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Compare Nuphy Air75 V2 vs Keychron K3 V3 Differences Side by Side

This comparison is for buyers deciding between two leading low-profile, 75% mechanical keyboards. Both the Nuphy Air75 V2 and Keychron K3 V3 feature hot-swappable switches, QMK/VIA programmability, and wireless connectivity, making the choice difficult. The decision ultimately hinges on whether you prioritize long-lasting wireless performance with a dedicated 2.4GHz dongle or require specific international keyboard layouts.

91
NuPhy Air75 V2 - Lunar Gray
83
Keychron K3 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 3

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  • Released in 2023
  • Has Low-Profile Mechanical, Linear, Tactile switch options
  • Built with the ANSI layout standard
  • Offers Low Profile ergonomics
  • Connects via USB-C
  • Has built-in sound dampening
  • Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity
  • Equipped with a 4000 mAh battery
  • Weighs about 598 g
  • Sized at 14 x 317 x 133 mm
  • Made with a Aluminum, Plastic, ABS case
  • Features PBT keycaps
  • Offers Yes, Rgb, South-face, Rgb South-face RGB lighting
  • Released in 2024
  • Has Linear, Tactile, Clicky switch options
  • Built with the ANSI, ISO, ISO-UK, ISO-DE, ISO-SW, ISO-Nordic layout standard
  • Offers Normal ergonomics
  • Uses a Top Mount mounting style
  • Supports Bluetooth, Wired, Wireless connectivity
  • Equipped with a 1550 mAh battery
  • Weighs about 540 g
  • Sized at 19 x 306 x 116 mm
  • Made with a ABS, Aluminum case
  • Features PBT, ABS keycaps
  • Offers Yes, Rgb, White, North-face, Rgb North-face, White North-face RGB lighting
Scores
  • Performance: 79.7
  • Build Quality: 78.1
  • Productivity: 88
  • Customizability: 94.6
  • Portability: 80.9
Scores
  • Performance: 81.9
  • Build Quality: 81.9
  • Productivity: 70.3
  • Customizability: 90.1
  • Portability: 74.6
Name
Nuphy Air75 V2
Name
Keychron K3 V3
Release year
2023
Release year
2024
Switch Options
Low-Profile Mechanical, Linear, Tactile
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
ANSI, ISO, ISO-UK, ISO-DE, ISO-SW, ISO-Nordic
Layout Ergonomics
Low Profile
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
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
Top Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, South-face
Backlight
 
Rgb, White, North-face
Case Colors
Case Colors
Case Material
Aluminum, Plastic, ABS
Case Material
ABS, Aluminum
Keycaps Material
PBT
Keycaps Material
PBT, ABS
Dimensions
14 x 317 x 133 mm
Dimensions
19 x 306 x 116 mm
Weight
598g
Weight
540g
*Something incorrect or missing? Please
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Pros and Trade-offs

Your primary need dictates the winner. If uninterrupted wireless use, low-latency gaming, and a rich accessory ecosystem are critical, the Nuphy Air75 V2 is the stronger choice. If you require a specific ISO layout for your region or prioritize an ultra-slim, lightweight design for portability, the Keychron K3 V3 is the keyboard for you. Both offer excellent core features like hot-swap sockets and QMK/VIA programmability.

Nuphy Air75 V2

  • +Large 4000mAh battery for extended wireless use.
  • +Includes a 2.4GHz wireless connection with a 1000Hz polling rate.
  • +Comes with pre-installed sound-dampening foams (plate poron, IXPE) and spacebar silicone.
  • +Wide range of official accessories, including NuFolio V3 case and various wrist rests.
  • +Includes extra keycaps and switches in the box.
  • −Heavier (598g) and slightly taller than the K3 V3.
  • −Only available in ANSI layout, lacking ISO options.
  • −No user reviews are available for the K3 V3 to compare community feedback directly.

Keychron K3 V3

  • +Available in multiple ISO layouts (UK, German, Swiss, Nordic).
  • +Slimmer build at 19mm tall and lighter at 540g.
  • +Features enhanced acoustic foams (IXPE, EPDM, latex) according to its listing.
  • +Uses Keychron Milk POM switches, which are described for a thocky sound.
  • +Includes redesigned stabilizers for larger keys.
  • −Smaller 1550mAh battery.
  • −Lacks a 2.4GHz wireless connection, relying solely on Bluetooth and wired modes.
  • −The vendor listing states its wireless polling rate is 90Hz, lower than the Air75 V2's 2.4GHz mode.

Which Keyboard Is Better for Your Needs?

The Nuphy Air75 V2 takes the lead for gaming and content creation due to its 2.4GHz wireless performance, gaming-optimized switches, and Mac-specific shortcuts. The Keychron K3 V3 is the clear choice for programmers needing ISO layouts and has a slight edge for travel due to its thinner profile. For office use and general typing, both are competent, with the choice boiling down to battery life versus layout preference.

GamingNuphy Air75 V2
  • •The Air75 V2 offers a 1000Hz polling rate in its 2.4GHz wireless mode, which Nuphy markets for low-latency gaming.
  • •Its Cowberry switch option has a shortened 1.2mm pre-travel for rapid actuation.
  • •The 4000mAh battery supports longer wireless gaming sessions.
OfficeTie
  • •Both support multi-device Bluetooth connectivity for switching between computers.
  • •Both are compatible with Windows and macOS and include relevant keycaps.
  • •The K3 V3 offers specific ISO layouts for European offices, while the Air75 V2 has a larger battery for less frequent charging.
ProgrammingKeychron K3 V3
  • •The Keychron K3 V3 is available in UK, German, Swiss, and Nordic ISO layouts, which are crucial for programmers in those regions.
  • •Both keyboards offer full QMK and VIA support for extensive key remapping and layer creation.
  • •The K3 V3's listing mentions 12 multimedia keys for workflow shortcuts.
TravelKeychron K3 V3
  • •The Keychron K3 V3 is slightly thinner at 19mm tall compared to the Air75 V2's dimensions.
  • •It is also lighter at 540g versus 598g.
  • •The Air75 V2's larger battery is an advantage, but the K3 V3's slimmer profile may fit better in bags.
ModdingNuphy Air75 V2
  • •The Air75 V2 vendor description details specific sound-dampening mods like plate poron foam, IXPE foam, and spacebar silicone.
  • •Nuphy offers a vast official ecosystem of keycaps, switches, wrist rests, and carrying cases.
  • •Both are hot-swappable and support QMK/VIA, but the Air75 V2's pre-installed acoustic treatments provide a modding head start.
Content CreationNuphy Air75 V2
  • •The Air75 V2 includes dedicated shortcut keycaps for macOS functions like Spotlight and Launchpad.
  • •Its vendor description highlights specific laptop compatibility, useful for creators using MacBooks or Surfaces.
  • •The 2.4GHz wireless mode offers a stable connection for video editing where Bluetooth interference can be an issue.

Frequently Asked Questions (FAQ)

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