Nuphy Air75 V2 vs Redragon CASTOR K631 HE
Get the Nuphy Air75 V2 for hot-swappable. Get the Redragon CASTOR K631 HE for hall effect and rapid trigger.
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Which one should you get?
Get the
Nuphy Air75 V2
Hot-swappable
Build quality in the top 15% of 75% boards under $100.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
- No numpad.
Get the
Redragon CASTOR K631 HE
Hall effect
Build quality in the bottom 5% of 65% boards under $50.
- Magnetic switches only. Standard MX switches will not fit.
- 65% layout. No function row and no numpad.
The differences that matter
Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.
Nuphy Air75 V2
Redragon CASTOR K631 HE
Layout size
75%
65%
Hall effect (magnetic)
No
Yes
Adjustable actuation helps in games and not in normal typing
Rapid trigger
No
Yes
Faster resets help in games and not in normal typing
Connection
Bluetooth, 2.4 GHz, Wired
Wired
Wireless for several devices and wired for lower latency
Hot-swappable
Yes
No
Switch changes without soldering
- Nuphy Air75 V2
- Redragon CASTOR K631 HE
- Performance
- 8191
- Build quality
- 8042
- Productivity
- 8848
- Customizability
- 9447
- Portability
- 7965
Nuphy Air75 V2 vs Redragon CASTOR K631 HE specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
19 of 27 specs differ
Nuphy Air75 V2
Redragon CASTOR K631 HE
Switch options
Hall effect (magnetic)
Rapid trigger
Hot-swappable
Low profile
Sound dampening
Layout size
Layout standard
Ergonomics
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Typing angle
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
Compare prices
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