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Head to head · Prices checked Nov 7, 2026

Redragon CASTOR K631 HE vs Varmilo Sword 2 108

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

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.

Get the

Varmilo Sword 2 108

Build quality in the bottom 40% of 100% boards at any price.

Rules this board out

  • Switches are soldered. Swapping them means soldering.

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 HE

Varmilo Sword 2 108

  • Layout size

    65%

    100%

  • Hall effect (magnetic)

    Yes

    No

    Adjustable actuation helps in games and not in normal typing

  • Rapid trigger

    Yes

    No

    Faster resets help in games and not in normal typing

  • Case material

    Plastic

    Aluminum

  • Switch options

    Magnetic

    Clicky

KeebFinder scores

How we score
  • Redragon CASTOR K631 HE
  • Varmilo Sword 2 108
Performance
91
62
Build quality
42
51
Productivity
48
48
Customizability
47
52
Portability
65
42
See every spec side by side

Full specs

Redragon CASTOR K631 HE vs Varmilo Sword 2 108 specs

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

11 of 21 specs differ

Redragon CASTOR K631 HE

Varmilo Sword 2 108

Typing & switches

Switch options

Magnetic
Clicky

Hall effect (magnetic)

Yes
No

Rapid trigger

Yes
No

Mount style

—
Plate Mount

Layout

Layout size

65%
100%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Display

None
None

Media keys

No
Yes

Connectivity & battery

Connection

Wired
—

Max polling rate

8,000 Hz
—

USB-C

Yes
No

Build & materials

Case material

Plastic
Aluminum

Plate material

—
Aluminum

Keycaps

—
PBT

Weight

638 g
—

Dimensions

33 x 323 x 107 mm
—

Backlight

RGB
White

Firmware & software

N-key rollover

No
Yes

Mac & Windows

No
Yes

Extras

Released

2026
2023

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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