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Compare Royal Kludge RK84 vs Redragon CASTOR K631 Pro SE Differences Side by Side

This comparison is for buyers deciding between two popular budget wireless mechanical keyboards with different layout philosophies. The Royal Kludge RK84 offers a 75% layout with dedicated function and navigation keys, while the Redragon CASTOR K631 Pro SE uses a more compact 65% form factor. Both are hot-swappable and offer triple-mode connectivity, making the choice a matter of layout preference versus ultimate portability.

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RK84 75% Wired Mechanical Keyboard
CASTOR K631 PRO SE Wireless Green Gaming Keyboard

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  • Released in 2021
  • Has Clicky, Tactile, Linear, Silent switch options
  • Available in a 75% layout
  • Compatible with both Mac and Windows
  • Provides dedicated media keys
  • Offers a USB passthrough port
  • Has built-in sound dampening
  • Runs at a 1000 Hz polling rate
  • Equipped with a 3750 mAh battery
  • Weighs about 803.5 g
  • Sized at 41 x 125 x 315 mm
  • Features ABS, PBT keycaps
  • Released in 2023
  • Has Clicky, Linear switch options
  • Available in a 65% layout
  • Features N-key rollover
  • Uses a Bottom Mount mounting style
  • Equipped with a 1600 mAh battery
  • Weighs about 470 g
  • Sized at 40 x 309 x 104 mm
  • Features ABS keycaps
Scores
  • Performance: 62.7
  • Build Quality: 50.5
  • Productivity: 77.9
  • Customizability: 69.7
  • Portability: 81.6
Scores
  • Performance: 70.7
  • Build Quality: 50.9
  • Productivity: 49.5
  • Customizability: 56.4
  • Portability: 83.5
Name
Royal Kludge RK84
Name
Redragon CASTOR K631 Pro SE
Release year
2021
Release year
2023
Switch Options
Clicky, Tactile, Linear, Silent
Switch Options
Clicky, Linear
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
75%
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
Bluetooth, 2.4 GHz, Wired, Wireless
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate
1000 Hz
Polling Rate
-
Battery capacity
3750 mAh
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
ABS, PBT
Keycaps Material
ABS
Dimensions
41 x 125 x 315 mm
Dimensions
40 x 309 x 104 mm
Weight
803.5g
Weight
470g
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Pros and Trade-offs

Your primary layout need dictates the choice here. If you require dedicated arrow keys, function row, and the utility of USB passthrough ports for a stationary setup, the Royal Kludge RK84 is the logical pick. If maximizing desk space and portability is your goal, and you are comfortable using function layers for missing keys, the Redragon CASTOR K631 Pro SE's smaller 65% form factor is more suitable. Both represent good value with hot-swap capability at a similar price point.

Royal Kludge RK84

  • +75% layout retains dedicated arrow keys, function row, and navigation cluster.
  • +Large 3750mAh battery for extended wireless use.
  • +Includes two USB 2.0 passthrough ports for peripheral connectivity.
  • +Comes with screw-in stabilizers, magnetic pad feet, and four replacement switches.
  • +Offers a choice of clicky, tactile, and linear switch types.
  • −Heavier at 803.5g and slightly larger than the 65% alternative.
  • −Vendor reviews mention potential firmware and wireless connectivity issues.
  • −Uses ABS keycaps which may develop shine over time.

Redragon CASTOR K631 Pro SE

  • +More compact and portable 65% layout with a lighter 470g weight.
  • +Vendor description highlights N-key rollover and a 'free-mod' hot-swap PCB with high switch compatibility.
  • +Includes a 2-in-1 USB-C to USB-C/A cable for flexible wired connections.
  • +Features a translucent base for enhanced RGB lighting effects.
  • −Smaller 1600mAh battery requires more frequent charging.
  • −Lacks dedicated function row and some navigation keys, relying on layers.
  • −Switch options are limited to clicky and linear, with no tactile option listed.
  • −Vendor reviews indicate potential issues with mode-switching after firmware updates.

Which Keyboard Is Better for Your Needs?

The RK84 is the stronger choice for productivity-focused tasks like office work, programming, and content creation due to its more complete layout and extra ports. The K631 Pro SE wins for travel and has a slight edge for gaming due to its lighter weight and mentioned N-key rollover. For keyboard modding, both offer solid, comparable foundations with their hot-swap sockets and included tools.

GamingRedragon CASTOR K631 Pro SE
  • •The K631 Pro SE includes N-key rollover, which the RK84's listing does not mention.
  • •Its 65% layout and lighter 470g weight can free up more desk space for mouse movement.
  • •The vendor description highlights it as 'dedicated for FPS gamer'.
OfficeRoyal Kludge RK84
  • •The RK84's 75% layout retains dedicated arrow keys and function row for easier spreadsheet navigation.
  • •It includes two USB 2.0 passthrough ports for connecting peripherals like a mouse.
  • •Its larger 3750mAh battery requires less frequent charging for all-day use.
ProgrammingRoyal Kludge RK84
  • •The RK84's layout includes dedicated arrow keys and a function row, which are often used for IDE shortcuts.
  • •It offers a wider selection of switch types, including tactile options not listed for the K631 Pro SE.
  • •The vendor page mentions software support for key remapping.
TravelRedragon CASTOR K631 Pro SE
  • •The K631 Pro SE is significantly lighter at 470g compared to the RK84's 803.5g.
  • •Its 65% layout has smaller dimensions (309 x 104 x 40mm vs 315 x 125 x 41mm), making it more bag-friendly.
  • •The vendor includes a 2-in-1 USB-C/A cable for easier connection to various devices.
ModdingTie
  • •Both keyboards feature hot-swappable PCBs for easy switch replacement.
  • •Both include switch and keycap pullers in the box.
  • •The RK84 includes screw-in stabilizers, while the K631 Pro SE vendor page emphasizes a 'free-mod plate mounted PCB' and 99.8%+ switch compatibility.
Content CreationRoyal Kludge RK84
  • •The RK84's dedicated media keys, accessed via secondary FN keys, provide quicker control for video/audio editing.
  • •The USB passthrough ports allow for easy connection of a drawing tablet or other peripherals.
  • •The larger layout may be more comfortable for prolonged typing sessions during script writing.

Frequently Asked Questions (FAQ)

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