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Rectangular black ATX power supply, 140mm ARGB fan, fully modular flat cables

Corn Electronics

Corn Electronics RGB-850 Pro 850 W Fully Modular Power Supply

SKU CH-20SR-NV9J9

Fully modular 850 W ATX supply with 80 PLUS Gold efficiency, 140 mm ARGB fan and 25 lighting modes synchronised via motherboard 5 V header

  • Max wattage850 W
  • Power efficiency> 90%
  • Modular cablingFull Modular
  • Fan configuration1 × 140 mm
  • Fan LEDARGB
  • Power factor correctionActive

Model ATX 80+ Gold (850W) Black

  • 850 W output with 80 PLUS Gold efficiency above 90%
  • 25 ARGB lighting modes with memory function and motherboard sync
  • Fully modular flat cables for tidy builds and better airflow
  • 140 mm fluid dynamic bearing fan runs quietly under temperature control
  • Comprehensive OPP, OVP, UVP, OCP, OTP, SCP protection for system safety

850 W Fully Modular ATX Power Supply

The Corn Electronics RGB-850 Pro delivers 850 W through a single +12V rail with full modular cabling. It carries 80 PLUS Gold certification and achieves over 90 % efficiency at typical loads. A 140 mm ARGB fan provides cooling with addressable lighting effects.

Suits builds needing clean cable routing

The fully modular design uses flat black cables to reduce clutter inside the case. ARGB lighting offers 25 modes with memory function and synchronises via a 5 V 3-pin motherboard header. Builds requiring more than two PCIe power connectors or a shorter chassis depth should consider other options.

Sustained output derates from 100 % to 80 %

The unit operates from 0 °C to 50 °C with temperature-controlled fan speed on a fluid dynamic bearing. Protections include OPP, OVP, UVP, OCP, OTP and SCP. MTBF is rated above 100000 hours at 25 °C excluding the fan.

How it compares

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

Price $105.99
Cheaper than about 65% 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
Product typeATX12 V
Ports & slots
PCIe power connectors2 × 6+2-Pin
SATA power connectors8
Power
Max wattage850 W
Power efficiency> 90%
Modular cablingFull Modular
Power factor correctionActive
Main power connector20+4Pin
12V railsSingle
Efficiency certification80 PLUS GOLD Certified
Overvoltage protectionYes
Overload protectionYes
Built-in protectionOPP, OVP, UVP, OCP, OTP, SCP
Safety Ceritificate Safety and EMC cTUVus, TUV, CB, CCC, EAC, CE
Supply voltage100–240 V
AC input frequency47–63 Hz
Rated input current12-6A
Size & build
Product dimensions170 mm (L) × 150 mm (W) × 86 mm (H)
Product weight3 KG
Compatibility
PSU length limit170 mm
More details
Fan configuration1 × 140 mm
Fan LEDARGB
Mean time between failures>100,000 h

Other versions of this model

1 more in the same range

Questions about this item

Does the PSU need a motherboard with a 5 V 3-pin ARGB header to synchronise the 25 lighting modes?

The unit can run its own 25 modes from the built-in RGB controller switch; the 5 V 3-pin header is only required if you want motherboard software to take over the lighting.

Will the 170 mm length and 150 mm width fit in a case designed for older 140 mm deep ATX units?

The PSU measures 170 mm long, 150 mm wide and 86 mm high, so it exceeds the depth of many legacy 140 mm designs; check your case clearance before installing.

How can I confirm the 850 W single +12 V rail is delivering stable power after the build is complete?

Monitor the +12 V line in the BIOS or a hardware utility under load; it should remain within the ATX12V tolerance while the fan speed follows the temperature curve.

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