Keychron K2 Ultra vs K3 HE8K or Magnetic Switches
Choose the K2 Ultra for 8000 Hz polling and broader switch customization, or the K3 HE for magnetic Rapid Trigger features and a much lighter low-profile design.
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4.0 · 4 reviews
from$119at MK
4.4 · 8 reviews
from$119at Keychron
Which one should you get?
Get the
Keychron K2 Ultra
Battery
Build quality in the top 10% of 75% boards under $150.
- 8000 Hz polling rate in wired and 2.4 GHz modes.
- 4000 mAh battery, with vendor-listed runtime up to 760 hours when backlighting is off.
- Hot-swappable mechanical switches with Red, Brown, and Banana options listed by Keychron.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
- Missing ISO-DE. The other board is sold in those layouts.
Get the
Keychron K3 HE
Hall effect
Build quality in the top 10% of 75% boards under $150.
- Hall Effect magnetic switches support Rapid Trigger and adjustable actuation from 0.2 to 2.9 mm.
- Low-profile 75% layout weighs 575g and uses aluminum with wood accents.
- North-facing RGB, an LED screen, and a 2° typing angle are listed.
- 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.
- Missing ISO-IT. The other board is sold in those layouts.
Pick the K2 Ultra if you want 8000 Hz polling in wired and 2.4 GHz modes, a larger battery, and more conventional mechanical switch customization. Choose the K3 HE if magnetic Rapid Trigger controls, adjustable actuation, and a much lighter low-profile build matter more than standard MX switch and keycap flexibility.
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
Keychron K3 HE
Hall effect (magnetic)
No
Yes
Adjustable actuation helps in games and not in normal typing
Rapid trigger
No
Yes
Faster resets help in games and not in normal typing
Battery
4,000 mAh
2,600 mAh
A larger battery means fewer cables during the day
Low profile
No
Yes
Max polling rate
8,000 Hz
1,000 Hz
Higher polling helps competitive FPS and does nothing for typing
- Keychron K2 Ultra
- Keychron K3 HE
- Performance
- 9092
- Build quality
- 8686
- Productivity
- 9488
- Customizability
- 9289
- Portability
- 8282
- Layout size: 75%
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- QMK
- VIA
- Sound dampening
What will you mostly use it for?
The K3 HE takes the gaming and travel picks, thanks to its magnetic input features and lighter low-profile chassis. The K2 Ultra leads office, programming, and modding comparisons with its larger battery, mechanical switch options, and QMK plus VIA support. Content creation leans toward the K2 Ultra for its multimedia keys and larger battery, though the K3 HE's multi-action keys and analog mode may fit specialized workflows. Both provide three connection modes and compact 75% layouts.
Pick the Keychron K3 HE
- The K3 HE has Hall Effect magnetic switches with Rapid Trigger and adjustable actuation from 0.2 to 2.9 mm.
- Its Last Key Priority, Snap Click, and four-action-per-key features target configurable in-game inputs.
- The K2 Ultra offers 8000 Hz polling over wired and 2.4 GHz, compared with the K3 HE's 1000 Hz in those modes.
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Keychron K2 Ultra
4 owner reviews
“very compact, build quality is great, and I don't even feel any latency when using the keyboard wireless.”
“The only "zmk" support is from the launcher itself and its missing most of the ZMK features. For example Combos!”
Keychron K3 HE
8 owner reviews
“I am happy with this keyboard! I needed some time to adjust my typing habits, but so far so good.”
“please add a custom firmware file in your as the app can not recognize the keyboard and apparently doesn't have a correct firmware. the reset buttons do not work as well”
Keychron K2 Ultra vs K3 HE specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
16 of 29 specs differ
Keychron K2 Ultra
Keychron K3 HE
Switch options
Hall effect (magnetic)
Rapid trigger
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 K2 Ultra
Keychron (DE)
ISO-FR, ISO-ES, ISO-IT
In stockDoes not ship to you
Keychron K3 HE
Keychron
ISO-DE
In stockShips to you
Keychron (DE)
ISO-DE, ISO-FR, ISO-ES
In stockDoes not ship to you
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
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Lowest price across stores, Amazon excluded.
Keychron K2 Ultra vs K3 HE: your questions
The K3 HE is the stronger fit for gaming features such as Rapid Trigger, adjustable actuation, Last Key Priority, and analog mode. The K2 Ultra instead offers a higher listed polling rate of 8000 Hz in wired and 2.4 GHz modes, compared with 1000 Hz for the K3 HE in those modes.
Yes. The K2 Ultra lists 8000 Hz in wired and 2.4 GHz modes, while the K3 HE lists 1000 Hz in wired and 2.4 GHz modes. Both list 125 Hz over Bluetooth.
The K2 Ultra uses hot-swappable mechanical switches and is offered with Red, Brown, or Banana options. The K3 HE uses Hall Effect low-profile magnetic switches and its hot-swap sockets accept only Keychron Ultra-Fast Lime low-profile magnetic switches.
No. The K3 HE is specified for low-profile switches and keycaps, and standard MX keycaps will not fit. The K2 Ultra uses OSA double-shot PBT keycaps and its compatibility rules do not list this limitation.
The K3 HE weighs 575g, while the K2 Ultra weighs 1084g. The K3 HE also has a low-profile design, making it the more weight-conscious option based on these listed dimensions and weights.
Keychron lists up to 760 hours for the K2 Ultra with 8K polling and backlighting off, and up to 225 hours at the lowest RGB brightness. Actual runtime can vary with usage.
The K3 HE has a 2600 mAh battery, with Keychron listing up to 55 hours of wireless working time. The vendor notes that actual results may vary with use.
Yes. Both keyboards support Bluetooth, 2.4 GHz wireless, and wired USB-C connections. Both also list 125 Hz polling over Bluetooth.
The K2 Ultra lists ISO, ISO-ES, ISO-FR, ISO-IT, and ANSI layouts, among others. The K3 HE lists ISO, ISO-DE, ISO-ES, ISO-FR, ANSI, and JIS, so choose the K2 Ultra for ISO-IT or the K3 HE for ISO-DE or JIS.
The K3 HE's north-facing LEDs can allow Cherry-profile keycaps to hit the switch housing. The K2 Ultra has south-facing LEDs, and its compatibility notes warn that some sculpted keycaps can clip the LED.
The K2 Ultra lists both QMK and VIA support, while the K3 HE lists QMK support. Both vendor descriptions also mention the Keychron Launcher web app for key remapping and macros.
The K2 Ultra is the more flexible choice for mechanical switch swaps, with Red, Brown, and Banana switch options listed and hot-swap support. The K3 HE's hot-swap compatibility is limited to Keychron Ultra-Fast Lime low-profile magnetic switches.
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