Main product

Overview


CORE BC – Power Made Simple

The Seasonic CORE BC Series delivers reliable performance and modern ATX 3.1 compliance at an essential value. Designed for everyday builders and gamers, it embodies Seasonic’s trusted quality in a compact 140 mm design with a durable scratch-resistant finish.

With 80 PLUS® Bronze efficiency, Smart and Silent Fan Control (S2FC), and a 120 mm HDB fan, it ensures cool, quiet, and stable operation. The CORE BC-750 and CORE BC-850 include a 12V-2×6 PCIe Gen 5.1 cable, ready for the latest GPUs, while the CORE BC-650 meets all ATX 3.1 requirements with traditional connectors.

Built on decades of engineering excellence, the CORE BC Series delivers the quiet efficiency, reliability, and durability that define every Seasonic power supply.

Next-Gen and Legacy GPU Cable
Includes native 12V-2x6 and 2× 8-pin cables for maximum compatibility

S2FC - Intelligent Fan Control Technology
The Smart and Silent Fan Control (S2FC) system intelligently regulates the power supply’s fan speed to achieve the ideal balance between cooling efficiency and silent operation. By dynamically adjusting the fan curve according to temperature, it ensures that your system remains quiet during low-to-medium usage and effectively cooled when performance demands increase.




At-a-glance


  • 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

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

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




Reasons to buy

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

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

Specification

Technical Description: Seasonic CORE BC-650 power supply unit 650 W 20+4 pin ATX ATX Black
Certificates
Certification:
CE, CB, CCC, cTUVus, TUV, BSMI, EAC, UKCA, Energy Star, RoHS, REACH, WEEE, ErP Lot 6
Compliance certificates:
BSMI, CB, CCC, CE, EAC, REACH, RoHS, UKCA, WEEE, cTUVus

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

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.
12 cm
Cooling type:The method used to cool the device or to cool the air around the device.
Active
Product colour:
Black

Operational conditions
Operating temperature (T-T):The minimum and maximum temperatures at which the product can be safely operated.
0 - 40 °C

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:
Sleeve
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
ATX power connector (20+4 pin):
Yes
CPU power cable length:
60 cm
CPU power connector (4+4 pin):
Yes
PCI Express power connectors (6+2 pin):
4
EPS power connector (4+4 pin):
Yes
Peripheral (Molex) power connectors (4-pin):White 4-pinned connector used to connect a peripheral to the power supply.
3
Number of SATA power connectors:
6
Motherboard power cable length:
55 cm
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, Short circuit
Max output current (+5Vsb):
20 A
Max output current (-12V):
0.3 A
Max output current (+5V):
2.5 A
Max output current (+12V):
54 A
Max output current (+3.3V):
20 A
Combined power (+5Vsb):
12.5 W
Combined power (-12V):
3.6 W
Combined power (+12V):
648 W
Combined power (+3.3V):
100 W
Input current:
9 - 4.5 A
AC input frequency:
50/60 Hz
AC input voltage:The voltage of the AC electricity that is inpitted into the product.
100 - 240 V
Total power:The total power that is needed by the device, or the total power produced by the device.
650 W

Technical details
Sustainability certificates:
ENERGY STAR

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

Product details

SRP-CBC651-A5A51JF Seasonic 4711173879435

Seasonic CORE BC-650 power supply unit 650 W 20+4 pin ATX ATX Black

£67.99 and In stock

SKU: SRP-CBC651-A5A51JF

Seasonic CORE BC-650 power supply unit 650 W 20+4 pin ATX ATX Black

Quick Code: Q3104033 MPN: SRP-CBC651-A5A51JF
£67.99

Quantity:
In Stock