Antec HCG850 PRO 850W Power Supply

£142.44 inc VAT

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About This Item

  • 850 W ATX 3.1 gaming power supply with 80 PLUS Platinum efficiency
  • 135 mm FDB silent fan with Zero RPM mode for quiet operation
  • 100 % modular cabling for easy cable management and clean build
  • 14 SATA, 3 PCIe 6+2 pin, and 1 PCIe 5.1 12+4 pin connectors
  • PhaseWave™ design with 100 % high-quality JP capacitors
  • CircuitShield™ industrial-grade protections including OCP, OVP, SCP
  • Compact 150 x 160 x 86 mm size for versatile PC case compatibility

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Description

Antec HCG850 PRO Platinum | 850W ATX3.1 Power Supply

The Antec HIGH CURRENT GAMER HCG850 PRO P GB power supply unit 850 W 20+4 pin ATX ATX Black delivers 850W of clean, efficient power for high-performance gaming and enthusiast PC builds. Built to ATX 3.1 and PCIe 5.1 standards, it supports the latest NVIDIA RTX 40-series graphics cards with stable, reliable power delivery.

Key Specifications

Metric Spec
Power Output 850W
Efficiency 80 PLUS Platinum
ATX Version 3.1
Form Factor ATX
Modular Fully-Modular
Fan 135mm FDB Silent

ATX 3.1 & PCIe 5.1 Ready for Next-Gen Components

Engineered to meet ATX 3.1 compliance, this PSU provides stable power delivery for the latest hardware demands. The included PCIe 5.1 12VHPWR cable ensures seamless compatibility with NVIDIA RTX 40-series GPUs, delivering clean power without voltage drops or instability during intensive gaming or rendering workloads.

100% High-Quality Japanese Capacitors for Superior Stability

Equipped with 100% high-quality Japanese capacitors, the HCG850 PRO Platinum achieves tight voltage regulation with minimal ripple and noise. This translates to cleaner power for your components, reducing the risk of crashes, data corruption, or hardware stress during demanding tasks.

PhaseWave Design for Unmatched Efficiency

The PhaseWave™ design uses a server-class full-bridge LLC topology with synchronous rectification, ensuring maximum efficiency and stable power delivery. This advanced architecture reduces heat generation and improves overall system reliability, even under heavy loads.

Comprehensive CircuitShield Protection Suite

Built-in industrial-grade protections include over-current (OCP), over-voltage (OVP), under-voltage (UVP), short-circuit (SCP), over-power (OPP), over-temperature (OTP), surge & inrush protection (SIP), and no-load operation safeguards. These protections keep your components safe from electrical anomalies.

Zero RPM Fan Mode for Silent Operation

The intelligent Zero RPM Manager keeps the fan off during low-to-medium loads, eliminating noise when full cooling isn’t needed. The 135mm fluid-dynamic bearing fan only spins up when necessary, balancing silent operation with effective thermal management.

Box Contents

  • Antec HCG850 PRO Platinum power supply unit
  • PCIe 5.1 12VHPWR GPU cable
  • Modular cable set
  • Mounting screws
  • User manual

Check Before You Buy

  • Confirm your PC case has sufficient space (150mm x 160mm x 86mm)
  • Verify your GPU requires a 12VHPWR connector for PCIe 5.1 compatibility
  • Check if your system’s total power draw stays under 850W
  • Ensure your motherboard uses standard 20+4 pin ATX power connector

Frequently Asked Questions

Q: Is this power supply compatible with Intel 12th/13th Gen CPUs?

A: Yes, it supports ATX 3.1 standard and works with all modern Intel and AMD platforms.

Q: Can I use this with non-modular components?

A: The fully-modular design means you only connect cables you need, improving airflow and reducing clutter.

Q: What GPU power connectors are included?

A: Three 6+2 pin PCIe connectors plus one 12+4 pin PCIe 5.1 12VHPWR connector for latest GPUs.

Q: How quiet is the fan under normal use?

A: With Zero RPM mode, the fan remains silent during light loads and only activates when needed.

Q: What warranty coverage is provided?

A: This unit comes with a 10-year manufacturer warranty covering defects in materials and workmanship.

The Consultant’s Verdict & Warranty

The Antec HCG850 PRO Platinum represents excellent value for gamers and enthusiasts building high-performance systems with next-gen components. Its ATX 3.1 compliance, PCIe 5.1 support, and comprehensive protection suite make it future-proof for demanding builds. The 80 PLUS Platinum efficiency helps reduce electricity costs while maintaining stable power delivery. Covered by the standard manufacturer warranty, this PSU offers both performance and peace of mind for your investment.

Specifications
Cooling
Fan diameter13.5 cm
Number of fans1 fan(s)
Fan locationTop
Cooling typeActive
Performance
On/off switchYes
Power supply unit (PSU) form factorATX
Silent modeYes
80 PLUS certification80 PLUS Platinum
PurposePC
ATX version3.1
CertificationcTUVus/TUV/CB/RCM/CE/FCC/BIS/BSMI/KC/UKCA/ICES/CCC
Design
80 PLUS certification80 PLUS Platinum
CertificationcTUVus/TUV/CB/RCM/CE/FCC/BIS/BSMI/KC/UKCA/ICES/CCC
Product colourBlack
Fan diameter13.5 cm
On/off switchYes
Number of fans1 fan(s)
Fan locationTop
Cooling typeActive
Power
Total power850 W
AC input voltage100 - 240 V
AC input frequency50/60 Hz
Input current11 - 5.5 A
Power Factor Correction (PFC) typeActive
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 featuresNo load operation, Over current, Over power, Over voltage, Short circuit, Surge & inrush protection (SIP), Under voltage
Ports & interfaces
Motherboard power cable length61 cm
SATA power cable length150,400,500 mm
Peripheral (Molex) power cable length100,450 mm
CPU power cable length70 cm
Motherboard power connector20+4 pin ATX
Number of SATA power connectors14
Peripheral (Molex) power connectors (4-pin)3
PCI Express power connectors (6+2 pin)3
CPU power connector (4+4 pin)Yes
ATX power connector (20+4 pin)Yes
Cabling typeFully-Modular
PCI Express power connectors (12+4 pin)1
PCI Express power connectors (12+4 pin) cable length750 mm
Operational conditions
Operating temperature (T-T)0 - 40 °C
Certificates
CertificationcTUVus/TUV/CB/RCM/CE/FCC/BIS/BSMI/KC/UKCA/ICES/CCC
80 PLUS certification80 PLUS Platinum
Weight & dimensions
Width150 mm
Depth160 mm
Height86 mm
Weight3.3 kg
Packaging data
Package depth336 mm
Package width198 mm
Package height133 mm
Package typeBox
Package weight3.91 kg

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