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Black rectangular ATX power supply unit with fully modular cable ports and 120mm fan grille

darkFlash

darkFlash DF-DG-850-BK 850W ATX 3.1 power supply

SKU CH-SR40-13FA2 MPN DF-DG-850-BK

Fully modular ATX 3.1 power supply delivers 850 W with 80 PLUS Gold efficiency and a native 12V-2x6 cable for 600 W GPU power

  • Max wattage850 W
  • Power factor correctionActive
  • Main power connector20+4Pin
  • Efficiency certification80 PLUS GOLD Certified
  • Built-in protectionOver voltage (OVP) Over load (OPP) Over current (OCP) Under
  • Connection types6 x SATA

Wattage 850W

  • 850 W continuous power drives demanding CPUs and GPUs
  • Native 12V-2x6 cable supplies up to 600 W to modern graphics cards without adapters
  • 80 PLUS Gold certification delivers over 90 % efficiency at typical loads
  • Fully modular design and compact 140 mm depth simplify cable routing and improve airflow
  • 120 mm HDB fan and seven protection circuits ensure quiet, reliable operation

850W ATX 3.1 power supply for gaming

The darkFlash DF-DG-850-BK delivers 850W of continuous power for high-performance gaming PCs and creator systems. Its single +12V rail design provides strong output for power-hungry CPUs and modern graphics cards. The fully modular cable system allows cleaner builds with improved airflow inside the case.

Capacity and headroom for modern GPUs and CPUs

The unit supports ATX 3.1 and PCIe 5.1 standards with a native 12V-2x6 connector delivering up to 600W directly to graphics cards without adapters. 80 PLUS Gold certification ensures over 90% efficiency under typical loads. Builds requiring more than 850W total system power will need a higher capacity unit.

Thermals, noise and power draw in normal use

A 120mm HDB fan balances cooling performance with quiet operation during typical workloads. The compact 140mm depth fits most PC cases while maintaining effective thermal management. Comprehensive protection circuits including OVP, OPP, OCP, UVP, SCP, OTP and NLP safeguard components during power anomalies.

How it compares

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

Price $61.99
Cheaper than about 84% 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 nameDarkFlash
Model nameDF-DG-850-BK
Part numberDF-DG-850-BK
Product colorBlack
Product typeATX 3.1 Ready, PCIe 5.1 Ready
Ports & slots
Connection types6 x SATA
Power
Max wattage850 W
Power factor correctionActive
Main power connector20+4Pin
Efficiency certification80 PLUS GOLD Certified
Built-in protectionOver voltage (OVP)
Over load (OPP)
Over current (OCP)
Under voltage (UVP)
Short circuit (SCP)
Overheat (OTP)
Zero load (NLP)
Size & build
Product dimensions140 × 150 × 86 mm
Shipping weight2.22 kg
Package size292 × 198 × 127 mm

Other versions of this model

1 more in the same range

Questions about this item

Will the native 12V-2x6 cable work with my older graphics card that uses 8-pin PCIe power?

Yes, the fully modular design lets you swap the 12V-2x6 cable for the included PCIe 8-pin cables that use 18AWG wire, so older GPUs connect without adapters.

How can I verify the 80 PLUS Gold efficiency is active after installation?

Under typical loads the unit delivers over 90 percent efficiency; you can confirm this with a wall power meter or software that reads the PSU's internal monitoring if your motherboard supports it.

Which cables come in the box and what must I source separately for a standard build?

The box includes the 20+4 pin main connector, a native 12V-2x6 GPU cable, PCIe 8-pin cables, and six SATA cables; no extra cables are needed for a typical ATX 3.1 system.

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