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header-product Power supply unit Seasonic CORE BC-850 ATX 3.1 850 W, 20+4 pin ATX, 80 PLUS Bronze, black
62.49 €

Power supply unit Seasonic CORE BC-850 ATX 3.1 850 W, 20+4 pin ATX, 80 PLUS Bronze, black

Fast delivery available
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Power supply unit Seasonic CORE BC-850 ATX 3.1 850 W, 20+4 pin ATX, 80 PLUS Bronze, black

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Short description

Seasonic CORE BC-850 is an ATX 3.1 power supply unit delivering 850 W of continuous power for desktop PCs. It features a 20+4 pin ATX motherboard connector, 55 cm motherboard cable and 60 cm CPU cable, active 120 mm cooling fan and 80 PLUS Bronze efficiency. Suitable for standard tower builds, offers stable power, multiple certifications and black finish.
Available at price 62.49 €: 27 pcs.
Total available for order: 1118 pcs.
Warranty: 2 Years
SKU: 11661021
Manufacturer: SEASONIC
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Pick-up points

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Cost

1.89 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
27.07.2026 {{selectedOffer.officeDeliveryString}}
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30.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 1.00 kg)
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Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Latvijas Pasts nodaļa
30.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
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Product information

Description

The Seasonic CORE BC-850 is an ATX 3.1 power supply delivering 850 W of continuous power in a compact 140 mm housing with a durable scratch-resistant black finish. Designed for everyday builders and gamers, the unit features 80 PLUS Bronze efficiency, an active 120 mm HDB cooling fan and Smart and Silent Fan Control (S2FC) to balance quiet operation with effective cooling. The CORE BC-850 includes native 12V-2x6 and 2×8 PCIe cables for broad GPU compatibility and standard 20+4 pin ATX motherboard connectivity.

Advantages

The CORE BC-850 combines Seasonic engineering with ATX 3.1 compliance to provide stable, reliable power for standard desktop builds. Its 80 PLUS Bronze certification improves energy efficiency under typical loads, while S2FC adjusts fan speed dynamically to reduce noise during light use and increase cooling when required. The included next‑gen and legacy GPU cables simplify compatibility with current and older graphics cards.

Suitable for

  • Standard mid‑tower and full‑tower desktop PCs
  • Everyday gaming systems and mainstream builds
  • Upgrades requiring ATX 3.1 compatibility and PCIe Gen 5.1 GPU cables
  • Systems that prioritize a balance of quiet operation and reliable cooling

Key specifications

  • Total power: 850 W
  • Input: 100 - 240 V, 50/60 Hz
  • Motherboard connector: 20+4 pin ATX
  • 80 PLUS Bronze efficiency
  • Fan: 120 mm HDB (active)
  • Color: Black

How to use

Install the CORE BC-850 into a compatible ATX case following the motherboard and case manufacturer instructions. Connect the 20+4 pin ATX cable to the motherboard and attach the provided CPU and PCIe cables to the appropriate connectors on the motherboard and graphics card(s). Ensure all connections are secure and routed to avoid obstructing airflow. After connecting power to the PSU and to the wall outlet, power on the system and verify stable operation and fan behavior under different loads.

Usage recommendations

Use the native 12V-2x6 and 2×8 PCIe cables included with the CORE BC-850 for maximum GPU compatibility; avoid adapters unless specified by the GPU manufacturer. Place the PSU with sufficient ventilation and keep dust buildup minimal to maintain cooling efficiency and long-term reliability.

Specifications

Total power:
850 W
Motherboard power connector:
20+4 pin ATX
80 PLUS certification:
80 PLUS Bronze
Fan diameter:
120 mm
Product colour:
Black
All features

Power

Total power:
850 W
Power protection features:
Short circuit, Over voltage, Over power, Over current
Combined power (+3.3V):
100 W
Combined power (+12V):
840 W
Combined power (-12V):
3.6 W
Combined power (+5Vsb):
12.5 W
Max output current (+3.3V):
20 A
Max output current (+12V):
70 A
Max output current (+5V):
20 A
Max output current (-12V):
0.3 A
Max output current (+5Vsb):
2.5 A
Input current:
11 - 5.5
AC input frequency:
50/60
AC input voltage:
100 - 240

