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Head to head · Prices checked Oct 21, 2026

Redragon CASTOR K631 HE vs Epomaker RT98

Get the Redragon CASTOR K631 HE for hall effect and rapid trigger. Get the Epomaker RT98 for hot-swappable.

EPOMAKER RT98

Hot-swappable

Epomaker RT98

4.6 · 22 reviews

from$119at Epomaker

Shop nowSee all prices

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

Epomaker RT98

  • Layout size

    65%

    98%

  • Hall effect (magnetic)

    Yes

    No

  • Rapid trigger

    Yes

    No

  • Connection

    Wired

    Bluetooth, 2.4 GHz, Wired

  • Hot-swappable

    No

    Yes

KeebFinder scores

How we score
  • Redragon CASTOR K631 HE
  • Epomaker RT98
Performance
92
77
Build quality
43
72
Productivity
49
84
Customizability
47
78
Portability
66
65
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.

Epomaker RT98

4.6

22 owner reviews

Praise
“High quality parts, seamless web application for the mini TV, just perfection in the form of a keyboard. Epomaker consistently exceeds my expectations every time.”
Jeannine D.Verified buyer· via Epomaker

Full specs

Redragon CASTOR K631 HE vs Epomaker RT98 specs

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

16 of 23 specs differ

Redragon CASTOR K631 HE

Epomaker RT98

Typing & switches

Switch options

Magnetic
Linear, Silent

Hall effect (magnetic)

Yes
No

Rapid trigger

Yes
No

Hot-swappable

No
Yes

Mount style

—
Gasket Mount

Sound dampening

No
Yes

Layout

Layout size

65%
98%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Southpaw

Display

None
Yes

Connectivity & battery

Connection

Wired
Bluetooth, 2.4 GHz, Wired

Max polling rate

8,000 Hz
—

Battery

Wired only
8,000 mAh

USB-C

Yes
Yes

Build & materials

Case material

Plastic
ABS

Keycaps

—
PBT

Weight

638 g
1,200 g

Dimensions

33 x 323 x 107 mm
45 x 390 x 150 mm

Backlight

RGB
RGB, south-facing

Firmware & software

VIA

No
Yes

N-key rollover

No
Yes

Mac & Windows

No
Yes

Extras

Released

2026
2026

Where to buy

Compare prices

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

Lowest price across stores, Amazon excluded.

  • RedragonCN

    In stock
    $39Visit
  • AmazonGlobal

    Check price
    ~$39Visit
  • EpomakerUS

    In stock
    $119Visit
  • AmazonGlobal

    Check price
    Visit

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