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Head to head · Prices checked Oct 31, 2026

Jamesdonkey RS2 4.0 vs Yunzii AL80

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Quick verdict

Which one should you get?

Get the

Jamesdonkey RS2 4.0

Build quality in the top 40% of 96% boards under $100.

Rules this board out

  • Compact full-size layout. The numpad is present, the gaps of a full-size board are not.

Get the

Yunzii AL80

Battery

Build quality in the top 20% of 75% boards under $150.

Rules this board out

  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
  • No numpad.

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 RS2 4.0

Yunzii AL80

  • Layout size

    96%

    75%

  • Battery

    4,000 mAh

    6,000 mAh

    A larger battery means fewer cables during the day

  • Display

    None

    LCD

    A case display rather than a typing feature

  • Weight

    1,150 g

    1,438.5 g

    Heavier boards stay planted and lighter ones travel

  • VIA

    No

    Yes

    GUI remapping without compiling firmware

KeebFinder scores

How we score
  • Jamesdonkey RS2 4.0
  • Yunzii AL80
Performance
58
70
Build quality
71
79
Productivity
93
93
Customizability
82
91
Portability
53
92

What they share

  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Case material: Aluminum
  • Switch options: Linear
  • Mount style: Gasket Mount
  • Knob
See every spec side by side

Full specs

Jamesdonkey RS2 4.0 vs Yunzii AL80 specs

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

10 of 24 specs differ

Jamesdonkey RS2 4.0

Yunzii AL80

Typing & switches

Switch options

Linear
Linear

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Gasket Mount

Sound dampening

Yes
Yes

Layout

Layout size

96%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
Yes

Display

None
LCD

Media keys

Yes
No

Connectivity & battery

Connection

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

Max polling rate

—
1,000 Hz

Battery

4,000 mAh
6,000 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
Aluminum

Keycaps

PBT
PBT

Weight

1,150 g
1,438.5 g

Dimensions

34 x 405 x 138 mm
41 x 138 x 314 mm

Backlight

RGB
RGB, south-facing

Firmware & software

QMK

Yes
Yes

VIA

No
Yes

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

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.

Yunzii AL803 stores

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