability
- Cable management
Did you find this review helpful?
5
1 out of 2 members found this review helpful
I_Love_Game
2022-08-17
Verified purchase
This review is about the power: 750 W
Very good so far, everything is going perfectly with Ryzen 5 3600x and with an Asus Dual RX 6500xt, 4GB RAM, 16GB 3733MHZ, with 2 M.2 hard drives, each one 480GB
Translated from Greek ·
- Cable management
- Silent
- Quality construction
- Durability
- Value for money
- Number of connections
- Operational stability
Did you find this review helpful?
5
5 out of 7 members found this review helpful
valantis1926
2021-08-26
Very good power supply with 80 Plus Bronze certification for around 55€. I have been using it for almost 6 months with a Ryzen 5 3rd gen and a 1060 6GB, and it has never disappointed me. I live in an area with frequent power outages and have never encountered any issues. Its cables are all black, not tricolored like other options in this price range. 5/5
Translated from Greek ·
- Cable management
- Silent
- Quality construction
- Durability
- Value for money
- Number of connections
- Operational stability
Did you find this review helpful?
5
Κοκκινέλης Θεόδωρος
2025-02-06
Verified purchase
This review is about the power: 750 W
If you are not obsessed with cable management, a very affordable and reliable solution.
Translated from Greek ·
Did you find this review helpful?
5
Nick_Maverick
2024-08-19
Verified purchase
This review is about the power: 850 W
At the price level, it's the best for what it does.
Translated from Greek ·
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5
CREATOR.STYLES
2025-02-04
Verified purchase
This review is about the power: 850 W
- Cable management
- Silent
- Quality construction
- Durability
- Value for money
- Number of connections
- Operational stability
5
George_Kriezis6114
2024-12-25
Verified purchase
This review is about the power: 650 W
5
Marios_Karathanasopoulos
2024-12-12Expert user
Verified purchase
This review is about the power: 750 W
5
Manos_Assargiotis
2024-12-11
Verified purchase
This review is about the power: 850 W
- Silent
- Quality construction
- Durability
- Value for money
- Number of connections
- Operational stability
- Cable management
5
eygenis
2024-11-06
Verified purchase
This review is about the power: 750 W
5
Jon_Duv
2024-10-03
Verified purchase
5
spiros_georgantzis
2024-09-20
Verified purchase
This review is about the power: 650 W
- Cable management
- Silent
- Quality construction
- Durability
- Value for money
- Number of connections
- Operational stability
4
GeoBiG
2024-09-14
Verified purchase
This review is about the power: 850 W

Seasonic B12-BC 550W Black Computer Power Supply Full Wired 80 Plus BronzeSku code: 29193501

Power:550 W

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