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Head to head · Prices checked Oct 30, 2026

Keychron B31 vs Newmen GM840 Pro

Get the Newmen GM840 Pro for hot-swappable and the 2,000 mAh battery.

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Quick verdict

Which one should you get?

Get the

Keychron B31

Build quality in the bottom 20% of 75% boards under $50.

Rules this board out

  • Switches are soldered. Swapping them means soldering.

Get the

Newmen GM840 Pro

Hot-swappable

Build quality in the bottom 5% 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.

Keychron B31

Newmen GM840 Pro

  • Hot-swappable

    No

    Yes

    Switch changes without soldering

  • Battery

    800 mAh

    2,000 mAh

    A larger battery means fewer cables during the day

  • Case material

    ABS, Plastic

    Plastic

  • Switch options

    Clicky, Linear, Tactile

    Clicky, Linear

  • Weight

    520 g

    747 g

    Heavier boards stay planted and lighter ones travel

KeebFinder scores

How we score
  • Keychron B31
  • Newmen GM840 Pro
Performance
59
49
Build quality
52
40
Productivity
69
63
Customizability
46
54
Portability
79
76

What they share

  • Layout size: 75%
  • Connection: Bluetooth, 2.4 GHz, Wired
See every spec side by side

Full specs

Keychron B31 vs Newmen GM840 Pro specs

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

13 of 22 specs differ

Keychron B31

Newmen GM840 Pro

Typing & switches

Switch options

Clicky, Linear, Tactile
Clicky, Linear

Hot-swappable

No
Yes

Mount style

PCB Mount
—

Sound dampening

No
Yes

Layout

Layout size

75%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Display

None
None

Media keys

Yes
No

Connectivity & battery

Connection

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

Max polling rate

1,000 Hz
—

Battery

800 mAh
2,000 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

ABS, Plastic
Plastic

Keycaps

ABS
PBT

Weight

520 g
747 g

Dimensions

26 x 138 x 327 mm
39 x 121 x 31 mm

Typing angle

5°
—

Backlight

None
RGB

Firmware & software

N-key rollover

Yes
No

Mac & Windows

Yes
No

Extras

Released

2026
2022

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.

Keychron B314 stores

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