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Head to head · Prices checked Nov 10, 2026

Royal Kludge M75 vs Redragon PENUMBRA K687

Get the Redragon PENUMBRA K687 for sound dampening.

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Quick verdict

Which one should you get?

Get the

Royal Kludge M75

Build quality in the top 50% of 75% boards under $100.

Rules this board out

  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.

Get the

Redragon PENUMBRA K687

Sound dampening

Build quality in the top 35% of 75% boards under $100.

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.

Royal Kludge M75

Redragon PENUMBRA K687

  • Connection

    Bluetooth, 2.4 GHz, Wired

    Wired

    Wireless for several devices and wired for lower latency

  • Switch options

    Clicky, Linear

    Linear

  • Display

    OLED

    None

    A case display rather than a typing feature

  • Weight

    900 g

    1,500 g

    Heavier boards stay planted and lighter ones travel

  • Sound dampening

    No

    Yes

KeebFinder scores

How we score
  • Royal Kludge M75
  • Redragon PENUMBRA K687
Performance
66
79
Build quality
66
73
Productivity
74
71
Customizability
74
61
Portability
80
60

What they share

  • Layout size: 75%
  • Hot-swappable
  • Mount style: Gasket Mount
  • Knob
See every spec side by side

Full specs

Royal Kludge M75 vs Redragon PENUMBRA K687 specs

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

11 of 21 specs differ

Royal Kludge M75

Redragon PENUMBRA K687

Typing & switches

Switch options

Clicky, Linear
Linear

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

No
Yes

Layout

Layout size

75%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
Yes

Display

OLED
None

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Wired

Battery

3,750 mAh
Wired only

USB passthrough

Yes
No

USB-C

Yes
Yes

Build & materials

Case material

—
Aluminum

Keycaps

PBT
—

Weight

900 g
1,500 g

Dimensions

42 x 328 x 139 mm
43 x 133 x 43 mm

Backlight

RGB, south-facing
RGB

Firmware & software

N-key rollover

No
Yes

Mac & Windows

Yes
No

Extras

Released

2024
2025

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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