Keychron C3 HE vs C4 HEPolling Rate or Layout Focus?
Choose the Keychron C4 HE if you want the fastest possible polling rate for competitive gaming, or pick the C3 HE for a more compact 80 percent layout.
Which one should you get?
Get the
Keychron C3 HE
Rapid trigger
- More compact 80 percent layout saves desk space compared to full-size boards.
- Lighter and narrower design makes it easier to transport or store.
- Includes sidelight bars on both sides that sync with RGB backlight settings.
- Limited to a 1000 Hz polling rate, which is lower than the C4 HE's 8000 Hz.
- No dedicated number pad, which may slow down data entry workflows.
Get the
Keychron C4 HE
polling rate
- 8000 Hz polling rate provides the lowest input lag for competitive gaming.
- Full-size layout with a number pad is ideal for data entry and sim games.
- Compatible with QMK and VIA for deep customization of keys and macros.
- Full-size layout is wider and heavier at 970g, reducing portability.
- Lacks the sidelight bars that are present on the C3 HE.
- Does not mention support for Dynamic Rapid Trigger or Snap Click features.
If competitive gaming with the lowest possible input lag is your priority, the Keychron C4 HE with its 8000 Hz polling rate is the clear choice. If you prefer a more compact keyboard that saves desk space and is easier to carry, the Keychron C3 HE offers the same magnetic switch technology in a smaller footprint. Both keyboards deliver Hall effect performance, adjustable actuation, and full QMK/VIA support, so your decision should be based on layout size and polling rate needs.
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 C3 HE
Keychron C4 HE
Rapid trigger
Yes
No
Max polling rate
1,000 Hz
8,000 Hz
Dimensions
30 x 365 x 138 mm
30 x 446 x 138 mm
- Keychron C3 HE
- Keychron C4 HE
- Performance
- 8889
- Build quality
- 8383
- Productivity
- 9595
- Customizability
- 9292
- Portability
- 4545
- Layout size: 100%
- Hall effect (magnetic)
- Connection: Wired
- Hot-swappable
- Case material: Plastic
- Switch options: Clicky, Linear, Tactile
What will you mostly use it for?
The Keychron C4 HE wins for gaming thanks to its 8000 Hz polling rate, while the C3 HE is the better travel companion due to its smaller footprint. For office, programming, modding, and content creation, the two keyboards are effectively tied because they share the same core components: Hall effect switches, gasket mount, PBT keycaps, and QMK/VIA support. In these categories, personal preference for layout size and the need for a number pad will be the deciding factor.
Pick the Keychron C4 HE
- Features an 8000 Hz polling rate for lower input lag compared to 1000 Hz.
- Full-size layout provides a dedicated number pad for MMO or sim gaming.
Keychron C3 HE vs C4 HE specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
3 of 26 specs differ
Keychron C3 HE
Keychron C4 HE
Switch options
Hall effect (magnetic)
Rapid trigger
Hot-swappable
Mount style
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Display
Media keys
Connection
Max polling rate
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Typing angle
Backlight
QMK
VIA
Mac & Windows
Released
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Keychron C3 HE vs C4 HE: your questions
The primary difference is layout size and polling rate. The C3 HE is an 80 percent (tenkeyless) wired keyboard with a 1000 Hz polling rate. The C4 HE is a full-size wired keyboard with an 8000 Hz polling rate, which provides lower input lag.
The C4 HE is better for gaming due to its 8000 Hz polling rate, which reduces input lag compared to the 1000 Hz rate of the C3 HE. Both keyboards use the same Hall effect magnetic switches and adjustable actuation, but the C4 HE has an edge in raw responsiveness.
Yes, both the C3 HE and C4 HE come with pre-lubed Keychron Ultra-fast Lime Magnetic Switches. These are Hall effect switches made from POM material and feature adjustable actuation points from 0.1 to 3.35 mm.
Yes, both keyboards support QMK firmware and are configurable through the Keychron Launcher web app. This allows you to remap keys, create macros, adjust lighting, and fine-tune advanced settings like actuation and polling rate.
The C3 HE is more portable because it has a compact 80 percent layout and is lighter than the C4 HE. The C4 HE is wider and weighs 970g, making it less suited for frequent travel.
Yes, both the C3 HE and C4 HE are hot-swappable. They are compatible with most 3-pin and 5-pin MX style mechanical switches on the market, though the default switches are Keychron magnetic switches.
Both keyboards come with Cherry profile double-shot PBT keycaps. These keycaps are designed for durability, long-lasting legends, and a quieter typing sound.
Yes, both feature north-facing RGB LEDs with over 22 backlight modes. You can adjust hue, saturation, brightness, and effect speed through the Keychron Launcher web app.
Yes, both the C3 HE and C4 HE include Mac and Windows keycaps in the box and are compatible with macOS, Windows, and Linux systems.
Both keyboards use screw-in PCB stabilizers. These are designed to reduce wobbliness on larger keys like the space bar, shift, enter, and delete.
The Keychron C3 HE has a 1000 Hz polling rate. This is the default and only polling rate option, as it does not feature the 8000 Hz capability of the C4 HE.
Yes, the C4 HE supports adjustable actuation, Dynamic Keystrokes (DKS), and analog mode. However, the vendor description for the C4 HE does not mention Dynamic Rapid Trigger or Snap Click, which are listed for the C3 HE.
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