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Compare Keychron K3 Max vs Nuphy Air75 V3 Differences Side by Side

This comparison is for users deciding between two premium low-profile 75% wireless keyboards. The choice is difficult because both offer hot-swappable switches, multi-device connectivity, and compact form factors. The K3 Max emphasizes open-source firmware and extensive layout support, while the Air75 V3 focuses on long battery life, a unique gasket mount, and Mac-centric design. Your priority in firmware freedom versus endurance and acoustic tuning will determine the winner.

94
Keychron K3 Max QMK/VIA Wireless Custom Mechanical Keyboard ISO Layout Collection
-10% off
84
NuPhy Air75 V3

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4.7 (8)
4.9 (254)
  • Released in 2023
  • Built with the ISO, ISO-UK, ISO-DE, ISO-Nordic, ISO-SW, ANSI layout standard
  • Supports VIA configuration
  • 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
  • Released in 2025
  • Built with the ANSI, JIS, ISO-DE, ISO-UK, ISO-FR, ISO layout standard
  • Comes with a knob
  • Uses a Gasket Mount mounting style
  • Equipped with a 4000 mAh battery
  • Weighs about 750 g
  • Sized at 13 x 319 x 129 mm
  • Made with a Aluminum, ABS, Plastic case
  • Features PBT keycaps
  • Offers Yes, Rgb, North-face, Rgb North-face RGB lighting
Scores
  • Performance: 80.8
  • Build Quality: 86.4
  • Productivity: 94.2
  • Customizability: 92.3
  • Portability: 77.3
Scores
  • Performance: 80.2
  • Build Quality: 77.3
  • Productivity: 88.8
  • Customizability: 83
  • Portability: 81.9
Name
Keychron K3 Max
Name
Nuphy Air75 V3
Release year
2023
Release year
2025
Switch Options
Tactile, Linear, Clicky
Switch Options
Tactile, Linear, Clicky
Profile
Low Profile
Profile
Low Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
75%
Layout Size
75%
Layout Standard
ISO, ISO-UK, ISO-DE, ISO-Nordic, ISO-SW, ANSI
Layout Standard
ANSI, JIS, ISO-DE, ISO-UK, ISO-FR, ISO
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
Bluetooth, 2.4 GHz, Wired, Wireless
Connection
Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate
1000 Hz
Polling Rate
1000 Hz
Battery capacity
1550 mAh
Battery capacity
4000 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
Plate Mount
Mount Style
Gasket Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, White, North-face
Backlight
 
Rgb, North-face
Case Colors
Case Colors
Case Material
ABS, Aluminum, Wood, Plastic
Case Material
Aluminum, ABS, Plastic
Keycaps Material
PBT, ABS
Keycaps Material
PBT
Dimensions
22 x 306 x 116 mm
Dimensions
13 x 319 x 129 mm
Weight
580g
Weight
750g
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Pros and Trade-offs

Select the Keychron K3 Max if your priority is unbounded customization through QMK/VIA, you need specific ISO layouts, or you value open-source firmware. Opt for the Nuphy Air75 V3 if you require maximum battery life, prefer a gasket-mounted typing experience with a knob, and primarily use Apple devices. The K3 Max is a tool for tinkerers, while the Air75 V3 is a refined, endurance-focused companion.

Keychron K3 Max

  • +Native support for QMK and VIA firmware for extensive key remapping.
  • +Compatible with a wide range of ISO layouts for international users.
  • +Includes internal IXPE acoustic foam and latex foam for sound dampening.
  • +Offers a hot-swappable version compatible with Gateron and Keychron low-profile switches.
  • +Vendor page promotes a web-based configurator (Keychron Launcher) usable without software installs.
  • −Smaller 1550mAh battery compared to the competition.
  • −Uses a plate mount style instead of a gasket mount.
  • −Lower profile may be less ergonomic for some without the adjustable feet deployed.

Nuphy Air75 V3

  • +Substantially larger 4000mAh battery for extended wireless use.
  • +Features a gasket mount design for a potentially more cushioned typing feel.
  • +Includes a programmable knob for multimedia or application control.
  • +Thinner overall design (13mm) and includes dedicated mobile accessories like the NuFolio.
  • +Vendor description emphasizes deep integration with Mac and iPad ecosystems.
  • −Lacks support for QMK or VIA open-source firmware.
  • −Supports fewer international ISO layouts than the K3 Max.
  • −No mention of included internal sound-dampening foam in the provided description.

Which Keyboard Is Better for Your Needs?

The Keychron K3 Max wins for programming and modding due to its superior firmware support and customization depth. The Nuphy Air75 V3 takes the lead for office work, travel, and content creation, leveraging its exceptional battery, portable accessories, and included knob. Gaming is a close call, but the K3 Max's explicit gaming-focused marketing gives it a slight edge. Your workflow dictates the choice: open-source flexibility versus all-day endurance and multimedia control.

GamingKeychron K3 Max
  • •Both offer a 1000 Hz polling rate in 2.4 GHz and wired modes for low latency.
  • •The K3 Max's vendor page highlights its 1000 Hz polling rate for competitive gaming.
  • •The K3 Max supports more switch types including tactile options, which some gamers prefer.
OfficeNuphy Air75 V3
  • •The Air75 V3's massive 4000mAh battery promises significantly longer use between charges.
  • •Its vendor description emphasizes deep Mac/iPad integration and a comprehensive mobile accessory ecosystem.
  • •The 3-stage adjustable kickstand provides ergonomic flexibility for long typing sessions.
ProgrammingKeychron K3 Max
  • •Native QMK and VIA support on the K3 Max allows for limitless key remapping and macro creation.
  • •It supports a wider array of international ISO layouts (ISO, ISO-UK, ISO-DE, ISO-SW, ISO-Nordic).
  • •The vendor page promotes the Keychron Launcher web app for programming keys on any OS without downloads.
TravelNuphy Air75 V3
  • •The Air75 V3 is thinner at 13mm height compared to the K3 Max's 17mm.
  • •Its vendor page specifically markets the NuFolio case and 3-way stand for mobile use with MacBooks and iPads.
  • •The larger battery reduces the frequency of needing to pack a charging cable.
ModdingKeychron K3 Max
  • •The K3 Max explicitly supports QMK open-source firmware, allowing for deep firmware customization.
  • •Its vendor page details internal IXPE and latex foam layers for sound dampening, appealing to modders.
  • •It offers a choice of keycap materials (PBT or ABS) and more case material options including wood and aluminum.
Content CreationNuphy Air75 V3
  • •The Air75 V3 includes a programmable knob, useful for scrubbing timelines or adjusting volume.
  • •Its vendor description highlights a rhythm light bar that can function as a typing speed indicator.
  • •The gasket mount design may offer a softer, more consistent typing feel preferred for long writing sessions.

Frequently Asked Questions (FAQ)

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