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Black rectangular ATX power supply unit with 135mm fan and modular cables

ASRock

ASRock SL-850P 850W ATX 3.1 Power Supply

SKU CH-E2WM-NH5BR MPN SL-850P

An 850 W ATX 3.1 power supply with 80 PLUS Platinum efficiency, a native 12V-2x6 PCIe 5.1 connector and fully modular cables

  • Max wattage850 W
  • Fan configuration135 mm Striped Axial FDB Fan
  • Efficiency certification80 PLUS PLATINUM Certified
  • Built-in protectionOCP, SCP, OVP, UVP, OTP, OPP
  • Supply voltage100–240 V
  • AC input frequency50/60 Hz

Model PLATINUM 850W

  • 850 W platinum efficiency cuts electricity cost
  • ATX 3.1 and PCIe 5.1 ready for modern GPUs
  • Fully modular cables simplify build and airflow
  • 135 mm FDB fan with iCool mode runs silent at low load
  • Japanese capacitors and six protections ensure stable power

Purpose and Audience

The ASRock SL-850P is an 850 W ATX 3.1 power supply built for modern desktop builds. It targets system integrators and enthusiasts who need reliable, efficient power delivery for high-performance components.

Critical Specification

The unit provides a native PCIe 5.1 12V-2x6 connector with dual-colour cables and an integrated NTC sensor for temperature monitoring. This single connector decides compatibility with current-generation graphics cards that require the 12V-2x6 interface.

Thermals Noise and Power

A 135 mm striped axial FDB fan operates under iCool intelligent control. In iCool mode the fan remains off at low to medium loads for silent running and spins up only when load or temperature rises. The 80 PLUS Platinum and Cybenetics Platinum ratings confirm high efficiency across the load range.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $122.99
Cheaper than about 58% of the 10,869 comparable items (median $142.99).
Max wattage 850 W
Typical for this category: the median of 930 items is 850 W.

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Specifications

Product
Brand nameASRock
Model nameSL-850P
Product colorBlack
Product typeATX 3.1
Power
Max wattage850 W
Efficiency certification80 PLUS PLATINUM Certified
Built-in protectionOCP, SCP, OVP, UVP, OTP, OPP
Supply voltage100–240 V
AC input frequency50/60 Hz
Size & build
Product dimensions150 mm × 150 mm × 86 mm
Shipping weight3.27 kg
Package size305 × 193 × 130 mm
More details
Fan configuration135 mm Striped Axial FDB Fan

Other versions of this model

5 more in the same range

Questions about this item

Will the single 12V-2x6 connector support a graphics card that needs two 12VHPWR inputs?

The unit provides one native 12V-2x6 cable; a card requiring two such connectors would need an adapter or a different PSU.

Does the 135 mm FDB fan stay off at idle when iCOOL mode is enabled?

Yes, iCOOL ON keeps the fan stopped during low to medium loads and spins it up only when load or temperature rises.

Are all cables fully modular so I can remove the unused peripheral leads?

The PSU uses a fully modular design, letting you connect only the 24-pin, EPS, PCIe and peripheral cables your build requires.

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