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Head to head · Prices checked Nov 10, 2026

Jamesdonkey R4 vs Mxrskey CK820

Get the Jamesdonkey R4 for the 4,000 mAh battery and qmk. Get the Mxrskey CK820 for sound dampening and screw-in stabilizers.

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Quick verdict

Which one should you get?

Get the

Jamesdonkey R4

Battery

Build quality in the bottom 50% of 75% boards under $200.

Rules this board out

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

Get the

Mxrskey CK820

Sound dampening

Build quality in the top 20% of 75% boards under $200.

Rules this board out

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

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.

Jamesdonkey R4

Mxrskey CK820

  • Battery

    4,000 mAh

    3,000 mAh

    A larger battery means fewer cables during the day

  • Weight

    1,900 g

    960 g

    Heavier boards stay planted and lighter ones travel

  • QMK

    Yes

    No

    The deep option when you want to remap every key

  • Sound dampening

    No

    Yes

  • Screw-in stabilizers

    No

    Yes

    Easier to tune than the plate-mount stabs you get prebuilt

KeebFinder scores

How we score
  • Jamesdonkey R4
  • Mxrskey CK820
Performance
54
68
Build quality
67
80
Productivity
63
91
Customizability
79
85
Portability
77
83

What they share

  • Layout size: 75%
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Case material: Aluminum
  • Mount style: Gasket Mount
  • Knob
See every spec side by side

Full specs

Jamesdonkey R4 vs Mxrskey CK820 specs

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

9 of 22 specs differ

Jamesdonkey R4

Mxrskey CK820

Typing & switches

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

No
Yes

Screw-in stabilizers

No
Yes

Layout

Layout size

75%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
Yes

Display

None
None

Media keys

Yes
Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Bluetooth, 2.4 GHz, Wired

Battery

4,000 mAhBetter
3,000 mAh

USB-C

No
Yes

Build & materials

Case material

Aluminum
Aluminum

Plate material

—
Plastic

Keycaps

PBT
—

Weight

1,900 g
960 g

Dimensions

45 x 150 x 329 mm
30 x 105 x 346 mm

Backlight

RGB, south-facing
RGB, south-facing

Firmware & software

QMK

Yes
No

Mac & Windows

No
Yes

Extras

Released

2024
2022

Where to buy

Compare prices

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

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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