KeebFinder
Not sure which keyboard to choose? Try the Keyboard Finder now!

Compare Epomaker Luma40 vs Keychron K3 Max Differences Side by Side

This comparison is for users deciding between two highly customizable, low-profile wireless keyboards. The choice is difficult because both support QMK/VIA, hot-swapping, and tri-mode connectivity. The core trade-off is the Luma40's radical 40% ortholinear layout against the K3 Max's more conventional 75% form factor. Your decision hinges on how much you value desk space and a unique typing feel versus immediate key accessibility.

87
EPOMAKER LUMA40
94
Keychron K3 Max QMK/VIA Wireless Custom Mechanical Keyboard ISO Layout Collection

Select a keyboard to compare

5.0 (3)
4.7 (9)
  • Released in 2025
  • Has Clicky, Linear switch options
  • Available in a 40% layout
  • Built with the ANSI layout standard
  • Offers Ortholinear ergonomics
  • Uses a Tray Mount mounting style
  • Equipped with a 1450 mAh battery
  • Weighs about 410 g
  • Sized at 21 x 240 x 87 mm
  • Made with a Aluminum case
  • Features PC keycaps
  • Offers Yes, Rgb, North-face, Rgb North-face RGB lighting
  • Released in 2023
  • Has Tactile, Linear, Clicky switch options
  • Available in a 75% layout
  • Built with the ISO, ISO-UK, ISO-DE, ISO-Nordic, ISO-SW, ANSI layout standard
  • Offers Normal ergonomics
  • Provides dedicated media keys
  • Includes screw-in stabilizers
  • Uses a Plate Mount mounting style
  • Equipped with a 1550 mAh battery
  • Weighs about 580 g
  • Sized at 22 x 306 x 116 mm
  • Made with a ABS, Aluminum, Wood, Plastic case
  • Features PBT, ABS keycaps
  • Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting
Scores
  • Performance: 74
  • Build Quality: 81.3
  • Productivity: 88.6
  • Customizability: 86.1
  • Portability: 85.3
Scores
  • Performance: 80.9
  • Build Quality: 86.4
  • Productivity: 94.3
  • Customizability: 92.2
  • Portability: 77.2
Name
Epomaker Luma40
Name
Keychron K3 Max
Release year
2025
Release year
2023
Switch Options
Clicky, Linear
Switch Options
Tactile, Linear, Clicky
Profile
Low Profile
Profile
Low Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
40%
Layout Size
75%
Layout Standard
ANSI
Layout Standard
ISO, ISO-UK, ISO-DE, ISO-Nordic, ISO-SW, ANSI
Layout Ergonomics
Ortholinear
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
Bluetooth, 2.4 GHz, Wired, Wireless
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate
1000 Hz
Polling Rate
1000 Hz
Battery capacity
1450 mAh
Battery capacity
1550 mAh
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
Tray Mount
Mount Style
Plate Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, North-face
Backlight
 
Rgb, White, North-face
Case Colors
Case Colors
Case Material
Aluminum
Case Material
ABS, Aluminum, Wood, Plastic
Keycaps Material
PC
Keycaps Material
PBT, ABS
Dimensions
21 x 240 x 87 mm
Dimensions
22 x 306 x 116 mm
Weight
410g
Weight
580g
*Something incorrect or missing? Please
let me know
!

Pros and Trade-offs

Your primary layout preference should guide this decision. If you want the smallest possible footprint and are curious about or already prefer ortholinear typing, the Epomaker Luma40 is a compelling, well-built option. If you need a more traditional keyboard with dedicated keys for navigation and media control without sacrificing wireless performance or customizability, the Keychron K3 Max is the more practical and versatile daily driver.

Epomaker Luma40

  • +Extremely compact 40% ortholinear layout saves significant desk space.
  • +Full CNC aluminum case construction for a premium feel.
  • +Includes a detachable wrist strap and tools in the box for portability.
  • +Flat typing angle and low-profile design promote a low wrist position.
  • +Vendor-provided latency specs: 3ms (wired), 5ms (2.4GHz), 15ms (Bluetooth).
  • −40% layout requires heavy reliance on key layers for numbers, arrows, and most symbols.
  • −Uses proprietary Kailh low-profile switches, limiting hot-swap options.
  • −No adjustable typing angle; it is completely flat.
  • −Lacks dedicated arrow keys and navigation cluster.

