energy
Total power: 850 W
AC input voltage: 100-240 V
AC input frequency: 50/60 Hz
Input current: 11 - 5.5 A
Combined power (+3.3 V): 100 W
Combined power (+12V): 840 W
Combined current (-12V): 3.6 W
Combined power (+5Vsb): 15 W
Max. output current (+3.3 V): 20 A
Max. output current (+12V): 70 A
Maximum output current (+5V): 20 A
Max. output current (-12V): 0.3 A
Max. output current (+5Vsb): 3 A
Energy protection functions: overload, undervoltage, exceeding the permissible total voltage, overvoltage, short circuit
Connections and interfaces
Motherboard connector: 24-pin ATX
Motherboard power cable length: 61 cm
Number of SATA power connectors: 2
Number of PATA power connectors: 2
Number of 4-pin Molex connectors: 2
Cable type: Fully modular
Services
80 Plus certification: 80 PLUS Gold
Purpose: computer
Power supply unit (PSU) form factor: ATX
ATX version: 3.1
Mean Time Between Failures (MTBF): 100,000 hours
design
Product color: Black
Cooling: Active
Fan diameter: 12 cm
Number of fans: 1 fan
Feature: On/Off switch
Working conditions
Operating temperature: 0 - 50 °C
Scope of delivery
Cables included: AC, Peripheral (Molex) to SATA 3.3, CPU, PCIe, SATA
Certificates
Conformity certificates: BSMI, CB, CCC, CE, EAC, REACH, RoHS, UKCA, WEEE, cTUVus
Certificates: OCP, OPP, OTP, SCP, OVP, UVP, BSMI, C-tick, CB, CCC, CE, cTUVus, EAC, FCC, TUV, UKCA, ErP Lot 6, Energy Star, REACH, RoHS, WEEE
Weight and dimensions
Width: 150 mm
Depth: 140 mm
Height: 86 mm
Packaging information
Packaging type: Box
Technical details
Sustainability certifications: ENERGY STAR


The text is machine translated.

It is important to know

When choosing a Seasonic Core GC-850 power supply, it's crucial to focus on the practical needs of your computer and your desired system build. Pay special attention to the balance between power, modularity, and compatibility with your case and components, as these limitations can significantly impact later use and upgrades.

• The modular wiring on this model allows for better airflow and easier cable organization, which is a particular advantage in more crowded or demanding cases.
• 850 W of power offers enough headroom for systems with more demanding graphics cards or multiple drives, but it's still worth checking whether the connectors match your specific configuration.
• This power supply complies with the ATX standard, so it is not suitable for compact or server cases with special dimensions - always check physical compatibility with your case.
• A fully modular model is most beneficial when you frequently upgrade or change the structure of your system; however, in larger, less dense enclosures, the organizational benefits are less pronounced.

Source of editorial recommendations: general verifiable guidelines for product selection.

In practice

🟢 Very suitable – Gaming computers with a powerful graphics card

850 W of power along with a fully modular design ensures stability and system flexibility for the needs of high-end gaming systems.

🟢 Very suitable – Workstations with multiple disks or powerful configuration

The power supply provides efficient power supply under constant higher loads and provides sufficient autonomy for additional components.

🟢 Very suitable – Upgrades of existing computers with higher consumption or more demanding cards

Increased power and modularity make it easy to expand the system in the future or replace components without having to replace the power supply.

🟡 Suitable with restrictions – Compact cases and mini-ITX systems

While modularity is a good wiring aid, the physical dimensions of an ATX power supply may not be compatible with all smaller cases - checking before purchase is essential.

🔴 Less suitable – Server or industrial systems with a special format

The power supply is designed for standard desktop cases; this model is not suitable for special 1U/2U or SFX/TXF formats.

Answers to frequently asked questions

Are all cables included and can I choose them as needed?

Yes, the fully modular design allows you to use only the cables your system actually needs.

Is this power supply suitable for larger gaming graphics cards?

850 W of power is usually sufficient for even the most demanding graphics cards in modern gaming computers, as long as the connectors are appropriate.

Can I upgrade my computer with additional drives without having to replace the power supply?

This model offers flexibility and power, allowing upgrades with multiple drives or other elements, if provided for in the specifications and interfaces of the power supply.

What should I check before buying regarding the size of the power supply?

Before purchasing, check if your case supports the ATX format and there is enough space to install the power supply.

Description updated: October 2026

Read also

If you are still deciding, the following content may also be helpful.

Products for various purposes

Power supplies for a basic office or home computer

Gaming computer power supplies

Power supplies for workstations

Power supplies for compact enclosures

Power supplies for computer upgrades

Power supplies for multi-disk systems

Why buy from ENAA?

• We deliver extremely fast: more than 95% of orders are shipped the next business day.
• The descriptions and selection on ENAA are neutral and technically transparent - the decision is always in your hands.