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Black fully modular ATX 3.1 power supply with flat cables and 120 mm fan

Raidmax

Raidmax Cobra 850W ATX 3.1 power supply

SKU CH-E6VK-C65JP MPN 850W

A fully modular 850 W ATX 3.1 power supply with 80+ Gold efficiency, PCIe Gen 5 support, flat cables and a 135 mm fan

  • Max wattage850 W
  • Power efficiency> 90%
  • Modular cablingFull Modular
  • Fan configuration1 × 120 mm
  • Power factor correctionActive
  • Main power connector20+4 Pin

Model ATX 80+ Gold 850W Full-Modular

  • 850 W output powers demanding gaming builds
  • Fully modular flat cables reduce clutter and improve airflow
  • 80 PLUS Gold efficiency reaches 90% under typical loads
  • ATX 3.1 design supports PCIe Gen 5 graphics cards
  • 135 mm fan with thermal control keeps operation quiet

Power supply for gaming PCs

The Raidmax Cobra delivers 850 W through an ATX 3.1 design with fully modular cabling. It targets builders who need strong output for modern graphics cards and clean cable routing.

ATX 3.1 PCIe Gen 5 support

This unit meets the ATX 3.1 specification and is ready for PCIe Gen 5 graphics cards. The single +12 V rail and 80 PLUS Gold rating above 90 % efficiency are the key figures that decide compatibility.

Fully modular flat cables simplify installation

All cables detach, and the flat black design reduces clutter for better airflow. The 135 mm fan runs quietly under thermal control. Ensure the 20+4 pin main connector and the two 6+2 pin PCIe plugs match your motherboard and GPU requirements.

How it compares

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

Price $73.99
Cheaper than about 78% 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 nameRAIDMAX
Product lineCobra
Model name850 W
Product colorBlack
Product typeATX 12 V v3.1
Performance
Frequency50/60 Hz
Ports & slots
PCIe power connectors2 × 6+2 Pin
SATA power connectors6
12V power connector12VHPWR
Power
Max wattage850 W
Power efficiency> 90%
Modular cablingFull Modular
Power factor correctionActive
Main power connector20+4 Pin
12V railsSingle
Efficiency certification80 PLUS GOLD Certified
Overvoltage protectionYes
Overload protectionYes
Built-in protectionOCP/UVP/OVP/SCP/OPP/OTP
Supply voltage100–240 V
AC input frequency50/60 Hz
Rated input current8A @ 115 V, 4A @ 230 V
Rated power850 W
+3.3V max. current18A
+5V max. current18A
+12V1 max. current54A
Under voltage protectionYes
Over current protectionYes
Over power protectionYes
Size & build
Top fans size135 mm
In the box
Fans total quantity1
Environment & compliance
Over temperature protectionYes
More details
Fan configuration1 × 120 mm
Mean time between failures>100,000 h
Top fans bearing typeFluid Dynamic
Short circuit protectionYes

Other versions of this model

3 more in the same range

Questions about this item

Will the 120 mm fan fit in a standard ATX case without clearance issues?

The unit uses a single 120 mm fan in a standard ATX 3.1 form factor, so it fits any case designed for ATX power supplies.

Does the fully modular design include the PCIe 6+2 pin cables needed for a modern graphics card?

Yes, the box supplies two PCIe 6+2 pin cables that you plug in only if your GPU requires them.

Can this PSU run on a 100 V circuit as well as 240 V without a voltage switch?

Active PFC handles the full 100-240 V range automatically at 50 or 60 Hz.

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