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Head to head · Prices checked Oct 21, 2026

Redragon CASTOR K631 HE vs Cidoo V75 Plus

Get the Redragon CASTOR K631 HE for hall effect and rapid trigger.

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

Cidoo V75 Plus

  • Layout size

    65%

    75%

  • Hall effect (magnetic)

    Yes

    No

  • Rapid trigger

    Yes

    No

  • Connection

    Wired

    Bluetooth, 2.4 GHz, Wired

  • Display

    None

    LED

KeebFinder scores

How we score
  • Redragon CASTOR K631 HE
  • Cidoo V75 Plus
Performance
92
41
Build quality
43
63
Productivity
49
58
Customizability
47
60
Portability
66
72
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.

Cidoo V75 Plus

4.6

10 owner reviews

Praise
“This is a great quality keyboard. It is very solid feeling due to the aluminum body and the foams give it a beautiful sound. The software was pretty straightforward to use and I was able to load images to the mini screen with no problem.”
Christie C.Verified buyer· via Epomaker
Critique
“The keyboard sounds and feels really good. However, the Json file and compatibility with VIA was a terrible experience. I was unable to map any keys. The entire keyboard in VIA is offset, which won't let me map certain keys. I gave up on VIA and reset the…”
Khalid G.Verified buyer· via Epomaker

Full specs

Redragon CASTOR K631 HE vs Cidoo V75 Plus specs

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

10 of 19 specs differ

Redragon CASTOR K631 HE

Cidoo V75 Plus

Typing & switches

Switch options

Magnetic
—

Hall effect (magnetic)

Yes
No

Rapid trigger

Yes
No

Mount style

—
Gasket Mount

Sound dampening

No
Yes

Layout

Layout size

65%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Display

None
LED

Connectivity & battery

Connection

Wired
Bluetooth, 2.4 GHz, Wired

Max polling rate

8,000 Hz
—

Battery

Wired only
3,000 mAh

USB-C

Yes
No

Build & materials

Case material

Plastic
—

Weight

638 g
—

Dimensions

33 x 323 x 107 mm
—

Backlight

RGB
None

Firmware & software

VIA

No
Yes

Extras

Released

2026
2023

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
Cidoo V75 Plus2 stores

  • MechkeysCN

    In stock
    $129Visit

  • AmazonGlobal

    Check price
    ~$129Visit

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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