Keychron K3 V3 vs K3 Ultra
Choose the V3 for acoustic foam layering and case options, or the Ultra for 8K polling and a wood-accented frame.
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Which one should you get?
Get the
Keychron K3 V3
Build quality in the top 10% of 75% boards under $100.
- Multi-layer acoustic foam (IXPE, EPDM, latex) for quieter typing.
- Available in ABS+Aluminum frame for a sturdier desk feel.
- Supports more ISO layout options: UK, German, Swiss, and Nordic.
- 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
Keychron K3 Ultra
Battery
Build quality in the top 30% of 75% boards under $150.
- 8000 Hz polling rate in both 2.4 GHz and wired modes.
- Natural wood and metal frame offers a premium aesthetic.
- 2600 mAh battery with up to 550 hours of usage (backlight off).
- 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-DE, ISO-UK, ISO-Nordic. The other board is sold in those layouts.
For competitive gaming and content creation, the K3 Ultra’s 8K polling and 2.4 GHz connection give it a clear edge in responsiveness. For office or travel use, the K3 V3’s lighter weight, foam-dampened typing, and aluminum frame option make it a more practical daily driver. If you need the lowest latency, go with the Ultra; if you prefer acoustic refinement and portability, the V3 is the better fit.
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 V3
Keychron K3 Ultra
Connection
Bluetooth, Wired
Bluetooth, 2.4 GHz, Wired
Wireless for several devices and wired for lower latency
Battery
1,550 mAh
2,600 mAh
A larger battery means fewer cables during the day
Max polling rate
1,000 Hz
8,000 Hz
Higher polling helps competitive FPS and does nothing for typing
Case material
ABS, Aluminum
ABS, Wood
Mount style
PCB Mount, Plate Mount, Top Mount
Plate Mount
- Keychron K3 V3
- Keychron K3 Ultra
- Performance
- 8286
- Build quality
- 8375
- Productivity
- 8089
- Customizability
- 8986
- Portability
- 7782
- Layout size: 75%
- Hot-swappable
- Low profile
- Switch options: Clicky, Linear, Tactile
- QMK
- VIA
What will you mostly use it for?
In gaming and content creation, the K3 Ultra leads with its 8K polling and 2.4 GHz wireless. For office quiet, the V3’s multi-layered foam and aluminim option offer advantages. Programming and modding are ties because both rely on the same switch types, hot-swap capability, and open-source firmware. The V3 wins on portability by being lighter and smaller. Overall, the Ultra appeals to users needing raw responsiveness, while the V3 suits those who value sound dampening and build variety.
Pick the Keychron K3 Ultra
- Offers 8000 Hz polling rate in 2.4 GHz and wired modes for lower latency.
- 1 MB flash memory supports high-speed firmware, enhancing competitive use.
- Includes 2.4 GHz connectivity for a stable, low-latency wireless link.
Keychron K3 V3 vs K3 Ultra specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
11 of 26 specs differ
Keychron K3 V3
Keychron K3 Ultra
Switch options
Hot-swappable
Mount style
Low profile
Sound dampening
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 V3
Keychron
ISO-DE, ISO-UK, ISO-Nordic, ISO-SW
In stockShips to you
Keychron (DE)
ISO-DE, ISO-UK, ISO-SW
In stockDoes not ship to you
Keychron K3 Ultra
Keychron
ISO
In stockShips to you
Keychron (DE)
ISO
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 K3 V3 vs K3 Ultra: your questions
The K3 Ultra supports 8000 Hz in both wired and 2.4 GHz modes, while the K3 V3 offers 1000 Hz on wired and 90 Hz on Bluetooth. This makes the Ultra significantly faster for gaming and high-speed input.
Yes, both the K3 V3 and K3 Ultra are hot-swappable, allowing you to change Keychron Milk POM switches without soldering. Both are compatible with Keychron and Gateron low-profile mechanical switches, but not optical switches.
Yes, both keyboards support full key remapping and macros. The K3 V3 uses QMK firmware and the Keychron Launcher, while the K3 Ultra uses ZMK firmware, also accessible via Launcher. Both work on macOS, Windows, and Linux.
The K3 Ultra has a 2600 mAh battery rated for up to 550 hours with backlight off. The K3 V3 has a 1550 mAh battery. The Ultra offers substantially longer runtime if you use wireless mode frequently.
The K3 V3 uses LSA profile shine-through ABS keycaps, while the K3 Ultra uses LSA double-shot PBT keycaps that are not shine-through. PBT keycaps on the Ultra resist oil and fading better than ABS.
The V3 is more portable, weighing 540g and measuring 306 x 116 mm. The Ultra is slightly heavier at 566g and larger at 320.62 x 126 mm. Both are slim, but the V3 is easier to pack.
The K3 Ultra adds 2.4 GHz wireless connectivity alongside Bluetooth 5.2 and wired USB-C. The K3 V3 only provides Bluetooth and wired connections, lacking the low-latency 2.4 GHz option.
The K3 V3 is better for quiet typing because it has three acoustic foam layers: IXPE, EPDM, and latex foam. This dampens key noise and vibration more effectively than the Ultra's foams.
Yes, both keyboards come with keycaps for macOS and Windows, and the Launcher web app lets you configure different keymaps for each OS. Both are compatible with macOS, Windows, and Linux.
The K3 V3 offers ABS or ABS+Aluminum frame options, while the K3 Ultra uses ABS plastic for the bottom case with a natural wood and metal frame top. The Ultra uses a polymer frame for a unique look.
The K3 Ultra features per-key RGB and mix RGB modes with 22+ settings, and uses north-facing RGB LEDs. The K3 V3 offers 22+ RGB or 14 white backlight modes. However, the Ultra's PBT keycaps are not shine-through.
No, the K3 Ultra is only compatible with low-profile mechanical switches like the Keychron Milk POM or Gateron low-profile switches. Optical switches are not supported because ZMK firmware does not support them.
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