Keychron K3 Max

  • +75% layout retains arrow keys, function row, and navigation cluster for immediate access.
  • +Offers adjustable typing angles (3° and 7°) for ergonomic support.
  • +Includes double-shot PBT keycaps for better durability and feel.
  • +Features redesigned screw-in stabilizers for larger keys.
  • +Vendor states it uses IXPE and latex foam for sound dampening and switch support.
  • −Larger and heavier than the Luma40, making it less portable.
  • −Hot-swap compatibility is limited to Gateron and Keychron low-profile mechanical switches.
  • −Case uses an ABS and aluminum frame combo, not full aluminum.
  • −No built-in storage for the 2.4GHz wireless dongle.

Which Keyboard Is Better for Your Needs?

The Keychron K3 Max is the more versatile choice for general productivity, gaming, and office use due to its familiar layout and dedicated keys. The Epomaker Luma40 wins decisively for travel and portability with its tiny footprint. For programming and modding, it's a tie; the decision rests on whether you prefer the Luma40's ortholinear experiment or the K3 Max's traditional key arrangement for your customizations.

GamingKeychron K3 Max
  • •The K3 Max has a 1000Hz polling rate in its 2.4GHz and wired modes for low latency.
  • •Its 75% layout includes arrow keys and some function keys useful for game shortcuts without layers.
  • •The manufacturer states it includes redesigned screw-in stabilizers for larger keys like spacebar.
OfficeKeychron K3 Max
  • •The K3 Max includes 12 multimedia keys and a full set of navigation keys, reducing reliance on key layers.
  • •It offers adjustable typing angles (3° and 7°) for ergonomic wrist support.
  • •It includes keycaps for both Windows and macOS, easing cross-platform office use.
ProgrammingTie
  • •Both keyboards support QMK and VIA for extensive key remapping and macro creation.
  • •The Luma40's ortholinear layout may reduce finger strain during long coding sessions, according to its vendor description.
  • •The K3 Max's 75% layout provides direct access to symbols and brackets, while the Luma40 requires layers.
TravelEpomaker Luma40
  • •The Luma40 is significantly smaller (240mm wide) and lighter (410g) than the K3 Max (306mm wide, 580g).
  • •Its 40% layout takes up minimal space in a bag or on a small desk.
  • •The vendor includes a detachable wrist strap with tools, suggesting a focus on portability.
ModdingTie
  • •Both are hot-swappable and support QMK/VIA firmware for deep customization.
  • •The Luma40 uses a tray mount with switch pad and bottom sponge foam, while the K3 Max uses plate mount with IXPE and latex foam.
  • •The K3 Max's vendor notes compatibility with Gateron and Keychron low-profile mechanical switches, while the Luma40 is listed as compatible with Kailh low-profile switches.
Content CreationKeychron K3 Max
  • •The K3 Max's dedicated multimedia keys provide quick access to volume and playback controls.
  • •Its 75% layout allows for easier use of software-specific shortcuts that often use the F-row.
  • •The adjustable typing angle can improve comfort during long editing sessions.

Frequently Asked Questions (FAQ)

Discover similar products

You might also like similar products in that price range:

-30% off
82
$129$90
EPOMAKER Carbon60
Epomaker Carbon60
60%,
Hotswap,
Wireless,
Wired,
RGB,
VIA,
QMK

83
$94
Keychron K3 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 3
Keychron K3 V3
75%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Alu case,
Top Mount

87
$83
Keychron K3 Pro QMK/VIA Wireless Mechanical Keyboard ISO Layout Collection
Keychron K3 Pro
75%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Alu case,
Tray Mount

88
$85
Keychron K17 Max QMK Wireless Custom Mechanical Keyboard ISO Layout Collection
Keychron K17 Max
96%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
Knob,
VIA,
QMK,
Alu case,
PCB Mount

68
$96
Keychron K3 Ultra-slim Wireless Mechanical Keyboard (Version 2)
Keychron K3 V2
75%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
Alu case,
Tray Mount

84
$94
Keychron K1 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 6
Keychron K1 V6
80%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Alu case,
Top Mount

85
$110
Nuphy Air60V2 Low Profile Mechanical Keyboard Kit
Nuphy Air60 V2
60%,
Hotswap,
Wireless,
Wired,
RGB,
VIA,
QMK,
Alu case

84
$83
Keychron K7 Pro QMK/VIA Wireless Custom Mechanical Keyboard ISO Layout Collection
Keychron K7 Pro
65%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Alu case,
Tray Mount

86
$94
Keychron K5 Max QMK Wireless Custom Mechanical Keyboard ISO Layout Collection
Keychron K5 Max
100%,
Hotswap,
Wireless,
Wired,
RGB/ White LEDs,
VIA,
QMK,
Alu case,
PCB Mount

77
$90
Keychron K3 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 3
Keychron K3 QMK V3
75%,
Hotswap,
Wireless,
Wired,
RGB,
QMK,
HE,
Alu case,
Plate Mount