Compare Keychron J4 QMK vs Yunzii B87 Differences Side by Side

Explore the comprehensive side-by-side comparison of the Keychron J4 QMK and Yunzii B87 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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Rating	0.0 stars (0 reviews)	0.0 stars (0 reviews)
Purchase Options
Main differences	Released in 2025 Weighs about 870 g Sized at 38 x 366 x 138 mm Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting	Released in 2024 Has Linear, Clicky, Tactile switch options Supports VIA configuration Uses a Gasket Mount mounting style Weighs about 1128 g Sized at 46 x 147 x 373 mm Offers Yes, Rgb, South-face, Rgb South-face RGB lighting
Score	Scores Performance: 79.1 Build Quality: 60.8 Productivity: 84.5 Customizability: 74.6 Portability: 73.3	Scores Performance: 81.6 Build Quality: 77.3 Productivity: 89 Customizability: 86.7 Portability: 73
Name	Name Keychron J4 QMK	Name Yunzii B87
Release year	Release year 2025	Release year 2024
Switch Options	Switch Options -	Switch Options Linear, Clicky, Tactile
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 Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate	Polling Rate 1000 Hz	Polling Rate 1000 Hz
Battery capacity	Battery capacity 4000 mAh	Battery capacity 4000 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 Gasket Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb, White, North-face	Backlight Rgb, South-face
Case Colors	Case Colors	Case Colors
Case Material	Case Material ABS	Case Material ABS
Keycaps Material	Keycaps Material PBT	Keycaps Material PBT
Dimensions	Dimensions 38 x 366 x 138 mm	Dimensions 46 x 147 x 373 mm
Weight	Weight 870g	Weight 1128g