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Head to head · Prices checked Nov 8, 2026

8BitDo Retro87 vs Redragon CASTOR K631 HE

Get the 8BitDo Retro87 for hot-swappable. Get the Redragon CASTOR K631 HE for hall effect and rapid trigger.

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Quick verdict

Which one should you get?

Get the

8BitDo Retro87

Hot-swappable

Build quality in the bottom 40% of 80% boards under $150.

Rules this board out

  • No numpad.

Get the

Redragon CASTOR K631 HE

Hall effect

Build quality in the bottom 5% of 65% boards under $50.

Rules this board out

  • Magnetic switches only. Standard MX switches will not fit.
  • 65% layout. No function row and no numpad.

What actually differs

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.

8BitDo Retro87

Redragon CASTOR K631 HE

  • Layout size

    80%

    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

KeebFinder scores

How we score
  • 8BitDo Retro87
  • Redragon CASTOR K631 HE
Performance
63
91
Build quality
53
42
Productivity
73
48
Customizability
68
47
Portability
77
65
See every spec side by side

Full specs

8BitDo Retro87 vs Redragon CASTOR K631 HE specs

Every tracked spec, side by side. Rows marked with a dot differ between the boards.

14 of 23 specs differ

8BitDo Retro87

Redragon CASTOR K631 HE

Typing & switches

Switch options

Clicky
Magnetic

Hall effect (magnetic)

No
Yes

Rapid trigger

No
Yes

Hot-swappable

Yes
No

Mount style

Top Mount
—

Layout

Layout size

80%
65%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
No

Display

None
None

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Wired

Max polling rate

1,000 Hz
8,000 HzBetter

Battery

4,000 mAh
Wired only

USB-C

Yes
Yes

Build & materials

Case material

Aluminum, Plastic
Plastic

Plate material

Aluminum
—

Keycaps

ABS
—

Weight

1,100 g
638 g

Dimensions

46 x 169 x 376 mm
33 x 323 x 107 mm

Backlight

RGB
RGB

Firmware & software

N-key rollover

Yes
No

Mac & Windows

Yes
No

Extras

Released

2024
2026

Where to buy

Compare prices

Live prices from the stores we track, cheapest in-stock offer first.

Prices in USD are converted to your currency and can change at any time. KeebFinder may earn a commission when you buy through these links, at no extra cost to you.

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