Compare MMD KM40 vs NIUNIU Roly poly 40 R3 Differences Side by Side

Explore the comprehensive side-by-side comparison of the MMD KM40 and NIUNIU Roly poly 40 R3 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
	82	67	Select a keyboard to compare
Rating	5.0 stars (4 reviews)	0.0 stars (0 reviews)
Purchase Options
Main differences	Released in 2026 Has Linear, Tactile switch options Connects via USB-C Supports QMK firmware Supports VIA configuration Has built-in sound dampening Uses a Gasket Mount mounting style Equipped with a 2000 mAh battery Weighs about 620 g Features PBT keycaps Offers Yes, Rgb RGB lighting	Released in 2025 Has Linear switch options Supports VIAL configuration Uses a Top Mount mounting style Offers No RGB lighting
Score	Scores Performance: 61.2 Build Quality: 82.7 Productivity: 69.5 Customizability: 84.3 Portability: 83.9	Scores Performance: 47.2 Build Quality: 74.5 Productivity: 51.6 Customizability: 71 Portability: 80.4
Name	Name MMD KM40	Name NIUNIU Roly poly 40 R3
Release year	Release year 2026	Release year 2025
Switch Options	Switch Options Linear, Tactile	Switch Options Linear
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, 2.4 GHz, Wired, Wireless	Connection Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate	Polling Rate -	Polling Rate -
Battery capacity	Battery capacity 2000 mAh	Battery capacity -
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 Top Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb	Backlight
Case Colors	Case Colors	Case Colors
Case Material	Case Material Aluminum	Case Material Aluminum
Keycaps Material	Keycaps Material PBT	Keycaps Material -
Dimensions	Dimensions -	Dimensions -
Weight	Weight 620g	Weight -