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Glorious GMMK 3 HE 75% specifications and in-depth review

Glorious GMMK 3 HE 75%

Manufacturer: Glorious

The Glorious GMMK 3 HE 75% is a compact mechanical gaming keyboard built around Hall effect switch technology, offering a 75% layout that balances a smaller footprint with a functional key arrangement. It ships with a wrist rest and adjustable feet, sits in an aluminum and plastic case available in black or white, and uses a detachable USB cable. The board features RGB backlighting throughout, with an aluminum plate underneath contributing to its structural rigidity.

At the core of the GMMK 3 HE 75% are the Glorious Fox HE linear switches, which support an adjustable actuation point ranging from 0.1 mm to 4 mm and require 45 g of actuation force across a total travel distance of 4 mm. The switches are hot-swappable and the board operates at a polling rate of 8000 Hz. Rapid trigger functionality and full N-key rollover are supported, while the layout follows the ANSI US standard and uses double-shot PBT keycaps in an OEM profile. Media controls are accessible via the Fn key, and a rotary dial is included on the board. The keyboard carries a two-year warranty.

Pros
  • The Hall effect switches support rapid trigger with an actuation range from 0.1 mm to 4 mm, giving fine control over keystroke sensitivity
  • Hot-swappable switches allow easy replacement without soldering
  • Gasket mount construction provides a softer typing feel by decoupling the plate from the case
  • An 8000 Hz polling rate delivers frequent input reporting for responsive input registration
  • A wrist rest is included in the box, adding ergonomic support out of the box
  • The detachable USB cable makes transport and cable replacement straightforward
Cons
  • No support for QMK, ZMK, or VIA firmware limits customization options for users who prefer open-source remapping tools
  • Media functions are only accessible via the Fn key, with no dedicated media keys on the layout
  • Dual actuation and adjustable actuation are not supported despite the Hall effect switch hardware
  • No USB passthrough port is available on the board
  • The keyboard is not designed for Mac, restricting out-of-the-box compatibility for macOS users
Who is this for?

This keyboard suits users who want precise control over their input, particularly those who benefit from rapid trigger functionality with an actuation range as narrow as 0.1 mm. The 75% compact layout makes it a practical choice for users with limited desk space who still want arrow keys and a function row. With an 8000 Hz polling rate and N-key rollover, it caters well to competitive or enthusiast gamers seeking responsive keystroke registration. The included wrist rest and adjustable feet also make it a reasonable fit for longer typing or gaming sessions where ergonomic support matters.

Who is this NOT for?

Users who rely on QMK, ZMK, or VIA firmware for deep key remapping and macro programming will find this board restrictive, as none of those open-source tools are supported. It is also a poor fit for Mac users, since the keyboard is not designed for macOS out of the box. Those who prefer dedicated media keys for quick audio or playback control without using a function layer will likely find the Fn-dependent media access inconvenient, and users looking for a board with USB passthrough for connecting peripherals directly will need to look elsewhere.

General info:

Keyboard type Gaming, Mechanical
Keyboard layout size Compact (75%)
Profile Standard
connectivity Wired
connection type USB
polling rate 8000 Hz
Mount type Gasket mount
designed for Mac ✕
has a detachable cable ✓
height 152 mm
width 338 mm
thickness 44.5 mm
warranty period 2 years

The GMMK 3 HE 75% is a wired gaming mechanical keyboard in a compact 75% layout with a standard profile, connecting via USB at a polling rate of 8000 Hz. It uses a gasket mount construction and is not designed for Mac. The cable is detachable, and the board measures 338 mm wide, 152 mm tall, and 44.5 mm thick. It comes with a two-year warranty.

Design:

has RGB lighting ✓
Has a backlit keyboard ✓
Case material Plastic, Aluminum
Plate material Aluminum
Case colors Black, White
has adjustable feet ✓
includes a wrist rest ✓

The GMMK 3 HE 75% features a backlit keyboard with RGB lighting and a case constructed from a combination of plastic and aluminum, with an aluminum plate inside. It is available in black or white and ships with a wrist rest included. The feet are adjustable, allowing the typing angle to be modified to suit personal preference.

Switches:

Switch type Hall effect
Switch feel Linear
Hot-swappable switches ✓
Switch name Glorious Fox HE
Actuation distance (min) 0.1 mm
Actuation distance (max) 4 mm
Actuation force 45 g
Total travel distance 4 mm

The GMMK 3 HE 75% uses Glorious Fox HE Hall effect switches with a linear feel, delivering a smooth keystroke across a total travel distance of 4 mm. The actuation point can be set anywhere between 0.1 mm and 4 mm, and each switch requires 45 g of actuation force. The switches are hot-swappable, making them straightforward to replace without soldering.

Features:

has analog input ✕
has rapid trigger ✓
has dual actuation ✕
has adjustable actuation ✕
has NKRO ✓
has USB passthrough ✕
Has a display ✕
has QMK support ✕
has ZMK support ✕
has VIA support ✕

The GMMK 3 HE 75% supports rapid trigger and full N-key rollover (NKRO), but does not include analog input, dual actuation, or adjustable actuation. There is no USB passthrough or built-in display, and the board does not support QMK, ZMK, or VIA firmware.

Keys & layout:

Keyboard layout ANSI (United States)
Keycap type PBT, Double-shot
Keycap profile OEM
uses a standard key layout ✓
Media keys Via Fn key
has a rotary dial ✓

The GMMK 3 HE 75% follows an ANSI (United States) layout with a standard key arrangement, using double-shot PBT keycaps in an OEM profile. Media controls are accessible via the Fn key rather than dedicated keys, and a rotary dial is built into the board for additional input control.

Final Verdict

The Glorious GMMK 3 HE 75% is a well-specified compact keyboard built around Hall effect technology, and its standout feature is the rapid trigger system with a 0.1 mm minimum actuation point, which gives users a meaningful degree of input precision that is well-suited to competitive gaming scenarios. The gasket mount, hot-swappable switches, 8000 Hz polling rate, and included wrist rest round out a feature set that prioritizes both responsiveness and everyday usability. Its limitations — namely the absence of open-source firmware support and Mac compatibility — mean it appeals most strongly to Windows-based users who want a responsive, ready-to-use board without the need for deep software customization. For that audience, it represents a focused and capable option within the 75% keyboard segment.

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