Keychron K3 Ultra vs K9 Max
Get the Keychron K3 Ultra for the 2,600 mAh battery and the 8,000 Hz polling rate.
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4.3 (9)4.3 · 9 reviews
from$109at MK
5.0 (2)5.0 · 2 reviews
from$137at Keychron (DE)
Which one should you get?
Get the
Keychron K3 Ultra
Battery
Build quality in the top 30% of 75% boards under $150.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
- No numpad.
Get the
Keychron K9 Max
Build quality in the top 25% of 60% boards under $150.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
- No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
- Compact layout only. No function row, dedicated arrow keys, or numpad.
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 Ultra
Keychron K9 Max
Layout size
75%
60%
Battery
2,600 mAh
1,550 mAh
A larger battery means fewer cables during the day
Max polling rate
8,000 Hz
1,000 Hz
Higher polling helps competitive FPS and does nothing for typing
Case material
ABS, Wood
ABS
Layout standard
ANSI, ISO
ANSI
ISO and JIS exist so regional layouts fit
- Keychron K3 Ultra
- Keychron K9 Max
- Performance
- 8675
- Build quality
- 7575
- Productivity
- 8991
- Customizability
- 8692
- Portability
- 8287
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Low profile
- Switch options: Clicky, Linear, Tactile
- QMK
- VIA
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Keychron K3 Ultra
9 owner reviews
“Portable, match my minimalist setup, great feeling, high quality, durable”
“Meh. I dont like the wood grain and they make it difficult to return or exchange”
Keychron K9 Max
2 owner reviews
“The keyboard sounds and looks good on my desk. It works with my Mac.”
Keychron K3 Ultra vs K9 Max specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
9 of 27 specs differ
Keychron K3 Ultra
Keychron K9 Max
Switch options
Hot-swappable
Mount style
Low profile
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Display
Media keys
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Typing angle
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
ISO layouts by store
Which stores sell ISO-DE, UK, and the other regional layouts.
Keychron K3 Ultra
Keychron
ISO
In stockShips to you
Keychron (DE)
ISO
In stockDoes not ship to you
Keychron K9 Max
No ISO layout at the stores we track.
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
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Lowest price across stores, Amazon excluded.
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