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Head to head · Prices checked Oct 21, 2026

Redragon CASTOR K631 HE vs Keychron V4

Get the Redragon CASTOR K631 HE for hall effect and rapid trigger. Get the Keychron V4 for hot-swappable.

CASTOR K631 HE Rapid Trigger Gaming Keyboard

Hall effect

Redragon CASTOR K631 HE

from$39at Redragon

Shop nowSee all prices
Keychron V4 QMK Custom Mechanical Keyboard ISO Layout Collection

Hot-swappable

Keychron V4

5.0 · 14 reviews

from$39at Keychron

Shop nowCompare 2 stores

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

Keychron V4

  • Layout size

    65%

    60%

  • Hall effect (magnetic)

    Yes

    No

  • Rapid trigger

    Yes

    No

  • Hot-swappable

    No

    Yes

  • Max polling rate

    8,000 Hz

    1,000 Hz

KeebFinder scores

How we score
  • Redragon CASTOR K631 HE
  • Keychron V4
Performance
92
68
Build quality
43
87
Productivity
49
95
Customizability
47
98
Portability
66
76

What they share

  • Connection: Wired
See every spec side by side

From real owners

What owners say

Ratings and quotes collected from verified store reviews, including the critical ones.

Redragon CASTOR K631 HE

No owner reviews collected yet.

Keychron V4

5.0

14 owner reviews

Praise
“Definitely the best 80 dollar keyboard out right now. Very well lubed and stabbed are tooned well. Unfortunately can't get via to work (VIA isn't accepting the json file)”
Elsa P.Verified buyer· via Keychron

Full specs

Redragon CASTOR K631 HE vs Keychron V4 specs

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

19 of 27 specs differ

Redragon CASTOR K631 HE

Keychron V4

Typing & switches

Switch options

Magnetic
Clicky, Linear, Tactile

Hall effect (magnetic)

Yes
No

Rapid trigger

Yes
No

Hot-swappable

No
Yes

Mount style

—
Plate Mount, Tray Mount

Sound dampening

No
Yes

Screw-in stabilizers

No
Yes

Layout

Layout size

65%
60%

Layout standard

ANSI
ANSI, ISO, ISO-DE, JIS

Ergonomics

Standard
Standard

Knob

No
Yes

Display

None
None

Media keys

No
Yes

Connectivity & battery

Connection

Wired
Wired

Max polling rate

8,000 HzBetter
1,000 Hz

USB-C

Yes
Yes

Build & materials

Case material

Plastic
ABS, Plastic

Plate material

—
Steel

Keycaps

—
ABS, PBT

Weight

638 g
730 g

Dimensions

33 x 323 x 107 mm
20 x 117 x 304 mm

Typing angle

—
4°

Backlight

RGB
RGB, south-facing

Firmware & software

QMK

No
Yes

VIA

No
Yes

Mac & Windows

No
Yes

Extras

Released

2026
2022

Where to buy

Compare prices

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

Lowest price across stores, Amazon excluded.

Redragon CASTOR K631 HE2 stores

  • RedragonCN

    In stock
    $39Visit

  • AmazonGlobal

    Check price
    ~$39Visit
Keychron V45 stores

  • KeychronHK

    In stock
    $39Visit

  • Keychron (DE)DE

    In stock
    $122Visit

  • AmazonGlobal

    Check price
    ~$39Visit

  • Input GearDE

    Out of stock
    $50Visit

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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