Head to head · Prices checked Oct 29, 2026

Keychron K2 Ultra vs Nuphy Air75 V3

Get the Keychron K2 Ultra for the 8,000 Hz polling rate. Get the Nuphy Air75 V3 for knob.

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polling rate

Keychron K2 Ultra

4.0 · 4 reviews

from$119at MK

Compare 4 stores

Knob

Nuphy Air75 V3

No reviews

from$135at Input Gear

Compare 4 stores

Quick verdict

Which one should you get?

Get the

Keychron K2 Ultra

polling rate

Build quality in the top 10% 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.
Missing ISO-DE, ISO-UK. The other board is sold in those layouts.

$119 at MK

Get the

Nuphy Air75 V3

Knob

Build quality in the top 5% of 75% boards under $150.

Rules this board out

Low-profile switches and keycaps only. Standard MX keycaps will not fit.
North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
Missing ISO-ES, ISO-IT. The other board is sold in those layouts.

$135 at Input Gear

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 K2 Ultra

Nuphy Air75 V3

Low profile
No
Yes
Max polling rate
8,000 Hz
1,000 Hz
Higher polling helps competitive FPS and does nothing for typing
Case material
ABS, Aluminum
ABS, Aluminum, Plastic, Polycarbonate
Switch options
Clicky, Linear, Tactile
Clicky, Linear, Low-profile 3.0, Mechanical, Tactile
Knob
No
Yes

KeebFinder scores

How we score

Keychron K2 Ultra
Nuphy Air75 V3

Performance: 90
82
Build quality: 86
88
Productivity: 94
97
Customizability: 92
98
Portability: 82
82

What they share

Layout size: 75%
Connection: Bluetooth, 2.4 GHz, Wired
Hot-swappable
Battery: 4,000 mAh
Mount style: Gasket Mount
QMK

See every spec side by side

Full specs

Keychron K2 Ultra vs Nuphy Air75 V3 specs

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

10 of 28 specs differ

Spec

Keychron K2 Ultra

Nuphy Air75 V3

Typing & switches

Switch options

Clicky, Linear, Tactile

Clicky, Linear, Low-profile 3.0, Mechanical, Tactile

Hot-swappable

Yes

Mount style

Gasket Mount

Low profile

Yes

Sound dampening

Yes

Screw-in stabilizers

Yes

Layout

Layout size

75%

Layout standard

ANSI, ISO, ISO-ES, ISO-FR, ISO-IT

ANSI, ISO, ISO-DE, ISO-FR, ISO-UK, JIS

Ergonomics

Standard

Knob

Yes

Display

None

Media keys

Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired

Max polling rate

8,000 HzBetter

1,000 Hz

Battery

4,000 mAh

USB-C

Yes

Build & materials

Case material

ABS, Aluminum

ABS, Aluminum, Plastic, Polycarbonate

Plate material

Steel

Aluminum, Polycarbonate

Keycaps

PBT

Weight

1,084 g

750 g

Dimensions

31 x 312 x 122 mm

13 x 319 x 129 mm

Typing angle

—

10°, 5°

Backlight

RGB, south-facing

Firmware & software

QMK

Yes

VIA

Yes

N-key rollover

Yes

Mac & Windows

Yes

Extras

Released

2026

2024

For EU buyers

ISO layouts by store

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

Keychron K2 Ultra

Keychron (DE)
ISO-FR, ISO-ES, ISO-IT
In stockDoes not ship to you

Nuphy Air75 V3

Input Gear
ISO-DE
In stockShips to you
Input Gear
ISO-FR
In stockShips to you
Input Gear
ISO-DE
In stockShips to you

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.

Keychron K2 Ultra4 stores