Ports & interfaces

Motherboard power connector:
20+4 pin ATX
PCI Express connector:
Yes
Number of SATA power connectors:
6
Peripheral (Molex) power connectors (4-pin):
3
ATX power connector (20+4 pin):
Yes
CPU power connector (4+4 pin):
Yes
PCI Express power connectors (6+2 pin):
4
Cabling type:
Non-Modular
Motherboard power cable length:
550 mm
CPU power cable length:
600 mm
EPS power connector (4+4 pin):
Yes

Performance

Purpose:
PC
80 PLUS certification:
80 PLUS Bronze
Mean time between failures (MTBF):
100000 h
Bearing technology:
Sleeve
Power supply unit (PSU) form factor:
ATX

Design

Fan diameter:
120 mm
Number of fans:
1 fan(s)
Cooling type:
Active
Fan location:
Top
On/off switch:
Yes
Product colour:
Black

Certificates

Certification:
CE, CB, CCC, cTUVus, TUV, BSMI, EAC, UKCA, Energy Star, RoHS, REACH, WEEE, ErP Lot 6
Compliance certificates:
BSMI, cTUVus, WEEE, UKCA, RoHS, REACH, EAC, CE, CCC, CB

Technical details

Sustainability certificates:
ENERGY STAR

Weight & dimensions

Height:
86 mm
Width:
150 mm
Depth:
140 mm

Operational conditions

Operating temperature (T-T):
0 - 40

Description

Machine translation. Load original

Reasons to buy

Optimized for PCIe 5.1 GPUs

The CORE BC ATX 3.1 power supply features a native 12V-2x6 cable designed for the latest PCIe 5.1 graphics cards. With support for up to 600 W of power delivery, this cable ensures safe and stable performance for NVIDIA RTX 40 and 50 Series and future high-end GPUs. Enjoy a clean, efficient setup that’s fully compliant with ATX 3.1 and PCIe 5.1 standards.

- Fully compliant with PCIe 5.1 and ATX 3.1 standards
- Up to 600W of power
- The CORE BC-650 complies with ATX 3.1 specifications but is supplied with traditional PCIe connectors instead of a 12V-2x6 cable.

Optimized for PCIe 5.1 GPUs

Full Support for Legacy GPUs

To ensure compatibility with older GPUs, the CORE BC ATX 3.1 includes a 2×8-pin PCIe cable. It delivers reliable power and works seamlessly with graphics cards from previous generations. This cable makes it easy to upgrade your PSU without changing your GPU—ideal for users who want next‑generation power while keeping legacy support.

- Ideal for graphics cards from previous generations
- Easy to install for users upgrading from older systems

Full Support for Legacy GPUs

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Stock data
Warehouse Stock Delivery to the store Store Price
WH155 27 27.07.2026 62.49 € Best price
WH334 4 27.07.2026 71.49 €
EU16 377 27.07.2026 73.99 €
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Available only for legal entities
Warehouse Stock Delivery to the store Store Price
WH345 572 27.07.2026 67.49 €
WH109 19 10.08.2026 83.49 €
62.49 €
Stock: 27
Delivery Date: 27.07.2026
Warehouse: WH155
71.49 €
Stock: 4
Delivery Date: 27.07.2026
Warehouse: WH334
73.99 €
Stock: 377
Delivery Date: 27.07.2026
Warehouse: EU16
75.99 €
Stock: 100
Delivery Date: Tuesday Best delivery
Warehouse: BT19
93.49 €
Stock: 19
Delivery Date: 27.07.2026
Warehouse: WH337
Available only for legal entities
67.49 €
Stock: 572
Delivery Date: 27.07.2026
Warehouse: WH345
83.49 €
Stock: 19
Delivery Date: 10.08.2026
Warehouse: WH109

Customer reviews

Customer questions

FAQ

How much does the Seasonic CORE BC-850 ATX 3.1 850 W PSU cost, and is it available for purchase?

The price is 62.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1118 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 27.07.2026 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: 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 SEASONIC 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 SEASONIC 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: total power, motherboard power connector, 80 plus certification, fan diameter, product colour, 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 Seasonic CORE BC-850 ATX 3.1 850 W PSU?

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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