Compare Redragon CASTOR K631 HE vs UCAL K673 Differences Side by Side

This comparison is for buyers deciding between two distinct Redragon keyboards at different price points. The choice is difficult because one prioritizes raw gaming performance with cutting-edge features, while the other offers greater daily versatility with wireless options and a more refined typing experience. Your decision hinges on whether you value ultra-low latency for gaming or the convenience of a wireless, feature-rich board for mixed use.

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Purchase Options
Main differences	Released in 2026 Has Magnetic switch options Available in a 65% layout Utilizes Hall effect sensors Enables rapid trigger functionality Supports Wired, Wired only connectivity Runs at a 8000 Hz polling rate Weighs about 638 g Sized at 33 x 323 x 107 mm	Released in 2025 Available in a 75% layout Comes with a knob Provides dedicated media keys Has built-in sound dampening Uses a Gasket Mount mounting style Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity Runs at a 1000 Hz polling rate Equipped with a 4000 mAh battery Weighs about 1240 g Sized at 104 x 335 mm
Score	Scores Performance: 91.4 Build Quality: 42.3 Productivity: 47.1 Customizability: 45.7 Portability: 65.2	Scores Performance: 62.1 Build Quality: 58.1 Productivity: 63.3 Customizability: 54.1 Portability: 73.5
Name	Name Redragon CASTOR K631 HE	Name Redragon UCAL K673
Release year	Release year 2026	Release year 2025
Switch Options	Switch Options Magnetic	Switch Options -
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 65%	Layout Size 75%
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 Wired, Wired only	Connection Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate	Polling Rate 8000 Hz	Polling Rate 1000 Hz
Battery capacity	Battery capacity -	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	Backlight Rgb
Case Colors	Case Colors	Case Colors
Case Material	Case Material Plastic	Case Material Plastic
Keycaps Material	Keycaps Material -	Keycaps Material -
Dimensions	Dimensions 33 x 323 x 107 mm	Dimensions 104 x 335 mm
Weight	Weight 638g	Weight 1240g

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Pros and Trade-offs

Select the Redragon CASTOR K631 HE if your primary goal is achieving the highest possible performance in competitive gaming and you don't mind a wired connection. Opt for the Redragon UCAL K673 if you need a versatile wireless keyboard for office, programming, or content creation, valuing its connectivity options, multimedia knob, and quieter typing experience over ultimate gaming latency.

Redragon CASTOR K631 HE

+8000 Hz polling rate for minimal input latency in games.
+Hall effect magnetic switches with rapid trigger support for adjustable actuation.
+Includes four spare switches and a keycap puller.
+Lower price point for the feature set.
+Very lightweight at 638 grams.

−Wired-only connectivity limits placement and device switching.
−Lacks the dedicated multimedia controls found on the UCAL K673.
−No mention of internal sound dampening materials in its description.

Redragon UCAL K673

+Tri-mode wireless connectivity (Bluetooth, 2.4GHz, and wired).
+Includes a control knob for media and lighting adjustments.
+Gasket mount with sound dampening foam and silicone pad for a quieter typing feel.
+Larger 4000mAh battery for extended wireless use.
+75% layout provides more keys than a 65% while remaining compact.

−Much heavier at 1240g, reducing portability.
−Lower 1000 Hz polling rate compared to the CASTOR's 8000 Hz.
−Higher price point than the CASTOR K631 HE.

Which Keyboard Is Better for Your Needs?

The CASTOR K631 HE is the definitive choice for competitive gaming due to its high-performance specs. For nearly all other scenarios, including office work, programming, and content creation, the UCAL K673's wireless flexibility, additional features, and quieter build make it more suitable. The CASTOR's advantage in portability is countered by the UCAL's broader utility for daily productivity tasks.

GamingRedragon CASTOR K631 HE

•Higher 8000 Hz polling rate versus 1000 Hz for lower input latency.
•Hall effect magnetic switches with software-adjustable rapid trigger technology.
•The manufacturer claims an 8x faster response time with 0.125ms latency.

OfficeRedragon UCAL K673

•Tri-mode connectivity (Bluetooth, 2.4GHz, wired) for flexible device switching.
•Includes a control knob for media and lighting adjustments.
•Sound dampening with 3.5mm PO foam and a silicone pad for quieter typing.

ProgrammingRedragon UCAL K673