Compare KBDFans MM HE M64 vs MMD KM21 Ultra Differences Side by Side

Explore the comprehensive side-by-side comparison of the KBDFans MM HE M64 and MMD KM21 Ultra 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
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Rating	0.0 stars (0 reviews)	0.0 stars (0 reviews)
Purchase Options
Main differences	Released in 2025 Has Magnetic switch options Utilizes Hall effect sensors Enables rapid trigger functionality Includes screw-in stabilizers Supports Wired, Wired only connectivity Runs at a 8000 Hz polling rate	Released in 2026 Supports hot-swappable switches Comes with a knob Compatible with both Mac and Windows Connects via USB-C Supports QMK firmware Supports VIA configuration Uses a Top Mount mounting style Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity Equipped with a 980 mAh battery Made with a Aluminum case
Score	Scores Performance: 91.1 Build Quality: 55.2 Productivity: 56.6 Customizability: 59.8 Portability: 59.4	Scores Performance: 66.1 Build Quality: 81.8 Productivity: 89.3 Customizability: 89.9 Portability: 85.7
Name	Name KBDFans MM HE M64	Name MMD KM21 Ultra
Release year	Release year 2025	Release year 2026
Switch Options	Switch Options Magnetic	Switch Options -
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size Numpad	Layout Size Numpad
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 Wired, Wired only	Connection Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate	Polling Rate 8000 Hz	Polling Rate -
Battery capacity	Battery capacity -	Battery capacity 980 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 -	Mount Style Top Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb	Backlight Rgb
Case Colors	Case Colors	Case Colors
Case Material	Case Material -	Case Material Aluminum
Keycaps Material	Keycaps Material -	Keycaps Material -
Dimensions	Dimensions -	Dimensions -
Weight	Weight -	Weight -