Compare Meletrix Paper65 vs Sikakeyb Castle HM66 Differences Side by Side

Explore the comprehensive side-by-side comparison of the Meletrix Paper65 and Sikakeyb Castle HM66 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.

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Main differences	Released in 2026 Supports hot-swappable switches Includes a Yes, OLED display Compatible with both Mac and Windows Uses a Gasket Mount mounting style Made with a Aluminum, Steel case	Released in 2024 Has Magnetic switch options Includes a No display Utilizes Hall effect sensors Enables rapid trigger functionality Supports Wired, Wired only connectivity Runs at a 8000 Hz polling rate Weighs about 630 g Sized at 37 x 103 x 294 mm Made with a Aluminum case Features PBT keycaps
Score	Scores Performance: 58.4 Build Quality: 77.5 Productivity: 58.8 Customizability: 78.8 Portability: 73.8	Scores Performance: 85.7 Build Quality: 43.2 Productivity: 51.2 Customizability: 46.8 Portability: 63.4
Name	Name Meletrix Paper65	Name Sikakeyb Castle HM66
Release year	Release year 2026	Release year 2024
Switch Options	Switch Options -	Switch Options Magnetic
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 65%	Layout Size 65%
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 OLED	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	Connection Wired, Wired only
Polling Rate	Polling Rate -	Polling Rate 8000 Hz
Battery capacity	Battery capacity -	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 -
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 Aluminum, Steel	Case Material Aluminum
Keycaps Material	Keycaps Material -	Keycaps Material PBT
Dimensions	Dimensions -	Dimensions 37 x 103 x 294 mm
Weight	Weight -	Weight 630g