We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Black rectangular ATX power supply with flat black cables and a 120 mm fan grille

Raidmax

Raidmax Cobra 650W ATX 3.1 power supply

SKU CH-Q1MJ-EK24D MPN 650W

ATX 3.1 650 W unit with 80+ Gold efficiency, flat cables, PCIe Gen 5 support, a 120 mm fan and full OVP UVP OCP SCP OPP OTP protection

  • Max wattage650 W
  • Power efficiency> 90%
  • Modular cablingNo
  • Fan configuration1 × 120 mm
  • Power factor correctionActive
  • Main power connector20+4 Pin

Model ATX 80+ Gold 650W

  • 80+ Gold efficiency reaches 90% reducing heat and electricity costs
  • Flat black cables cut clutter improving airflow inside the case
  • ATX 3.1 PCIe Gen 5 ready powers latest graphics cards stably
  • 120 mm low-noise fan with thermal control runs quietly under load
  • Full protection suite OVP UVP OCP SCP OTP guards components from faults

ATX 3.1 power supply for modern builds

The Raidmax Cobra delivers 650 W through an ATX 12V v3.1 design with 80 PLUS Gold certified efficiency. A single +12 V rail supplies stable power to demanding components. Black flat cables reduce clutter and improve airflow inside the case.

Who this suits and who should look elsewhere

Builders assembling a gaming PC or workstation with a current-gen graphics card will appreciate the PCIe Gen 5 readiness and full protection suite. Systems requiring modular cabling or higher wattage for multi-GPU arrays should consider a different unit.

The specification that decides fit

Two 6+2 pin PCI-Express connectors provide the only native GPU power outputs on this non-modular unit. Verify that your graphics card draws no more than two such connectors before choosing this supply.

How it compares

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

Price $30.99
Cheaper than about 94% of the 10,869 comparable items (median $142.99).
Max wattage 650 W
Lower than about 70% of the 930 comparable items (median 850 W).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameRAIDMAX
Product lineCobra
Model name650 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 wattage650 W
Power efficiency> 90%
Modular cablingNo
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 power650 W
+3.3V max. current18A
+5V max. current18A
+12V1 max. current54A
Under voltage protectionYes
Over current protectionYes
Over power protectionYes
Size & build
Top fans size120 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 650 W output handle a modern GPU that needs a 12VHPWR connector?

This unit provides two 6+2-pin PCIe cables but no native 12VHPWR plug; an adapter is required for cards using that connector.

Are the cables detachable for a cleaner build?

The power supply is non-modular, so all cables are fixed and cannot be removed.

What protections guard my components against faults?

It includes OVP, UVP, OCP, SCP, OPP and OTP to shut down safely on over-voltage, under-voltage, over-current, short-circuit, over-power or over-temperature events.

More in ATX Desktop Power Supplies

Similar items