Keychron K1 V6 vs V3 UltraLow Profile or 8K?
Choose the K1 V6 for its slimmer, lighter design, or the V3 Ultra for 8K polling and broad MX-style switch compatibility.
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5.0 · 2 reviews
from$74at Keychron
5.0 · 2 reviews
from$114at MK
Which one should you get?
Get the
Keychron K1 V6
Build quality in the top 15% of 80% boards under $100.
- Low-profile 80% design, with a listed weight of 596 g.
- ABS and aluminum frame with an aluminum plate.
- QMK support, Keychron Launcher remapping, and hot-swappable options.
- 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-FR, ISO-ES, ISO-CH. The other board is sold in those layouts.
Get the
Keychron V3 Ultra
Battery
Build quality in the top 10% of 80% boards under $150.
- 8000 Hz polling in wired and 2.4 GHz modes, with Bluetooth also available.
- Hot-swappable support for almost all 3-pin and 5-pin MX-style mechanical switches.
- Gasket mount, polycarbonate plate, screw-in stabilizers, and acoustic foam components.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
- Missing ISO-Nordic, ISO-SW. The other board is sold in those layouts.
Choose the K1 V6 if a lighter, slimmer low-profile keyboard and its supported regional layouts match your needs. Choose the V3 Ultra if you want 8000 Hz polling over wired or 2.4 GHz, a knob, or broader MX-style switch swapping. Check the compatibility rules before buying replacement keycaps, especially if you plan to use shine-through or sculpted sets.
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 K1 V6
Keychron V3 Ultra
Connection
Bluetooth, Wired
Wired, Bluetooth, 2.4 GHz
Wireless for several devices and wired for lower latency
Battery
2,000 mAh
4,000 mAh
A larger battery means fewer cables during the day
Low profile
Yes
No
Max polling rate
1,000 Hz
8,000 Hz
Higher polling helps competitive FPS and does nothing for typing
Case material
ABS, Aluminum
ABS, Plastic
- Keychron K1 V6
- Keychron V3 Ultra
- Performance
- 8291
- Build quality
- 7983
- Productivity
- 8098
- Customizability
- 8894
- Portability
- 7376
- Layout size: 80%
- Hot-swappable
- Switch options: Clicky, Linear, Tactile
- QMK
- VIA
What will you mostly use it for?
The V3 Ultra leads for gaming, office work, programming, modding, and content creation, mainly through its higher polling rate, knob, and wider MX-style switch support. The K1 V6 is the more travel-oriented pick because it weighs less and has a narrower footprint. Both have wireless and wired connectivity, programmable controls, and hot-swappable versions, so regional layout and preferred typing profile remain important deciding factors.
Pick the Keychron V3 Ultra
- The V3 Ultra offers 8000 Hz polling in wired and 2.4 GHz modes; the K1 V6 is listed at 1000 Hz, with its vendor description specifying 125 Hz in Bluetooth mode.
- Both offer linear, tactile, and clicky switch options, plus N-key rollover in wired and wireless modes.
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Keychron K1 V6
2 owner reviews
“Love it! My first mechanical, now typing is a beautiful experience, I enjoy coming back to the keyboard! Remapped with Makros, so I have my apps at the fingertip. I am experiencing some minor bugs like "Enter"-key "stuck", meaning the keyboard typed enter…”
Keychron V3 Ultra
2 owner reviews
“Second Keyboard I buy from Keychron! I live in El Salvador and it arrived on time and perfectly. Extremely comfortable, outstanding switches. Best keyboard I've had in my life.”
Keychron K1 V6 vs V3 Ultra specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
17 of 28 specs differ
Keychron K1 V6
Keychron V3 Ultra
Switch options
Hot-swappable
Mount style
Low profile
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Knob
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 K1 V6
Keychron
ISO-DE, ISO-UK, ISO-Nordic, ISO-SW
In stockShips to you
Keychron (DE)
ISO-DE, ISO-UK, ISO-SW
Out of stockDoes not ship to you
Keychron V3 Ultra
Input Gear
ISO-DE
Out of stockShips to you
Keychron (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.
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 K1 V6 vs V3 Ultra: your questions
The K1 V6 is an 80% low-profile keyboard with a 596 g listed weight. The V3 Ultra is a conventional-profile 80% board with a knob, 2.4 GHz connectivity, and 8000 Hz polling in wired and 2.4 GHz modes.
The V3 Ultra has the higher listed polling rate, 8000 Hz in wired and 2.4 GHz modes. The K1 V6 is listed at 1000 Hz, and its vendor description specifies 125 Hz over Bluetooth.
No. The K1 V6 compatibility rules limit it to low-profile switches, and its vendor description also identifies low-profile mechanical switches as supported. The V3 Ultra supports almost all 3-pin and 5-pin MX-style mechanical switches.
The K1 V6 is the lighter and narrower option, at 596 g and 346 x 119 mm. The V3 Ultra weighs 960 g and measures 367.8 x 149 mm.
Yes. The K1 V6 supports Bluetooth and wired connections, while the V3 Ultra supports Bluetooth, 2.4 GHz, and wired connections.
The V3 Ultra is listed for up to 660 hours with its backlight off and has a 4000 mAh battery. The K1 V6 has a 2000 mAh battery, and its vendor description lists up to 160 hours.
Both have hot-swappable options. The K1 V6 is restricted to low-profile switches, while the V3 Ultra supports almost all 3-pin and 5-pin MX-style mechanical switches without soldering.
The K1 V6 has north-facing LEDs, and its compatibility rules warn that Cherry-profile keycaps can hit the switch housing. Its low-profile sockets also require low-profile keycaps rather than standard MX keycaps.
The V3 Ultra's compatibility rules say shine-through legends stay dark with its south-facing LEDs. They also warn that some sculpted keycaps can clip the LED.
The V3 Ultra includes a knob and lists a gasket mount, polycarbonate plate, screw-in stabilizers, and acoustic foam components. The K1 V6 does not list a knob, though its vendor description names IXPE, latex, and EPDM acoustic foam.
The K1 V6 is listed in ISO, ISO-UK, ISO-DE, ISO-SW, ISO-Nordic, and ANSI, but not ISO-FR, ISO-ES, or ISO-CH. The V3 Ultra lists ISO-ES, ISO-FR, ISO-DE, ISO-UK, ISO-CH, JIS, ISO, and ANSI, but not ISO-Nordic or ISO-SW.
Yes. Both vendor descriptions identify Keychron Launcher as a tool for key remapping and macros. The K1 V6 lists QMK support, while the V3 Ultra vendor description identifies ZMK firmware.
Not sold on either?
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