ASUS ROG STRIX 850W PLATINUM PSU

£144.35 inc VAT

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About This Item

  • 850 W ATX 3.1 power supply with GaN MOSFET technology
  • 80 PLUS Platinum certification for superior energy efficiency
  • Fully-modular design with etched cables for easy installation
  • 1x 120mm top-mounted semi-passive cooling fan
  • 6x SATA, 3x Molex, 3x PCIe, and 1x 12V-2×6 connectors
  • Active PFC and comprehensive protection features
  • Compact 160x150x86 mm form factor, 1.78 kg weight

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Description

ASUS ROG Strix Platinum 850W | High-Efficiency Gaming PSU

The ASUS ROG -STRIX-850P-GAMING power supply unit 850 W 20+4 pin ATX ATX Black delivers next-generation power efficiency and rock-solid stability for demanding gaming rigs. Built with GaN MOSFET technology, this 80 PLUS Platinum certified PSU ensures your high-end components receive clean, consistent power while minimising energy waste.

Slim Specs Table

Metric Spec
Total Power 850 W
Efficiency Certification 80 PLUS Platinum
Form Factor ATX
Cooling Semi-passive, single fan
Cabling Fully-modular

GaN MOSFET Technology for Superior Efficiency

The ROG Strix Platinum PSU features innovative GaN MOSFET technology that delivers up to 30% better power efficiency compared to traditional silicon designs. This advanced component generates less heat and operates more efficiently, reducing energy waste and keeping your electricity bills lower. The compact size of GaN MOSFET also allows for a more organised internal layout, creating space for larger heatsinks and improved airflow for enhanced thermal performance.

Intelligent Voltage Stabilisation for GPU Protection

Equipped with an Intelligent Voltage Stabilizer, this PSU ensures your graphics card receives steady, clean power even during intense gaming sessions or heavy workloads. This is particularly crucial for modern GPUs that demand consistent voltage to maintain peak performance and prevent instability. The technology actively monitors and adjusts power delivery to protect your expensive components from voltage fluctuations that could cause crashes or hardware damage.

ATX 3.1 Compliance and PCIe 5.0 Ready

Future-proof your build with ATX 3.1 compliance and native 12V-2×6 connector support. This PSU is engineered to handle the latest hardware requirements, including the power-hungry demands of next-generation graphics cards and processors. The 850W capacity provides ample headroom for high-end gaming systems with multiple GPUs, extensive cooling solutions, and RGB lighting setups, ensuring your rig can handle current and upcoming hardware without power limitations.

ROG Heatsinks for Extended Component Lifespan

ROG heatsinks facilitate lower operating temperatures throughout the PSU, directly contributing to longer component lifespan and extended 0dB operation during light loads. The enhanced cooling design means the fan stays off during low-power usage, creating a completely silent computing experience when browsing or performing light tasks. Under heavy loads, the optimised heatsink design maintains efficient heat dissipation, preventing thermal throttling and ensuring consistent performance during marathon gaming sessions.

Box contents

  • ASUS ROG Strix Platinum 850W PSU
  • Fully-modular cables (CPU, PCIe, SATA, Peripheral)
  • Mounting screws
  • User manual

Check before you buy

  • Confirm your case has sufficient space for ATX PSU dimensions (160 x 150 x 86 mm)
  • Verify your GPU requires a 6+2 pin connector (3 provided)
  • Check if your motherboard needs a 20+4 pin ATX connector
  • Ensure your system’s total power draw stays under 850W with headroom for future upgrades

Frequently Asked Questions

Q: Is this PSU compatible with PCIe 5.0 graphics cards?

A: Yes, the native 12V-2×6 connector supports PCIe 5.0 GPUs and provides stable power delivery for next-generation hardware.

Q: How many fans does the cooling system have?

A: The PSU features a single top-mounted fan with semi-passive cooling that operates silently during light loads.

Q: What type of power protection does this unit offer?

A: It includes over current, over power, over voltage, overheating, short circuit, and under voltage protection for comprehensive component safety.

Q: Are the cables braided or flat?

A: The PSU includes etched cables made from premium flexible material that operates at temperatures 50°C lower than safety limits.

The Consultant’s verdict & warranty

The ASUS ROG -STRIX-850P-GAMING power supply unit represents an excellent choice for serious gamers and PC enthusiasts building high-performance systems. Its GaN MOSFET technology, ATX 3.1 compliance, and fully-modular design make it ideal for users who demand efficiency, reliability, and future-proofing. Covered by the standard Manufacturer Warranty.

Specifications
Cooling
Number of fans1 fan(s)
Fan locationTop
Cooling typeSemi-passive
Design
80 PLUS certification80 PLUS Platinum
Product colourBlack
Number of fans1 fan(s)
Fan locationTop
Cooling typeSemi-passive
Power
Total power850 W
AC input voltage100 - 240 V
Power Factor Correction (PFC) typeActive
Combined power (+3.3V)130 W
Combined power (+12V)850 W
Combined power (+5V)130 W
Combined power (-12V)3.6 W
Combined power (+5Vsb)15 W
Max output current (+3.3V)25 A
Max output current (+12V)70.8 A
Max output current (+5V)25 A
Max output current (-12V)0.3 A
Max output current (+5Vsb)3 A
Power protection featuresOver current, Over power, Over voltage, Overheating, Short circuit, Under voltage
Ports & interfaces
Motherboard power cable length61 cm
SATA power cable length400,120 mm
Peripheral (Molex) power cable length400,150 mm
PCI Express power cable length75 cm
CPU power cable length100 cm
Motherboard power connector20+4 pin ATX
Number of SATA power connectors6
Peripheral (Molex) power connectors (4-pin)3
PCI Express power connectors (6+2 pin)3
CPU power connector (4+4 pin)Yes
Cabling typeFully-Modular
PCI Express power connectors (16-pin)1
Performance
Power supply unit (PSU) form factorATX
Silent modeYes
80 PLUS certification80 PLUS Platinum
PurposePC
ATX version3.1
Mean time between failures (MTBF)120000 h
Packaging content
Cables includedCPU, PCIe, SATA, Peripheral (Molex)
Weight & dimensions
Width160 mm
Depth150 mm
Height86 mm
Weight1.78 kg
Packaging data
Cables includedCPU, PCIe, SATA, Peripheral (Molex)
Package depth200 mm
Package width320 mm
Package height108 mm
Package typeBox
Package weight2.8 kg
Technical details
Compliance certificatesRoHS
Certificates
80 PLUS certification80 PLUS Platinum
Identifiers
Distributor SKUsW129019484, 538138, STD10229022, CL90YE00W2-B0NA00

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