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Head to head · Prices checked Nov 7, 2026

HMX GB40 vs PromoType Arterlier Lin Curve Pack

Get the HMX GB40 for hot-swappable and sound dampening.

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Quick verdict

Which one should you get?

Get the

HMX GB40

Hot-swappable

Build quality in the top 50% of 40% boards under $150.

Rules this board out

  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
$130 at MK

Get the

PromoType Arterlier Lin Curve Pack

Build quality in the bottom 5% of 40% boards under $150.

Rules this board out

  • Switches are soldered. Swapping them means soldering.
$40 at zFrontier

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.

HMX GB40

PromoType Arterlier Lin Curve Pack

  • Hot-swappable

    Yes

    No

    Switch changes without soldering

  • Sound dampening

    Yes

    No

  • Keycaps

    ABS, PBT

    PC

  • Backlight

    RGB, south-facing

    None

    RGB for looks and low light rather than speed

  • Released

    2025

    2026

KeebFinder scores

How we score
  • HMX GB40
  • PromoType Arterlier Lin Curve Pack
Performance
58
43
Build quality
69
42
Productivity
57
58
Customizability
57
40
Portability
85
61

What they share

  • Layout size: 40%
See every spec side by side

Full specs

HMX GB40 vs PromoType Arterlier Lin Curve Pack specs

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

6 of 14 specs differ

HMX GB40

PromoType Arterlier Lin Curve Pack

Typing & switches

Hot-swappable

Yes
No

Mount style

Gasket Mount
—

Sound dampening

Yes
No

Layout

Layout size

40%
40%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Display

None
None

Connectivity & battery

Connection

Bluetooth, Wired
—

USB-C

Yes
No

Build & materials

Case material

Aluminum
—

Keycaps

ABS, PBT
PC

Typing angle

6°
—

Backlight

RGB, south-facing
None

Extras

Released

2025
2026

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.

HMX GB402 stores
PromoType Arterlier Lin Curve Pack2 stores

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