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

This comparison helps buyers decide between two compact 65% keyboards from Redragon that share a similar form factor but serve different priorities. The decision is hard because both are priced similarly, making features the main differentiator. The K631 HE targets gamers with its Hall Effect magnetic switches and 8000 Hz polling rate. The K631 Pro appeals to users who want a wireless setup and the ability to hot-swap switches for a personalized feel. This guide focuses on performance, connectivity, and customization to help you pick the right one.

CASTOR K631 HE Rapid Trigger Gaming Keyboard
CASTOR K631 PRO Full-Transparent Mechanical Keyboard

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  • Released in 2026
  • Has Magnetic switch options
  • 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 2022
  • Has Linear switch options
  • Supports hot-swappable switches
  • Features N-key rollover
  • Uses a Bottom Mount mounting style
  • 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
Scores
  • Performance: 91.4
  • Build Quality: 42.3
  • Productivity: 47.1
  • Customizability: 45.7
  • Portability: 65.2
Scores
  • Performance: 70.6
  • Build Quality: 56
  • Productivity: 53.3
  • Customizability: 58.7
  • Portability: 84.8
Name
Redragon CASTOR K631 HE
Name
Redragon CASTOR K631 Pro
Release year
2026
Release year
2022
Switch Options
Magnetic
Switch Options
Linear
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
65%
Layout Size
65%
Layout Standard
ANSI
Layout Standard
ANSI
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Knob Support
 
Knob Support
 
Display Support
 
Display Support
 
Mac/Win Support
 
Mac/Win Support
 
Multi-Media Keys
 
Multi-Media Keys
 
USB-C
 
USB-C
 
USB passthrough
 
USB passthrough
 
Connection
Wired, Wired only
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate
8000 Hz
Polling Rate
-
Battery capacity
-
Battery capacity
1600 mAh
Hall Effect Support
 
Hall Effect Support
 
QMK Support
 
QMK Support
 
VIA Support
 
VIA Support
 
VIAL Support
 
VIAL Support
 
N-Key Rollover
 
N-Key Rollover
 
Rapid Trigger
 
Rapid Trigger
 
Mount Style
-
Mount Style
Bottom Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb
Backlight
 
Rgb
Case Colors
Case Colors
Case Material
Plastic
Case Material
Plastic
Keycaps Material
-
Keycaps Material
ABS
Dimensions
33 x 323 x 107 mm
Dimensions
40 x 309 x 104 mm
Weight
638g
Weight
470g
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Pros and Trade-offs

Your choice comes down to your primary use case. If low latency and competitive gaming are your top priorities, the Redragon CASTOR K631 HE is the better pick with its Hall Effect switches and 8000 Hz polling. If you value wireless convenience and the ability to swap switches without soldering, the Redragon CASTOR K631 Pro is the more versatile keyboard for daily work, travel, and modding.

Redragon CASTOR K631 HE

  • +Hall Effect magnetic switches for near-instantaneous actuation without physical contact.
  • +8000 Hz hyper-polling rate for extremely low latency of up to 0.125 ms.
  • +Rapid Trigger technology allows adjustable actuation points between 0.1 mm and 4.0 mm.
  • +Includes 8 programmable buttons for custom game macros.
  • +Ships with 4 spare switches and a keycap/switch puller for basic tinkering.
  • −Wired only connectivity limits placement flexibility and travel convenience.
  • −Plastic case build material with no hot-swap support for switches.
  • −Heavier than the Pro model at 638 g, making it less portable.
  • −Vendor description notes software is required for rapid trigger features.

Redragon CASTOR K631 Pro

  • +3-mode connectivity including Bluetooth 3.0/5.0 and 2.4 GHz for hassle-free wire-free use.
  • +Hot-swappable PCB supports 99.8%+ of 3-pin and 5-pin switches for easy customization.
  • +Lighter weight of 470 g and includes a detachable strap for portable use.
  • +Contains a 1600 mAh battery for extended wireless sessions.
  • +Features dedicated arrow keys in a 65% layout, as per vendor description.
  • −Lower polling rate than the HE model, not stated but traditional for wireless mechanical keyboards.
  • −ABS keycaps are generally less durable over time compared to other materials.
  • −No reviews available at the time of this comparison.
  • −Music sync RGB mode may drain the 1600 mAh battery faster.

Which Keyboard Is Better for Your Needs?

For gaming, the K631 HE is the clear winner thanks to its Hall Effect switches and 8000 Hz polling. The K631 Pro wins for office and travel due to its multi-mode wireless connectivity and lighter weight. Programmers and content creators can go either way, as both share a 65% layout. Modders should strongly favor the K631 Pro for its hot-swap socket compatibility. The key trade-off is raw gaming speed versus versatile convenience.

GamingRedragon CASTOR K631 HE
  • •Hall Effect magnetic switches eliminate physical input delay.
  • •8000 Hz hyper-polling provides up to 0.125 ms latency for faster response.
  • •Rapid Trigger and adjustable actuation points (0.1-4.0 mm) for competitive play.
  • •Vendor description highlights optimization for Valorant, CSGO, and APEX.
OfficeRedragon CASTOR K631 Pro
  • •3-mode connectivity (wired, BT 3.0/5.0, 2.4 GHz) offers flexibility for different workstations.
  • •Custom Dragon Chant Linear switches are described as quiet, suitable for shared spaces.
  • •Hot-swappable PCB allows switching to even quieter switches for office use.
  • •Lighter weight of 470 g makes it easier to move between desks.
ProgrammingTie
  • •Both have a 65% layout with dedicated arrow keys, useful for code navigation.
  • •The K631 HE offers 8 programmable buttons for macros, as stated by the vendor.
  • •The K631 Pro's hot-swap support lets programmers try different switch types for typing comfort.
  • •Neither keyboard has a screen advantage or differing layout benefits for coding.
TravelRedragon CASTOR K631 Pro
  • •K631 Pro supports Bluetooth 3.0/5.0 and 2.4 GHz wireless, avoiding cable clutter on the go.
  • •It is lighter at 470 g compared to the 638 g K631 HE.
  • •Includes a 1600 mAh battery for wireless operation without needing a USB port.
  • •Detachable portable strap (noted in the product name) aids carrying.
ModdingRedragon CASTOR K631 Pro
  • •K631 Pro features a hot-swappable PCB that is compatible with 99.8%+ of 3-pin and 5-pin switches.
  • •The vendor describes the PCB as free-mod plate mounted, making switch swaps easier.
  • •K631 HE is pre-built and not stated to be hot-swappable, limiting switch changes.
  • •Includes a keycap and switch puller in the box for immediate modding.
Content CreationTie
  • •Both keyboards have RGB lighting which can suit a creator's aesthetic setup.
  • •Both are compact 65% layouts that save desk space for a mouse or tablet.
  • •The K631 HE's 8 programmable buttons could assist with editing shortcuts.
  • •The K631 Pro's wireless capability reduces cable clutter in a studio environment.

Frequently Asked Questions (FAQ)

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