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Head to head · Prices checked Nov 13, 2026

Keychron K3 HE vs Nuphy Air75 HE

Get the Keychron K3 HE for hot-swappable. Get the Nuphy Air75 HE for the 8,000 Hz polling rate.

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Quick verdict

Which one should you get?

Get the

Keychron K3 HE

Hot-swappable

Build quality in the top 10% of 75% boards under $150.

Rules this board out

  • Magnetic switches only. Standard MX switches will not fit.
  • Low-profile switches and keycaps only. Standard MX keycaps will not fit.
  • North-facing LEDs. Cherry-profile keycaps can hit the switch housing.

Get the

Nuphy Air75 HE

polling rate

Build quality in the bottom 35% of 75% boards under $150.

Rules this board out

  • Magnetic switches only. Standard MX switches will not fit.
  • Low-profile switches and keycaps only. Standard MX keycaps will not fit.
  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
  • No ISO layout. ISO-DE, UK, and other ISO variants are not offered.

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 K3 HE

Nuphy Air75 HE

  • Connection

    Bluetooth, 2.4 GHz, Wired

    Wired

    Wireless for several devices and wired for lower latency

  • Hot-swappable

    Yes

    No

    Switch changes without soldering

  • Max polling rate

    1,000 Hz

    8,000 Hz

    Higher polling helps competitive FPS and does nothing for typing

  • Case material

    ABS, Aluminum, Wood

    Aluminum, Plastic

  • Switch options

    Clicky, Linear, Magnetic, Tactile

    Magnetic

KeebFinder scores

How we score
  • Keychron K3 HE
  • Nuphy Air75 HE
Performance
92
97
Build quality
86
58
Productivity
89
58
Customizability
89
50
Portability
82
60

What they share

  • Layout size: 75%
  • Hall effect (magnetic)
  • Rapid trigger
  • Low profile
  • Sound dampening
See every spec side by side

From real owners

What owners say

Ratings and quotes collected from verified store reviews, including the critical ones.

Keychron K3 HE

5.0

6 owner reviews

Praise
“I am happy with this keyboard! I needed some time to adjust my typing habits, but so far so good.”
Viacheslav M.Verified buyer· via Keychron

Nuphy Air75 HE

4.8

138 owner reviews

Praise
“Nice keyboard with such a great material construction, only the keycaps has a problem, they are a bit too big so there is a lot of missclick the first month”
Zacharie L.Verified buyer· via Nuphy

Full specs

Keychron K3 HE vs Nuphy Air75 HE specs

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

16 of 27 specs differ

Keychron K3 HE

Nuphy Air75 HE

Typing & switches

Switch options

Clicky, Linear, Magnetic, Tactile
Magnetic

Hall effect (magnetic)

Yes
Yes

Rapid trigger

Yes
Yes

Hot-swappable

Yes
No

Mount style

Tray Mount
Plate Mount

Low profile

Yes
Yes

Sound dampening

Yes
Yes

Layout

Layout size

75%
75%

Layout standard

ANSI, ISO, ISO-DE, ISO-ES, ISO-FR, JIS
ANSI

Ergonomics

Standard
Standard

Display

LED
None

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Wired

Max polling rate

1,000 Hz
8,000 HzBetter

Battery

2,600 mAh
Wired only

USB-C

Yes
No

Build & materials

Case material

ABS, Aluminum, Wood
Aluminum, Plastic

Plate material

Aluminum
—

Keycaps

PBT
PBT, PC

Weight

580 g
702 g

Dimensions

25 x 319 x 126 mm
18 x 133 x 316 mm

Typing angle

2°
3°

Backlight

RGB, north-facing
RGB, south-facing

Firmware & software

QMK

Yes
No

VIA

Yes
No

N-key rollover

Yes
Yes

Mac & Windows

Yes
Yes

Extras

Released

2026
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.

Lowest price across stores, Amazon excluded.

For EU buyers

ISO layouts by store

Which stores sell ISO-DE, UK, and the other regional layouts.

Keychron K3 HE

Nuphy Air75 HE

No ISO layout at the stores we track.

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