Keychron K3 Max vs V3 UltraLow-Profile vs 8K TKL
Choose the K3 Max for ultra-portability and low-profile typing, or the V3 Ultra for class-leading 8K wireless performance and a deeper typing feel.
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4.1 (16)4.1 · 16 reviews
from$89at MK
5.0 (2)5.0 · 2 reviews
from$114at MK
Which one should you get?
Get the
Keychron K3 Max
Low-Profile
Build quality in the top 5% of 75% boards under $100.
- Ultra-slim low-profile design with aluminum top case for portability.
- Bluetooth 5.1 connects to three devices for easy workflow switching.
- Hot-swappable low-profile Gateron switches enable easy typing feel customization.
- 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.
- No numpad.
Get the
Keychron V3 Ultra
8K TKL
Build quality in the top 10% of 80% boards under $150.
- Industry-leading 8000 Hz polling in wireless and wired modes for minimal input lag.
- Gasket mount design with PC plate delivers softer, quieter keystrokes.
- Massive 4000 mAh battery offers up to 660 hours on a single charge (backlight off).
- 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.
- No numpad.
If portability and a sleek low-profile typing feel are your top priorities, the Keychron K3 Max is the obvious choice for travel and office use. If you demand the lowest possible wireless latency, a gasket mount, and a battery that lasts months, the Keychron V3 Ultra delivers performance that few wireless TKL boards can match. Your decision comes down to form factor versus raw performance.
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
Keychron V3 Ultra
Layout size
75%
80%
Connection
Bluetooth, 2.4 GHz, Wired
Wired, Bluetooth, 2.4 GHz
Wireless for several devices and wired for lower latency
Battery
1,550 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
- Keychron K3 Max
- Keychron V3 Ultra
- Performance
- 8191
- Build quality
- 8683
- Productivity
- 9498
- Customizability
- 9194
- Portability
- 7776
- Hot-swappable
- Switch options: Clicky, Linear, Tactile
- QMK
- VIA
- Sound dampening
What will you mostly use it for?
For gaming and modding, the V3 Ultra's 8K polling, gasket mount, and standard MX switch compatibility give it a clear edge. The K3 Max wins for travel and office use due to its ultralight low-profile build and seamless multi-device Bluetooth pairing. Both keyboards tie for programming thanks to equally capable firmware support. Content creators benefit more from the V3 Ultra's knob and marathon battery life.
Pick the Keychron V3 Ultra
- 8000 Hz polling rate in wired and 2.4 GHz wireless modes versus 1000 Hz on the K3 Max.
- Gasket mount design reduces resonance for a quieter gaming experience.
- Pre-lubed Keychron Silk POM switches provide smooth, responsive keystrokes.
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Keychron K3 Max
16 owner reviews
“Noce keyboard, i appreciate the level of customization QMK provides. One thing was little disappointing - the tactile feeling comparing to K3. Other than that its very good kb!”
“I sold my k3 pro and got this. The one I got drops connection intermittently or doesn't type or respond right away. It sounds nice, but stiff reds are not as pleasant to type on as previous keyboards reds. I really thought I ordered hotswap RGB max but seems…”
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 K3 Max vs V3 Ultra specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
16 of 28 specs differ
Keychron K3 Max
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 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
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 K3 Max vs V3 Ultra: your questions
The Keychron V3 Ultra supports an 8000 Hz polling rate in both wired and 2.4 GHz wireless modes. The K3 Max offers a 1000 Hz polling rate in wired and 2.4 GHz modes, and 90 Hz over Bluetooth.
Yes, both keyboards are programmable via the Keychron Launcher web app, which works in Chrome, Opera, or Edge browsers with the keyboard connected via USB cable. The K3 Max uses QMK firmware while the V3 Ultra uses ZMK, but the web interface is similar.
The K3 Max is significantly more portable at 580 grams and just 22 mm thick, with an ultra-slim low-profile design. The V3 Ultra is heavier at 960 grams and thicker at 33 mm front height. The K3 Max also has Bluetooth 5.1 for wireless connection to multiple devices.
Yes, both come in hot-swappable versions. The K3 Max is compatible only with Gateron or Keychron low-profile mechanical switches, while the V3 Ultra works with almost all standard 3-pin and 5-pin MX mechanical switches.
The V3 Ultra offers up to 660 hours with backlight off (200 hours at lowest RGB brightness), driven by a 4000 mAh battery. The K3 Max's battery life in hours is not specified in the product description, but its 1550 mAh battery is smaller.
Yes, both keyboards include keycaps and system toggle for macOS and Windows. The K3 Max specifically includes a Mac layout and multimedia keys designed for Apple users, while the V3 Ultra supports both systems with a toggle switch.
Both the K3 Max and V3 Ultra use screw-in PCB stabilizers for improved stability and reduced wobble on larger keys like space bar, shift, and enter. Some keys on the K3 Max have proprietary stabilizers according to user reviews.
The V3 Ultra offers more modding flexibility with its gasket mount design, multiple foam layers (Sound Absorbing Foam, PET Film, EPDM Foam), and compatibility with almost any MX switch. The K3 Max's low-profile switch and stabilizer limitations make it less moddable.
No, the V3 Ultra features a rotary knob for volume or shortcut control. The K3 Max does not include a knob but offers 12 multimedia keys on its 75% layout.
The K3 Max comes with low-profile double-shot PBT keycaps with excellent oil resistance. The V3 Ultra uses OSA profile double-shot PBT keycaps that offer a taller OEM-like height with an SA-like spherical shape. Both materials prevent legends from fading.
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