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Compare Nuphy Air75 V2 vs Keychron K3 Pro Differences Side by Side

This comparison is for buyers deciding between two premium low-profile 75% keyboards that both support QMK/VIA and tri-mode connectivity. The choice is difficult because both are highly rated and share core features like hot-swappable switches and a 1000Hz polling rate. The decision ultimately hinges on whether you prioritize the Nuphy's significantly larger battery and sound-dampening foams or the Keychron's broader selection of international layouts and potentially lower starting price.

89
NuPhy Air75 V2
87
Keychron K3 Pro QMK/VIA Wireless Mechanical Keyboard ISO Layout Collection

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4.6 (850)
4.6 (54)
  • Released in 2023
  • Has Clicky, Tactile, Linear switch options
  • Built with the ANSI layout standard
  • Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity
  • Equipped with a 4000 mAh battery
  • Weighs about 598 g
  • Sized at 14 x 316 x 133 mm
  • Made with a Aluminum, ABS case
  • Features PBT keycaps
  • Offers Yes, Rgb RGB lighting
  • Released in 2022
  • Has Linear, Tactile, Clicky switch options
  • Built with the ISO, JIS, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK, ANSI layout standard
  • Provides dedicated media keys
  • Uses a Tray Mount mounting style
  • Supports Bluetooth, Wired, Wireless, 2.4 GHz connectivity
  • Equipped with a 1550 mAh battery
  • Weighs about 930 g
  • Sized at 15 x 306 x 116 mm
  • Made with a Aluminum, Plastic, ABS case
  • Features ABS, PBT keycaps
  • Offers Yes, Rgb, South-face, Rgb South-face, White, North-face, Rgb North-face, White North-face RGB lighting
Scores
  • Performance: 80.7
  • Build Quality: 78
  • Productivity: 79.8
  • Customizability: 92.2
  • Portability: 79.4
Scores
  • Performance: 80.8
  • Build Quality: 81.3
  • Productivity: 79.9
  • Customizability: 88.9
  • Portability: 77.3
Name
Nuphy Air75 V2
Name
Keychron K3 Pro
Release year
2023
Release year
2022
Switch Options
Clicky, Tactile, Linear
Switch Options
Linear, Tactile, Clicky
Profile
Low Profile
Profile
Low Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
75%
Layout Size
75%
Layout Standard
ANSI
Layout Standard
ISO, JIS, ISO-DE, ISO-ES, ISO-FR, ISO-Nordic, ISO-SW, ISO-UK, 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
Bluetooth, 2.4 GHz, Wired, Wireless
Connection
Bluetooth, Wired, Wireless, 2.4 GHz
Polling Rate
1000 Hz
Polling Rate
1000 Hz
Battery capacity
4000 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
-
Mount Style
Tray Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb
Backlight
 
Rgb, South-face, White, North-face
Case Colors
Case Colors
Case Material
Aluminum, ABS
Case Material
Aluminum, Plastic, ABS
Keycaps Material
PBT
Keycaps Material
ABS, PBT
Dimensions
14 x 316 x 133 mm
Dimensions
15 x 306 x 116 mm
Weight
598g
Weight
930g
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Pros and Trade-offs

Your primary need dictates the winner. If long battery life, a lighter build, and an extensive modding ecosystem are paramount, the Nuphy Air75 V2 is the better investment. If you require a keyboard for a specific international layout like German ISO or French AZERTY, the Keychron K3 Pro is the only viable option between these two. For all other uses, evaluate the trade-offs in weight, battery, and accessory availability against potential cost savings.

Nuphy Air75 V2

  • +Large 4000mAh battery for extended wireless use.
  • +Includes internal sound-dampening foams (plate poron, IXPE) and spacebar silicone.
  • +Wide ecosystem of official accessories like the NuFolio V3, NuPack, and various wrist rests.
  • +Lighter weight (598g) enhances portability.
  • +Vendor highlights specific low-profile switch options like Moss (tactile) and Cowberry (linear).
  • −Only supports the ANSI layout, limiting international users.
  • −The vendor description mentions some users have had issues connecting to the VIA configurator.
  • −Official accessories like the NuFolio and wrist rests are separate purchases.

Keychron K3 Pro

  • +Extensive support for ISO, JIS, and many regional ISO layouts (e.g., ISO-DE, ISO-FR, ISO-Nordic).
  • +May be available at a lower starting price point.
  • +Vendor states it includes redesigned stabilizers for less wobble on large keys.
  • +Offers both double-shot PBT and dye-sublimated PBT keycap options depending on the edition.
  • −Smaller 1550mAh battery capacity.
  • −Heavier at 930g, which reduces portability.
  • −The vendor notes the hot-swappable version is only compatible with Gateron low-profile mechanical switches, not optical ones.

Which Keyboard Is Better for Your Needs?

The Nuphy Air75 V2 takes clear leads for gaming, travel, and modding due to its focus on wireless performance, lighter weight, larger battery, and pre-installed sound-dampening materials. The Keychron K3 Pro is the definitive choice for programmers and users who require specific ISO layouts beyond ANSI. For general office work and content creation, the keyboards are evenly matched, making the decision more about secondary preferences like accessory availability or initial cost.

GamingNuphy Air75 V2
  • •Both offer a 1000Hz polling rate in wired and 2.4GHz modes for low latency.
  • •The Air75 V2's vendor description emphasizes its 1000Hz wireless performance as being in the 'ranks of pro-gaming keyboards'.
  • •It includes a Cowberry switch option with a 1.2mm pre-travel designed for rapid firing.
OfficeTie
  • •Both support multi-device Bluetooth connectivity for switching between computers.
  • •Both are listed as compatible with Windows and macOS.
  • •Each keyboard includes Mac-specific keycaps in the box for easy OS switching.
ProgrammingKeychron K3 Pro
  • •The K3 Pro supports a wide array of ISO layouts including ISO-DE, ISO-FR, and ISO-Nordic, which is critical for non-ANSI users.
  • •Both offer full QMK/VIA support for deep key remapping and macro creation.
  • •The 75% layout on both preserves arrow and navigation keys essential for coding.
TravelNuphy Air75 V2
  • •The Air75 V2 is significantly lighter at 598g compared to the K3 Pro's 930g.
  • •Its larger 4000mAh battery promises longer use between charges.
  • •Nuphy offers dedicated travel accessories like the NuPack carrying case and NuFolio V3 laptop folio.
ModdingNuphy Air75 V2
  • •The Air75 V2's vendor description details specific internal mods like plate poron foam, IXPE foam, and spacebar silicone for sound tuning.
  • •Both are hot-swappable and support QMK/VIA for firmware customization.
  • •Nuphy sells a wide variety of proprietary low-profile switches, keycaps, and wrist rests directly.
Content CreationTie
  • •Both have RGB backlighting with multiple effects for aesthetic setups.
  • •The 75% layout saves desk space for graphics tablets or other peripherals.
  • •Programmable layers via QMK/VIA can be used for application-specific shortcuts.

Frequently Asked Questions (FAQ)

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Nuphy Air75 V2 vs Keychron K3 Pro: Battery Life vs Layout Choice