Seasonic Focus GX-850 850W 80 Plus Gold Modular PSU White
£166.79 Original price was: £166.79.£158.38Current price is: £158.38.
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About This Item
- 850W total power output with 80 PLUS Gold certification
- ATX form factor with fully-modular cabling
- 13.5 cm Fluid Dynamic Bearing (FDB) fan for active cooling and quiet operation
- Digital Hybrid Fan Control with Fanless, Silent, and Cooling modes
- Equipped with PCIe 5.0 and ATX 3.0 standards for modern components
- Comprehensive power protection features including OCP, OPP, OVP, OTP, SCP, and UVP
- 10-year warranty for extended reliability
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Seasonic FOCUS GX-850 – Reliable Power for Modern Systems
We are pleased to offer the Seasonic Focus GX-850 power supply unit 850 W 20+4 pin ATX ATX White. This PSU is an excellent choice for PC builders needing stable, efficient power delivery. It is particularly well-suited for systems with demanding graphics cards and processors. Its robust design ensures consistent performance.
Core Power Metrics
| Metric | Spec. |
|---|---|
| Total Power | 850 W |
| 80 PLUS | Gold |
| Form Factor | ATX |
| Fan Diameter | 13.5 cm |
| Warranty Period | 10 years |
Advanced Thermal Management
This unit features Seasonic’s Digital Hybrid Fan Control. This system intelligently manages fan speed across three stages. It ensures optimal cooling while keeping noise levels low. You benefit from a quieter PC experience.
Optimised Fan Longevity
The 13.5 cm fan uses a Fluid Dynamic Bearing (FDB) design. FDB technology reduces friction and vibration. This not only lowers operational noise but also extends the fan’s lifespan. Your system stays cool and reliable for longer.
Seamless Component Integration
The fully-modular cabling system simplifies installation and cable management. You only connect the cables you need. This improves airflow within your PC case. It also creates a cleaner internal aesthetic.
Future-Proof Connectivity
The FOCUS GX-850 complies with ATX 3.0 and PCIe 5.0 standards. It includes a 12+4 pin PCIe Express connector. This ensures compatibility with the latest high-power graphics cards. Your system is ready for future upgrades.
Before you order
- Confirm your PC case has adequate space for a 150 mm wide PSU.
- Check your motherboard requires a 20+4 pin ATX power connector.
- Ensure your graphics card uses the 12+4 pin PCIe Express connector.
Frequently Asked Questions
Q: What is the 80 PLUS Gold certification?
A: 80 PLUS Gold indicates high power efficiency, meaning less energy is wasted as heat.
Q: Is this power supply suitable for gaming PCs?
A: Yes, its 850 W output and modern connectors are well-suited for gaming systems.
Q: What does “fully-modular” cabling mean?
A: Fully-modular means you can detach all cables not in use, improving case airflow and aesthetics.
Q: How long is the warranty period for this unit?
A: This Seasonic Focus GX-850 power supply unit 850 W 20+4 pin ATX ATX White comes with a 10-year warranty.
Our Recommendation
This PSU is an excellent choice for anyone building or upgrading a high-performance PC. It offers reliable, efficient power with quiet operation. The 10-year warranty provides significant peace of mind.
| Cooling | |
|---|---|
| Fan diameter | 13.5 cm |
| Number of fans | 1 fan(s) |
| Cooling type | Active |
| Performance | |
| On/off switch | Yes |
| Power supply unit (PSU) form factor | ATX |
| 80 PLUS certification | 80 PLUS Gold |
| Purpose | PC |
| Safety | cTUVus, TUV, CB, CCC, BSMI, EAC, CE |
| Mean time between failures (MTBF) | 100000 h |
| Bearing technology | FDB |
| Design | |
| 80 PLUS certification | 80 PLUS Gold |
| Safety | cTUVus, TUV, CB, CCC, BSMI, EAC, CE |
| Product colour | White |
| Fan diameter | 13.5 cm |
| On/off switch | Yes |
| Number of fans | 1 fan(s) |
| Cooling type | Active |
| Power | |
| Total power | 850 W |
| Maximum input current (@220V) | 5.5 A |
| AC input voltage | 100 - 240 V |
| AC input frequency | 50/60 Hz |
| Input current | 11 - 5.5 A |
| Maximum input current (@110V) | 11 A |
| Combined power (+3.3V) | 100 W |
| Combined power (+12V) | 840 W |
| Combined power (+5V) | 100 W |
| Combined power (-12V) | 3.6 W |
| Combined power (+5Vsb) | 15 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) | 3 A |
| Power protection features | Over current, Over power, Over voltage, Overheating, Short circuit, Under voltage |
| Ports & interfaces | |
| Motherboard power cable length | 61 cm |
| SATA power cable length | 550 mm |
| Peripheral (Molex) power cable length | 690 mm |
| CPU power cable length | 70 cm |
| Motherboard power connector | 20+4 pin ATX |
| Number of SATA power connectors | 2 |
| Peripheral (Molex) power connectors (4-pin) | 3 |
| PCI Express power connectors (6+2 pin) | 3 |
| CPU power connector (4+4 pin) | Yes |
| Cabling type | Fully-Modular |
| PCI Express power connectors (12+4 pin) | 1 |
| Operational conditions | |
| Operating temperature (T-T) | 0 - 50 °C |
| Certificates | |
| Compliance certificates | CB, CE, EAC, REACH, RoHS, WEEE, cTUVus |
| 80 PLUS certification | 80 PLUS Gold |
| Safety | cTUVus, TUV, CB, CCC, BSMI, EAC, CE |
| Safety regulation & standards | |
| Safety | cTUVus, TUV, CB, CCC, BSMI, EAC, CE |
| Weight & dimensions | |
| Width | 150 mm |
| Depth | 140 mm |
| Height | 86 mm |
| Packaging data | |
| Package type | Box |
| Technical details | |
| Sustainability certificates | ENERGY STAR |
| Warranty period | 10 year(s) |
| Compliance certificates | CB, CE, EAC, REACH, RoHS, WEEE, cTUVus |
| Logistics data | |
| Warranty period | 10 year(s) |

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