Keychron J5 QMK vs V6 Ultra
Choose the V6 Ultra for its 8000 Hz polling rate and added knob, or the J5 QMK if QMK firmware is the priority.
Which one should you get?
Get the
Keychron J5 QMK
- QMK firmware support, with vendor-described key remapping, macros, and shortcuts.
- Supports Bluetooth, 2.4 GHz, and wired connections.
- Hot-swappable switches and N-key rollover.
- Its listed polling rate is 1000 Hz, below the V6 Ultra's 8000 Hz in wired and 2.4 GHz modes.
- It does not list a knob or multimedia keys.
- The listed 3750 mAh battery is smaller than the V6 Ultra's 4000 mAh battery.
Get the
Keychron V6 Ultra
Battery
- 8000 Hz polling in wired and 2.4 GHz modes, according to the vendor.
- Gasket mount and PC plate, with vendor-described acoustic foam layers.
- Includes a knob, multimedia keys, and screw-in stabilizers.
- Uses ZMK firmware rather than QMK.
- At 1130 g and 149 x 448 mm, it remains a large, full-size keyboard to carry.
- Its south-facing RGB is a different LED orientation from the J5 QMK's north-facing RGB.
Choose the Keychron V6 Ultra if you want 8000 Hz polling, a knob, screw-in stabilizers, and its longer listed battery life. Choose the Keychron J5 QMK if QMK firmware and its vendor-described Last Key Priority feature matter more to you. Both have full-size layouts, wireless options, PBT keycaps, and hot-swappable switches.
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 J5 QMK
Keychron V6 Ultra
Connection
Bluetooth, 2.4 GHz, Wired
Wired, Bluetooth, 2.4 GHz
Battery
3,750 mAh
4,000 mAh
Max polling rate
1,000 Hz
8,000 Hz
Case material
ABS
ABS, Aluminum, Metal, Plastic
Knob
No
Yes
- Keychron J5 QMK
- Keychron V6 Ultra
- Performance
- 7889
- Build quality
- 6177
- Productivity
- 8491
- Customizability
- 7579
- Portability
- 5756
- Layout size: 100%
- Hot-swappable
- Sound dampening
- Keycaps: PBT
What will you mostly use it for?
The V6 Ultra leads for gaming, office controls, modding features, and content creation, with its higher polling rate, knob, and gasket-mounted design. The J5 QMK is the more direct fit for buyers who specifically want QMK firmware. Travel is a close call: both are full-size and similarly heavy, with different dimensions and battery-life claims. Both provide wireless connectivity, hot-swap support, and RGB lighting.
Pick the Keychron V6 Ultra
- The V6 Ultra lists 8000 Hz polling in wired and 2.4 GHz modes, compared with 1000 Hz for the J5 QMK.
- The J5 QMK includes Last Key Priority for directional changes, but the V6 Ultra has the higher listed polling rate.
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Keychron J5 QMK
No owner reviews collected yet.
Keychron V6 Ultra
6 owner reviews
“This thing is great the backlight is exactly how I want it and I don't got to download an app to change the light the keys are really responsive”
Keychron J5 QMK vs V6 Ultra specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
14 of 26 specs differ
Keychron J5 QMK
Keychron V6 Ultra
Switch options
Hot-swappable
Mount style
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
N-key rollover
Mac & Windows
Released
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
Lowest price across stores, Amazon excluded.
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.
Keychron J5 QMK vs V6 Ultra: your questions
The V6 Ultra lists 8000 Hz polling in wired and 2.4 GHz modes and adds a knob and multimedia keys. The J5 QMK supports QMK firmware and lists a 1000 Hz polling rate.
The Keychron V6 Ultra lists 8000 Hz polling in wired and 2.4 GHz modes. The J5 QMK lists 1000 Hz for wired and 2.4 GHz modes.
Yes, the J5 QMK supports QMK firmware. Keychron describes using it for key remapping, macros, and shortcuts, with configuration also available through Keychron Launcher.
Yes, the V6 Ultra listing identifies the assembled version as having a knob, and its metadata includes knob support. The J5 QMK does not list a knob.
Both keyboards are listed as hot-swappable. Their vendors describe support for 3-pin and 5-pin MX-style mechanical switches, allowing switch changes without soldering.
The V6 Ultra vendor lists up to 660 hours with the backlight off and up to 200 hours with RGB at its lowest brightness. The J5 vendor lists about 300 hours with backlighting off and about 172 hours with RGB at its lowest brightness.
Yes, both list Bluetooth, 2.4 GHz, and wired connectivity. Their vendors identify Bluetooth 5.2 for the J5 QMK and Bluetooth 5.3 for the V6 Ultra.
The V6 Ultra adds a knob and multimedia keys, which may suit buyers looking for extra onboard controls. Both are full-size keyboards with wireless connectivity and PBT keycaps.
The V6 Ultra has a gasket mount and PC plate, with its vendor describing acoustic foam layers including EPDM foam and bottom-case acoustic foam. The J5 QMK vendor describes IXPE, PET, and EPDM acoustic foam layers.
Yes, both have RGB lighting. The J5 QMK is listed with north-facing RGB, while the V6 Ultra is listed with south-facing RGB.
The J5 QMK may suit someone specifically seeking QMK firmware, which its vendor describes as supporting remapping, macros, and shortcuts. The V6 Ultra uses ZMK and supports key remapping and macros through Keychron Launcher.
Yes, both are listed as 100% full-size keyboards. The J5 QMK uses an ANSI layout, while the V6 Ultra listing includes ANSI and several ISO variants.
Not sold on either?
Still torn?
Answer a few quick questions and the keyboard finder ranks 2,000+ boards by how you will actually use yours.