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Head to head · Prices checked Oct 21, 2026

Jamesdonkey A3 vs Newmen GM840 Pro

Get the Jamesdonkey A3 for the 3,000 mAh battery and knob.

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 A3

Newmen GM840 Pro

  • Battery

    3,000 mAh

    2,000 mAh

  • Case material

    ABS, PBT, Plastic, Polycarbonate

    Plastic

  • Switch options

    Clicky, Linear, Tactile

    Clicky, Linear

  • Knob

    Yes

    No

  • Weight

    1,000 g

    747 g

KeebFinder scores

How we score
  • Jamesdonkey A3
  • Newmen GM840 Pro
Performance
62
49
Build quality
66
41
Productivity
91
63
Customizability
85
54
Portability
79
76

What they share

  • Layout size: 75%
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Sound dampening
  • Keycaps: PBT
See every spec side by side

Full specs

Jamesdonkey A3 vs Newmen GM840 Pro specs

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

10 of 23 specs differ

Jamesdonkey A3

Newmen GM840 Pro

Typing & switches

Switch options

Clicky, Linear, Tactile
Clicky, Linear

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
—

Sound dampening

Yes
Yes

Screw-in stabilizers

Yes
No

Layout

Layout size

75%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
No

Display

None
None

Media keys

Yes
No

Connectivity & battery

Connection

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

Battery

3,000 mAhBetter
2,000 mAh

USB-C

Yes
Yes

Build & materials

Case material

ABS, PBT, Plastic, Polycarbonate
Plastic

Plate material

Polycarbonate
—

Keycaps

PBT
PBT

Weight

1,000 g
747 g

Dimensions

40 x 136 x 321 mm
39 x 121 x 31 mm

Backlight

RGB
RGB

Firmware & software

N-key rollover

Yes
No

Mac & Windows

Yes
No

Extras

Released

2022
2022

Where to buy

Compare prices

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

Lowest price across stores, Amazon excluded.

  • MechkeysCN

    In stock
    $89Visit
  • AmazonGlobal

    Check price
    ~$89Visit
  • WhatGeekCN

    Out of stock
    $89Visit
  • MechkeysCN

    In stock
    $55Visit
  • AmazonGlobal

    Check price
    ~$55Visit

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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