Compare KBDFans TOFU TKL vs Keychron J4 Differences Side by Side

Explore the comprehensive side-by-side comparison of the KBDFans TOFU TKL and Keychron J4 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)
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Main differences	Has Magnetic switch options Compatible with both Mac and Windows Connects via USB-C Utilizes Hall effect sensors Supports VIAL configuration Features N-key rollover Includes screw-in stabilizers Uses a Gasket Mount mounting style Supports Bluetooth, 2.4 GHz, Wired, Wireless, Wired only connectivity Equipped with a 1000 mAh battery Weighs about 4900 g Sized at 40 x 360 x 140 mm Made with a Aluminum, Steel, Copper, Brass case Offers No RGB lighting	Has Linear, Tactile, Clicky switch options Provides dedicated media keys Supports QMK firmware Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity Equipped with a 4000 mAh battery Features PBT keycaps Offers Yes, Rgb, North-face, Rgb North-face RGB lighting
Score	Scores Performance: 74.4 Build Quality: 94.8 Productivity: 94.8 Customizability: 78.3 Portability: 70.5	Scores Performance: 70.4 Build Quality: 71.4 Productivity: 74.2 Customizability: 86.9 Portability: 66.4
Name	Name KBDFans TOFU TKL	Name Keychron J4
Release year	Release year 2025	Release year 2025
Switch Options	Switch Options Magnetic	Switch Options Linear, Tactile, Clicky
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, Wired only	Connection Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate	Polling Rate 1000 Hz	Polling Rate 1000 Hz
Battery capacity	Battery capacity 1000 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 Gasket Mount	Mount Style -
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight	Backlight Rgb, North-face
Case Colors	Case Colors	Case Colors
Case Material	Case Material Aluminum, Steel, Copper, Brass	Case Material -
Keycaps Material	Keycaps Material -	Keycaps Material PBT
Dimensions	Dimensions 40 x 360 x 140 mm	Dimensions -
Weight	Weight 4900g	Weight -