Compare Redragon CASTOR K631 vs CASTOR K631 Pro SE Differences Side by Side

This comparison is for buyers deciding between two very similar 65% Redragon keyboards. The core conflict is between the lower-cost, wired-only K631 and the more expensive, tri-mode wireless K631 Pro SE. Both share a hot-swappable PCB, RGB lighting, and a compact 68-key layout, making the choice hinge almost entirely on your need for wireless freedom versus budget. We'll break down where each model's specific features matter most.

Model
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Rating	0.0 stars (0 reviews)	0.0 stars (0 reviews)
Purchase Options
Main differences	Released in 2022 Has Linear switch options Supports Wired, Wired only connectivity Weighs about 430 g	Released in 2023 Has Clicky, Linear switch options 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
Score	Scores Performance: 71.1 Build Quality: 56.6 Productivity: 54 Customizability: 60.4 Portability: 71.5	Scores Performance: 70.7 Build Quality: 50.8 Productivity: 49.3 Customizability: 56.4 Portability: 83.6
Name	Name Redragon CASTOR K631	Name Redragon CASTOR K631 Pro SE
Release year	Release year 2022	Release year 2023
Switch Options	Switch Options Linear	Switch Options Clicky, Linear
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 65%	Layout Size 65%
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 -	Polling Rate -
Battery capacity	Battery capacity -	Battery capacity 1600 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 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 ABS
Dimensions	Dimensions -	Dimensions 40 x 309 x 104 mm
Weight	Weight 430g	Weight 470g

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Pros and Trade-offs

Your budget and need for wireless freedom dictate this choice. If you exclusively use a desktop PC and want the most affordable path to a hot-swappable 65% keyboard, the Redragon CASTOR K631 is the sensible pick. If you value a clean desk, need to connect to multiple devices, or plan to use the keyboard with a laptop or tablet, the K631 Pro SE's tri-mode wireless capabilities are worth the higher cost.

Redragon CASTOR K631

+Lower cost entry point for a hot-swappable 65% keyboard.
+Includes four extra Outemu red switches in the package for modding.
+Wired-only design eliminates potential wireless latency or battery concerns.
+Comes with a keycap puller, switch puller, and USB-C cable.
+Lightweight at 430 grams.

−Wired-only connectivity limits placement and increases cable clutter.
−Comes with only one linear switch type (Outemu Red) by default.
−Lacks the translucent case design for enhanced RGB diffusion.

Redragon CASTOR K631 Pro SE

+Tri-mode connectivity with USB-C wired, Bluetooth, and 2.4GHz wireless.
+Includes a 1600mAh rechargeable battery for cordless use.
+Features a translucent base that, according to Redragon, enhances RGB lighting effects.
+Comes with a dual-ended USB-C to USB-A/C cable for wider compatibility.
+Offers a choice of linear or clicky switch types from the factory.

−Higher price point compared to the wired model.
−No extra switches are included in the package.
−Slightly heavier at 470 grams due to the internal battery.
−Relies on battery management and may experience wireless interference.

Which Keyboard Is Better for Your Needs?

The K631 Pro SE is the clear choice for mobile and flexible setups, winning in Office, Travel, and Content Creation due to its wireless modes and battery. The standard K631 holds an edge for modders because it includes spare switches and has a lower entry cost. For stationary, performance-focused uses like Gaming and Programming, the keyboards are effectively tied, making the decision purely about connectivity preference versus price.

GamingTie

•Both feature N-key rollover and dedicated arrow keys for FPS gaming.
•Both are hot-swappable and support per-key RGB customization via software.
•The K631 Pro SE offers a 2.4GHz wireless mode for a cable-free desk, while the K631 provides a simpler, wired-only connection.

OfficeRedragon CASTOR K631 Pro SE

•The K631 Pro SE's Bluetooth connectivity allows easy pairing with multiple devices like laptops and tablets.
•Its included custom linear switches are described as quiet, which is suitable for shared workspaces.
•The tri-mode flexibility reduces cable clutter on a desk.

ProgrammingTie

•Both use the same 68-key ANSI layout with dedicated arrow keys.
•Both are hot-swappable, allowing programmers to customize switch feel.
•Both support macro programming through Redragon's software for coding shortcuts.

TravelRedragon CASTOR K631 Pro SE

•The K631 Pro SE's wireless modes eliminate the need to manage a cable while on the go.
•Its 1600mAh battery provides cordless operation.
•Both are similarly compact and lightweight, with the Pro SE weighing 470g versus the K631's 430g.

ModdingRedragon CASTOR K631

•The K631 includes four extra red switches in the box for immediate experimentation.
•Both keyboards feature the same free-mod plate-mounted hot-swappable PCB compatible with 3-pin and 5-pin switches.
•The lower initial cost of the K631 leaves more budget for aftermarket switches and keycaps.

Content CreationRedragon CASTOR K631 Pro SE

•Wireless connectivity via Bluetooth or 2.4GHz offers a cleaner setup for video recording or streaming.
•The K631 Pro SE's translucent base, according to its description, enhances RGB lighting effects for a more visually appealing backdrop.
•Macro support via software is available on both for binding editing shortcuts.