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Compare Redragon CASTOR K631 Pro vs Titan Nation RK R87 Differences Side by Side

Explore the comprehensive side-by-side comparison of the Redragon CASTOR K631 Pro and Titan Nation RK R87 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.

CASTOR K631 PRO (Detachable Strap Version)
66
RK R87 Mechanical Keyboard

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  • Released in 2026
  • Has Linear switch options
  • Available in a 65% layout
  • Connects via USB-C
  • 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
  • Made with a Plastic case
  • Offers Yes, Rgb RGB lighting
  • Released in 2025
  • Compatible with both Mac and Windows
  • Has built-in sound dampening
  • Uses a Gasket Mount mounting style
  • Offers Yes, Rgb, White RGB lighting
Scores
  • Performance: 70.6
  • Build Quality: 56.8
  • Productivity: 54
  • Customizability: 58.5
  • Portability: 84.6
Scores
  • Performance: 53.1
  • Build Quality: 67.3
  • Productivity: 61.4
  • Customizability: 69.2
  • Portability: 44.7
Name
Redragon CASTOR K631 Pro
Name
Titan Nation RK R87
Release year
2026
Release year
2025
Switch Options
Linear
Switch Options
-
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
65%
Layout Size
Unknown
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
Polling Rate
-
Polling Rate
-
Battery capacity
1600 mAh
Battery capacity
-
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
Bottom Mount
Mount Style
Gasket Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb
Backlight
 
Rgb, White
Case Colors
Case Colors
Case Material
Plastic
Case Material
-
Keycaps Material
ABS
Keycaps Material
ABS
Dimensions
40 x 309 x 104 mm
Dimensions
-
Weight
470g
Weight
-
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