Head to head · Prices checked Nov 10, 2026

Keychron K3 Max vs Apos NPKC RO75

Get the Apos NPKC RO75 for the 6,000 mAh battery and the 4,000 Hz polling rate.

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Keychron K3 Max

4.3 (15)4.3 · 15 reviews

from$89at MK

Compare 6 stores

Battery

Apos NPKC RO75

No reviews

from$90at Apos

90-day lowLowest price in 90 days

Compare 2 stores

Quick verdict

Which one should you get?

Get the

Keychron K3 Max

Build quality in the top 5% of 75% boards under $100.

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.

$89 at MK

Get the

Apos NPKC RO75

Battery

Build quality in the top 10% of 75% boards under $100.

Rules this board out

No ISO layout. ISO-DE, UK, and other ISO variants are not offered.

$90 at Apos

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 Max

Apos NPKC RO75

Battery
1,550 mAh
6,000 mAh
A larger battery means fewer cables during the day
Low profile
Yes
No
Max polling rate
1,000 Hz
4,000 Hz
Higher polling helps competitive FPS and does nothing for typing
Case material
ABS, Aluminum, Plastic, Wood
Aluminum
Switch options
Clicky, Linear, Tactile
Linear, Tactile

KeebFinder scores

How we score

Keychron K3 Max
Apos NPKC RO75

Performance: 81
86
Build quality: 86
82
Productivity: 94
89
Customizability: 91
82
Portability: 77
91

What they share

Layout size: 75%
Connection: Bluetooth, 2.4 GHz, Wired
Hot-swappable
VIA
Sound dampening
Keycaps: ABS, PBT

See every spec side by side

Full specs

Keychron K3 Max vs Apos NPKC RO75 specs

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

17 of 28 specs differ

Spec

Keychron K3 Max

Apos NPKC RO75

Typing & switches

Switch options

Clicky, Linear, Tactile

Linear, Tactile

Hot-swappable

Yes

Mount style

Plate Mount

Gasket Mount

Low profile

Yes

Sound dampening

Yes

Screw-in stabilizers

Yes

Layout

Layout size

75%

Layout standard

ANSI, ISO, ISO-DE, ISO-Nordic, ISO-SW, ISO-UK

ANSI

Ergonomics

Standard

Display

None

Media keys

Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired

Max polling rate

1,000 Hz

4,000 HzBetter

Battery

1,550 mAh

6,000 mAhBetter

USB-C

Yes

Build & materials

Case material

ABS, Aluminum, Plastic, Wood

Aluminum

Plate material

Aluminum, Plastic, Polycarbonate

FR4, Polycarbonate

Keycaps

ABS, PBT

Weight

580 g

1,680 g

Dimensions

22 x 306 x 116 mm

35 x 312 x 135 mm

Typing angle

3°, 7°

15°

Backlight

RGB, north-facing

RGB

Firmware & software

QMK

Yes

VIA

Yes

VIAL

Yes

N-key rollover

Yes

Mac & Windows

Yes

Extras

Released

2023

2025

For EU buyers

ISO layouts by store

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

Keychron K3 Max

Input Gear
ISO-DE
Out of stockShips to you
Keychron
ISO-DE, ISO-UK, ISO-Nordic, ISO-SW
Out of stockShips to you
Keychron (DE)
ISO-DE, ISO-UK, ISO-SW
In stockDoes not ship to you

Apos NPKC RO75

No ISO layout at the stores we track.

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 K3 Max6 stores