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Black DDC pump with digital display and wireless control

FormulaMod

FormulaMod Granzon GFM II PWM DDC Pump 700L/H

SKU CH-6FRJ-QYDX3

PWM DDC water-cooling pump with wireless speed control and digital display, delivering 700 L/h flow

  • TypePump
  • Digital display enables wireless speed control
  • PWM DDC motor delivers 700 L/H flow rate
  • 6 metre lift handles tall loop configurations
  • Upgraded 2.0 revision improves reliability
  • Compact black design fits tight chassis spaces

What the pump does

The FormulaMod Granzon GFM II is a DDC water pump built for custom liquid-cooling loops in desktop PCs. It delivers a flow rate of 700 L/H and a lift of 6 metres, making it suitable for systems with multiple blocks and radiators. The unit ships as a repair or replacement component and is sold new in its 2.0 revision.

Build and daily use

The pump body is black and uses a standard DDC mounting footprint, so it fits common reservoir tops and brackets without modification. Speed is adjusted through PWM signalling and a wireless digital display, letting you change flow without opening the case. No installation instructions are included in the box; a tutorial video is available from the seller if required.

Interface limits

PWM control depends on a motherboard header or controller that outputs a standard four-wire signal, and the wireless display must stay within its unlisted radio range. The manufacturer may change the block design at any time to improve compatibility, so the delivered unit can differ from product images. Buyers who need guaranteed dimensional consistency or bundled mounting hardware should verify before purchasing.

Highlights

  • Digital display enables wireless speed control
  • PWM DDC motor delivers 700 L/H flow rate
  • 6 metre lift handles tall loop configurations
  • Upgraded 2.0 revision improves reliability
  • Compact black design fits tight chassis spaces

Specifications

TypePump

Questions about this item

How does the PWM interface control the Granzon GFM II pump speed in practice?

The PWM signal adjusts the motor speed digitally, and the wireless display lets you monitor the resulting flow up to 700 L/H without opening the case.

What physical mounting does the Granzon GFM II pump require?

It follows the standard DDC footprint, so it fits existing DDC brackets, reservoir tops or pump holders that accept that pattern.

What is the installation step that people often miss with the Granzon GFM II?

Pairing the wireless display to the pump before finalising the loop, otherwise the speed readout will not sync and you will think the unit is faulty.

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