Key Specifications
Choose one or multiple features to search for items that have the same specifications.| Ports & interfaces | |
| Motherboard power connector | 20+4 pin ATX |
| Number of SATA power connectors | 6 |
| Peripheral (Molex) power connectors (4-pin) | 2 |
| ATX power connector (20+4 pin) | ![]() |
| CPU power connector (4+4 pin) | ![]() |
| PCI Express power connectors (6+2 pin) | 4 |
| Cabling type | Fully-Modular |
| Motherboard power cable length | 35 cm |
| SATA power cable length | 450 mm |
| Peripheral (Molex) power cable length | 330 mm |
| PCI Express power connectors (12+4 pin) | 1 |
| PCI Express power connectors (12+4 pin) cable length | 500 mm |
| Weight & dimensions | |
| Weight | 1.78 kg |
| Height | 63.5 mm |
| Width | 125 mm |
| Depth | 100 mm |
| Energy management | |
| Input current | 12 - 6 A |
| Nominal power | 850W |
| Power protection features | No load operation, Over current, Over power, Over voltage, Short circuit, Surge & inrush protection (SIP), Under voltage |
| Power Factor Correction (PFC) type | Active |
| Combined power (+3.3V) | 120 W |
| Combined power (+12V) | 850 W |
| Combined power (+5V) | 120 W |
| Combined power (-12V) | 3.6 W |
| Combined power (+5Vsb) | 12.5 W |
| Max output current (+3.3V) | 20 A |
| Max output current (+12V) | 70.83 A |
| Max output current (+5V) | 20 A |
| Max output current (-12V) | 0.3 A |
| Max output current (+5Vsb) | 2.5 A |
| AC input frequency | 50/60 Hz |
| AC input voltage | 100 - 240 V |
| Total power | 850 W |
| Operational conditions | |
| Operating temperature (T-T) | 0 - 40 °C |
| Packaging data | |
| Package weight | 2.12 kg |
| Package depth | 236 mm |
| Package height | 106 mm |
| Package width | 184 mm |
| Package type | Box |
| Certificates | |
| Certification | cTUVus / TUV / CB / RCM / CE / FCC BIS / BSMI / KC / UKCA / ICES / CCC |
| 80 PLUS certification | 80 PLUS Gold |
| Design | |
| Product colour | Black |
| Number of fans | 1 fan(s) |
| On/off switch | ![]() |
| Cooling type | Active |
| Fan diameter | 9.2 cm |
| Fan location | Top |
| Performance | |
| Purpose | PC |
| ATX version | 3.1 |
| 80 PLUS certification | 80 PLUS Gold |
| Silent mode | ![]() |
| Power supply unit (PSU) form factor | ATX |
| EAN | 0761345200271 |
The ANTEC SF850X is an 850-watt power supply unit engineered for small form factor (SFX) systems that require high power density. It adheres to the ATX 3.1 and SFX 4.1 standards, providing stable power delivery for current-generation hardware. The unit is rated for 80 PLUS Gold efficiency, which indicates a reduction in heat output and energy consumption under typical operating loads. Its compact dimensions make it a suitable component for space-constrained PC builds without compromising on available power output.
This PSU features a fully modular cabling system, allowing users to connect only the necessary cables for a specific configuration. This design simplifies cable management and can contribute to improved airflow within compact enclosures. It is constructed with components selected for operational reliability and includes a suite of protection circuits to safeguard the system against electrical faults. The unit is also designed to meet the transient load demands of modern components, including graphics cards that require PCIe 5.1 compliance.
Key Features:- 850W total power output
- 80 PLUS Gold certified efficiency
- SFX form factor for compact builds
- Fully modular cable design
- Compliant with ATX 3.1 and PCIe 5.1 standards
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- leaflet (English)

