Compare HMX GB40 vs MMD KM40 Differences Side by Side

Explore the comprehensive side-by-side comparison of the HMX GB40 and MMD KM40 and view their biggest differences. The detailed comparison table allows you to see all the essential features, specifications, and benefits of each keyboard at a glance. Whether you're looking for performance, value, or specific functionalities, this comparison tool helps you make an informed decision.

Model
	64	82	Select a keyboard to compare
Rating	0.0 stars (0 reviews)	5.0 stars (4 reviews)
Purchase Options
Main differences	Released in 2025 Supports Bluetooth, Wired, Wireless connectivity Features ABS, PBT keycaps Offers Yes, Rgb, South-face, Rgb South-face RGB lighting	Released in 2026 Has Linear, Tactile switch options Supports QMK firmware Supports VIA configuration Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity Equipped with a 2000 mAh battery Weighs about 620 g Features PBT keycaps Offers Yes, Rgb RGB lighting
Score	Scores Performance: 58.1 Build Quality: 69.1 Productivity: 56.8 Customizability: 57.6 Portability: 84.4	Scores Performance: 61.3 Build Quality: 82.7 Productivity: 69.5 Customizability: 84.3 Portability: 84.1
Name	Name HMX GB40	Name MMD KM40
Release year	Release year 2025	Release year 2026
Switch Options	Switch Options -	Switch Options Linear, Tactile
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 40%	Layout Size 40%
Layout Standard	Layout Standard ANSI	Layout Standard ANSI
Layout Ergonomics	Layout Ergonomics Normal	Layout Ergonomics Normal
Knob Support	Knob Support	Knob Support
Display Support	Display Support	Display Support
Mac/Win Support	Mac/Win Support	Mac/Win Support
Multi-Media Keys	Multi-Media Keys	Multi-Media Keys
USB-C	USB-C	USB-C
USB passthrough	USB passthrough	USB passthrough
Connection	Connection Bluetooth, Wired, Wireless	Connection Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate	Polling Rate -	Polling Rate -
Battery capacity	Battery capacity -	Battery capacity 2000 mAh
Hall Effect Support	Hall Effect Support	Hall Effect Support
QMK Support	QMK Support	QMK Support
VIA Support	VIA Support	VIA Support
VIAL Support	VIAL Support	VIAL Support
N-Key Rollover	N-Key Rollover	N-Key Rollover
Rapid Trigger	Rapid Trigger	Rapid Trigger
Mount Style	Mount Style Gasket Mount	Mount Style Gasket Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb, South-face	Backlight Rgb
Case Colors	Case Colors	Case Colors
Case Material	Case Material Aluminum	Case Material Aluminum
Keycaps Material	Keycaps Material ABS, PBT	Keycaps Material PBT
Dimensions	Dimensions -	Dimensions -
Weight	Weight -	Weight 620g