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

**URL:** https://aio.lv/en/product--seasonic-srp-cbc851-a5a51jf--11661021
**Data updated:** 2025-12-31 11:26 (EET)
**Category:** Power Supplies (PSU)
**Manufacturer:** SEASONIC
**Manufacturer code:** SRP-CBC851-A5A51JF
**EAN:** 4711173879459
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 62.49 €
**Prices and availability valid until:** 2026-08-11 23:59
**Price without VAT (21%):** 51.64 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--seasonic-srp-cbc851-a5a51jf--11661021

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.07.2026 | free |
| Pickup points | 30.07.2026 | 1.89 EUR |
| Courier delivery to door | 30.07.2026 | 4.99 EUR |

## Summary 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.

## Long 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

### Power

| Feature | Value |
|---|---|
| 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

| Feature | Value |
|---|---|
| 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

| Feature | Value |
|---|---|
| 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

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

### Certificates

| Feature | Value |
|---|---|
| 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

| Feature | Value |
|---|---|
| Sustainability certificates | ENERGY STAR |

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 86 mm |
| Width | 150 mm |
| Depth | 140 mm |

### Operational conditions

| Feature | Value |
|---|---|
| Operating temperature (T-T) | 0 - 40 |

## 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. More information about warranty service: https://aio.lv/en/warranty

### 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.

## Image

https://aio.lv/img/cache/product/11661021/66968976_large.webp