Compare Keychron J4 QMK vs Ktechs Stars80 Differences Side by Side

Explore the comprehensive side-by-side comparison of the Keychron J4 QMK and Ktechs Stars80 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 2025 Connects via USB-C Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity Runs at a 1000 Hz polling rate Equipped with a 4000 mAh battery Weighs about 870 g Sized at 38 x 366 x 138 mm Made with a ABS case Features PBT keycaps Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting	Released in 2024 Supports VIA configuration Uses a Plate Mount mounting style Weighs about 1850 g Sized at 37 x 370 x 146 mm Made with a Aluminum case Offers Yes, Rgb RGB lighting
Score	Scores Performance: 79.2 Build Quality: 60.8 Productivity: 84.5 Customizability: 74.6 Portability: 73.5	Scores Performance: 76.4 Build Quality: 80.4 Productivity: 74 Customizability: 93 Portability: 59.5
Name	Name Keychron J4 QMK	Name Ktechs Stars80
Release year	Release year 2025	Release year 2024
Switch Options	Switch Options -	Switch Options -
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 80%	Layout Size 80%
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
Polling Rate	Polling Rate 1000 Hz	Polling Rate -
Battery capacity	Battery capacity 4000 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 -	Mount Style Plate Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb, White, North-face	Backlight Rgb
Case Colors	Case Colors	Case Colors
Case Material	Case Material ABS	Case Material Aluminum
Keycaps Material	Keycaps Material PBT	Keycaps Material -
Dimensions	Dimensions 38 x 366 x 138 mm	Dimensions 37 x 370 x 146 mm
Weight	Weight 870g	Weight 1850g