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Compare Keychron C3 Pro vs Lemokey X4 Differences Side by Side

This comparison is for buyers deciding between two wired, QMK-compatible Keychron keyboards at a similar price point. The choice is difficult because both offer gasket mounts, hot-swap sockets, and extensive programmability. The decision hinges on whether you prioritize the C3 Pro's ultra-high polling rate and TKL layout or the X4's space-saving 75% form factor and dedicated knob.

89
Keychron C3 Pro 8K QMK Wired Custom Mechanical Keyboard
85
Lemokey X4 QMK Wired Mechanical Keyboard

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4.5 (2)
0.0 (0)
  • Released in 2023
  • Available in a 80% layout
  • Supports VIA configuration
  • Runs at a 8000 Hz polling rate
  • Weighs about 912 g
  • Sized at 21 x 365 x 138 mm
  • Features PBT, ABS keycaps
  • Offers Yes, Rgb, North-face, Rgb North-face RGB lighting
  • Released in 2024
  • Available in a 75% layout
  • Comes with a knob
  • Includes screw-in stabilizers
  • Runs at a 1000 Hz polling rate
  • Weighs about 712 g
  • Sized at 41 x 325 x 145 mm
  • Features ABS, PBT keycaps
  • Offers Yes, South-face, North-face RGB lighting
Scores
  • Performance: 89.8
  • Build Quality: 80.5
  • Productivity: 90.7
  • Customizability: 88.8
  • Portability: 57.8
Scores
  • Performance: 75.2
  • Build Quality: 81.5
  • Productivity: 95.2
  • Customizability: 83.2
  • Portability: 67
Name
Keychron C3 Pro
Name
Keychron Lemokey X4
Release year
2023
Release year
2024
Switch Options
Linear, Tactile, Clicky
Switch Options
Linear, Tactile, Clicky
Profile
Normal Profile
Profile
Normal Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
80%
Layout Size
75%
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
8000 Hz;1000 Hz
Polling Rate
1000 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
 
South-face, North-face
Case Colors
Case Colors
Case Material
ABS, Plastic
Case Material
ABS, Plastic
Keycaps Material
PBT, ABS
Keycaps Material
ABS, PBT
Dimensions
21 x 365 x 138 mm
Dimensions
41 x 325 x 145 mm
Weight
912g
Weight
712g
*Something incorrect or missing? Please
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Pros and Trade-offs

Your primary need dictates the choice. If competitive gaming latency is your top concern, the Keychron C3 Pro's 8000 Hz polling rate is the decisive feature. If you value desk space, a dedicated control knob, and a lighter build, the Keychron X4's compact 75% layout is the more practical option. Both are excellent values with strong customization foundations.

Keychron C3 Pro

  • +Configurable 8000 Hz polling rate for reduced input latency.
  • +Includes multiple internal sound-dampening foams (EVA, IXPE film, EPDM, silicone).
  • +TKL layout retains arrow and navigation keys in a smaller form factor.
  • +North-facing RGB LEDs for shine-through keycap legends.
  • +Officially supports both QMK and VIA firmware.
  • −Larger and heavier (912g) than the X4.
  • −Does not include a programmable knob.
  • −Uses a steel plate, which may produce a firmer typing feel compared to polycarbonate.

Keychron Lemokey X4

  • +More compact 75% layout saves desk space.
  • +Includes a programmable aluminum knob for media control.
  • +Lighter weight (712g) and shorter length.
  • +Features a polycarbonate plate, which can affect sound and flex.
  • +Offers a choice between ABS and PBT keycap versions.
  • −Fixed 1000 Hz polling rate, lacking the high-speed option of the C3 Pro.
  • −The vendor description mentions south-facing LEDs on the PBT keycap version, which can cause interference with certain Cherry-profile keycaps.
  • −No user reviews are available to corroborate real-world experience.

Which Keyboard Is Better for Your Needs?

The C3 Pro is the clear choice for gaming due to its high polling rate, while the X4 wins for office use and travel with its smaller footprint and included knob. For programming, both are equally capable due to their QMK support. Modders may lean towards the C3 Pro for its documented internal foams, and content creators might prefer the X4 for its programmable knob and space-saving design.

GamingKeychron C3 Pro
  • •The C3 Pro offers a configurable 8000 Hz polling rate, which the manufacturer states minimizes input lag for competitive gaming.
  • •Its TKL (80%) layout retains dedicated arrow and navigation keys without being full-sized.
  • •It includes north-facing RGB LEDs for shine-through keycap illumination.
OfficeKeychron Lemokey X4
  • •The X4's 75% layout is more compact, saving desk space while keeping most function keys.
  • •It includes a programmable aluminum knob for quick volume or media control.
  • •It offers a 10-degree maximum typing angle for ergonomic adjustment.
ProgrammingTie
  • •Both keyboards support QMK and VIA/Launcher for deep key remapping and macro creation.
  • •Both have N-key rollover for accurate simultaneous keypress registration.
  • •The C3 Pro has a TKL layout with dedicated navigation keys, while the X4's 75% layout keeps the keyboard closer to the mouse.
TravelKeychron Lemokey X4
  • •The X4 is more compact, measuring 325mm in length compared to the C3 Pro's 365mm.
  • •The X4 is lighter at 712g versus the C3 Pro's 912g.
  • •Both are wired-only, so portability is based solely on size and weight.
ModdingKeychron C3 Pro
  • •The C3 Pro's vendor description details multiple internal foam layers (EVA, IXPE film, EPDM, silicone) for sound tuning.
  • •It offers a configurable polling rate up to 8000 Hz via software.
  • •Both boards are hot-swappable and gasket-mounted, but the C3 Pro's sound-dampening construction is explicitly outlined.
Content CreationKeychron Lemokey X4
  • •The X4 includes a dedicated, programmable knob ideal for timeline scrubbing or parameter adjustment.
  • •Its more compact 75% layout frees up desk space for graphics tablets or other peripherals.
  • •The polycarbonate plate may offer a different acoustic signature preferred by some users.

Frequently Asked Questions (FAQ)

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