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Head to head · Prices checked Nov 11, 2026

Redragon CASTOR K631 vs Glorious GMMK2

Get the Redragon CASTOR K631 for hot-swappable. Get the Glorious GMMK2 for qmk.

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Quick verdict

Which one should you get?

Get the

Redragon CASTOR K631

Hot-swappable

Build quality in the bottom 35% of 65% boards under $50.

Get the

Glorious GMMK2

QMK

Build quality in the top 25% of 65% boards under $100.

Rules this board out

  • Switches are soldered. Swapping them means soldering.
  • North-facing LEDs. Cherry-profile keycaps can hit the switch housing.

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.

Redragon CASTOR K631

Glorious GMMK2

  • Hot-swappable

    Yes

    No

    Switch changes without soldering

  • Case material

    Plastic

    Aluminum, Plastic

  • Mount style

    Bottom Mount

    Tray Mount

  • Weight

    430 g

    880 g

    Heavier boards stay planted and lighter ones travel

  • QMK

    No

    Yes

    The deep option when you want to remap every key

KeebFinder scores

How we score
  • Redragon CASTOR K631
  • Glorious GMMK2
Performance
71
55
Build quality
57
78
Productivity
55
66
Customizability
61
74
Portability
72
64

What they share

  • Layout size: 65%
  • Connection: Wired
See every spec side by side

Full specs

Redragon CASTOR K631 vs Glorious GMMK2 specs

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

10 of 20 specs differ

Redragon CASTOR K631

Glorious GMMK2

Typing & switches

Switch options

Linear
—

Hot-swappable

Yes
No

Mount style

Bottom Mount
Tray Mount

Sound dampening

No
Yes

Screw-in stabilizers

No
Yes

Layout

Layout size

65%
65%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Display

None
None

Connectivity & battery

Connection

Wired
Wired

USB-C

Yes
Yes

Build & materials

Case material

Plastic
Aluminum, Plastic

Keycaps

ABS
—

Weight

430 g
880 g

Dimensions

—
38 x 313 x 105 mm

Typing angle

—
7°

Backlight

RGB
RGB, north-facing

Firmware & software

QMK

No
Yes

N-key rollover

Yes
No

Extras

Released

2023
2024

Where to buy

Compare prices

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

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Lowest price across stores, Amazon excluded.

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