Compare Redragon CASTOR K631 Pro vs FIZZ K617ES Differences Side by Side

Explore the comprehensive side-by-side comparison of the Redragon CASTOR K631 Pro and Redragon FIZZ K617ES 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 2022 Has Linear switch options Available in a 65% layout Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity Equipped with a 1600 mAh battery Weighs about 470 g Sized at 40 x 309 x 104 mm Features ABS keycaps	Released in 2025 Available in a 60% layout Supports Wired, Wired only connectivity Runs at a 1000 Hz polling rate Weighs about 430 g Sized at 36 x 292 x 99 mm
Score	Scores Performance: 70.4 Build Quality: 55.7 Productivity: 53 Customizability: 58.2 Portability: 84.9	Scores Performance: 70.7 Build Quality: 56.2 Productivity: 53.5 Customizability: 58.9 Portability: 71.1
Name	Name Redragon CASTOR K631 Pro	Name Redragon FIZZ K617ES
Release year	Release year 2022	Release year 2025
Switch Options	Switch Options Linear	Switch Options -
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 65%	Layout Size 60%
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 Wired, Wired only
Polling Rate	Polling Rate -	Polling Rate 1000 Hz
Battery capacity	Battery capacity 1600 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 Bottom Mount	Mount Style Bottom 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 Plastic	Case Material Plastic
Keycaps Material	Keycaps Material ABS	Keycaps Material -
Dimensions	Dimensions 40 x 309 x 104 mm	Dimensions 36 x 292 x 99 mm
Weight	Weight 470g	Weight 430g