Compare ACGAM S99 vs Jamesdonkey RS2 4.0 Differences Side by Side

Explore the comprehensive side-by-side comparison of the ACGAM S99 and Jamesdonkey RS2 4.0 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)
Purchase Options
Main differences	Runs at a 1000 Hz polling rate Equipped with a 6000 mAh battery Weighs about 1200 g Sized at 46 x 143 x 386 mm	Comes with a knob Provides dedicated media keys Supports QMK firmware Equipped with a 4000 mAh battery Weighs about 1150 g Sized at 34 x 405 x 138 mm
Score	Scores Performance: 66.2 Build Quality: 69.4 Productivity: 79.7 Customizability: 65.7 Portability: 68.2	Scores Performance: 58.1 Build Quality: 71.1 Productivity: 93.1 Customizability: 82.6 Portability: 53.4
Name	Name ACGAM S99	Name Jamesdonkey RS2 4.0
Release year	Release year 2024	Release year 2024
Switch Options	Switch Options Linear	Switch Options Linear
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 96%	Layout Size 96%, 95%
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 -
Battery capacity	Battery capacity 6000 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 Gasket Mount
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	Case Material Aluminum
Keycaps Material	Keycaps Material PBT	Keycaps Material PBT
Dimensions	Dimensions 46 x 143 x 386 mm	Dimensions 34 x 405 x 138 mm
Weight	Weight 1200g	Weight 1150g