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Compare Keychron C3 HE vs C4 HE Differences Side by Side

This comparison is for buyers deciding between two wired Hall effect keyboards from Keychron: the C3 HE and the C4 HE. The decision is difficult because both share the same magnetic switch technology, gasket mount design, and keycaps, yet they differ in layout size and polling rate. The C3 HE uses a more compact 80 percent layout with a 1000 Hz polling rate, while the C4 HE is a full-size board with an 8000 Hz polling rate. Your choice ultimately hinges on whether you prioritize desk space or the absolute lowest input lag.

90
Keychron C3 HE Wired Magnetic Switch Keyboard
90
Keychron C4 HE 8K Magnetic Switch Keyboard

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  • Enables rapid trigger functionality
  • Runs at a 1000 Hz polling rate
  • Sized at 30 x 365 x 138 mm
  • Runs at a 8000 Hz polling rate
  • Weighs about 970 g
  • Sized at 30 x 446 x 138 mm
Scores
  • Performance: 88.4
  • Build Quality: 82.9
  • Productivity: 95
  • Customizability: 92.7
  • Portability: 45.3
Scores
  • Performance: 89.2
  • Build Quality: 82.8
  • Productivity: 94.9
  • Customizability: 92.5
  • Portability: 45.1
Name
Keychron C3 HE
Name
Keychron C4 HE
Release year
2026
Release year
2026
Switch Options
Linear, Tactile, Clicky
Switch Options
Linear, Tactile, Clicky
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
100%
Layout Size
100%
Layout Standard
ANSI
Layout Standard
ANSI
Layout Ergonomics
Normal
Layout Ergonomics
Normal
Knob Support
 
Knob Support
 
Display Support
 
Display Support
 
Mac/Win Support
 
Mac/Win Support
 
Multi-Media Keys
 
Multi-Media Keys
 
USB-C
 
USB-C
 
USB passthrough
 
USB passthrough
 
Connection
Wired, Wired only
Connection
Wired, Wired only
Polling Rate
1000 Hz
Polling Rate
8000 Hz
Battery capacity
-
Battery capacity
-
Hall Effect Support
 
Hall Effect Support
 
QMK Support
 
QMK Support
 
VIA Support
 
VIA Support
 
VIAL Support
 
VIAL Support
 
N-Key Rollover
 
N-Key Rollover
 
Rapid Trigger
 
Rapid Trigger
 
Mount Style
Gasket Mount
Mount Style
Gasket Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, North-face
Backlight
 
Rgb, North-face
Case Colors
Case Colors
Case Material
Plastic
Case Material
Plastic
Keycaps Material
PBT
Keycaps Material
PBT
Dimensions
30 x 365 x 138 mm
Dimensions
30 x 446 x 138 mm
Weight
-
Weight
970g
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Pros and Trade-offs

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.

Keychron C3 HE

  • +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.
  • +Offers adjustable actuation from 0.1 to 3.35 mm with 0.01 mm sensitivity.
  • +Supports Dynamic Rapid Trigger, Snap Click, and Last Key Priority features.
  • −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.

Keychron C4 HE

  • +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.
  • +Uses pre-lubed Keychron Ultra-fast Lime Magnetic switches for a responsive feel.
  • −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.

Which Keyboard Is Better for Your Needs?

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.

GamingKeychron 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.
OfficeTie
  • •Both use Cherry profile double-shot PBT keycaps for comfortable typing.
  • •Both feature gasket mount and sound dampening foams for a quieter experience.
  • •Full-size layout of C4 HE may be preferred by data entry users, but C3 HE saves desk space.
  • •Both support QMK and VIA for custom macros and shortcuts.
ProgrammingTie
  • •Both offer QMK and VIA support for full key remapping and custom layers.
  • •Both feature Hall effect switches with adjustable actuation from 0.1 to 3.35 mm.
  • •Layout choice depends on whether a programmer prefers a number pad or a compact board.
TravelKeychron C3 HE
  • •C3 HE has a more compact 80 percent layout, making it easier to fit in a bag.
  • •C4 HE is heavier at 970g and wider, less suited for frequent transport.
ModdingTie
  • •Both are hot-swappable and accept 3-pin and 5-pin MX style mechanical switches.
  • •Both use screw-in PCB stabilizers and a steel plate, offering a solid modding base.
  • •Both are compatible with QMK firmware and the Keychron Launcher for software customization.
Content CreationTie
  • •Both include multi-media keys and support for custom macros via QMK/VIA.
  • •Both use the same Hall effect switch and PBT keycaps, offering a consistent typing feel.
  • •Full-size C4 HE may be preferred for number-heavy workflows like video encoding.

Frequently Asked Questions (FAQ)

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