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

This comparison is for buyers deciding between two premium low-profile 75% wireless keyboards. The choice is difficult because both offer hot-swappable switches, multi-device connectivity, and compact designs. The Keychron K3 V3 stands out with its open-source QMK firmware for limitless key remapping, while the Nuphy Air75 V3 counters with a much larger battery, a programmable knob, and a gasket mount for a potentially softer typing feel.

83
Keychron K3 QMK Wireless Mechanical Keyboard (ISO Layout) - Version 3
74
NuPhy Air75 V3 - Nova White / Blush nano / ANSI - US English

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  • Has Linear, Tactile, Clicky switch options
  • Built with the ANSI, ISO, ISO-UK, ISO-DE, ISO-SW, ISO-Nordic layout standard
  • Offers Normal ergonomics
  • Provides dedicated media keys
  • Supports QMK firmware
  • Supports VIA configuration
  • Features N-key rollover
  • 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
  • Has Low-Profile, Linear, Clicky switch options
  • Built with the ANSI, ISO, JIS, ISO-DE, ISO-FR layout standard
  • Offers Low Profile ergonomics
  • Comes with a knob
  • Connects via USB-C
  • Has built-in sound dampening
  • Uses a Gasket Mount mounting style
  • Supports Bluetooth, 2.4 GHz, Wired, Wireless connectivity
  • Equipped with a 4000 mAh battery
  • Weighs about 750 g
  • Sized at 13 x 319 x 129 mm
  • Made with a Aluminum, Plastic, ABS case
  • Features PBT keycaps
  • Offers Yes, Rgb, South-face, Rgb South-face RGB lighting
Scores
  • Performance: 82
  • Build Quality: 81.7
  • Productivity: 70.3
  • Customizability: 89.9
  • Portability: 74.7
Scores
  • Performance: 68.3
  • Build Quality: 69.8
  • Productivity: 83.8
  • Customizability: 68.5
  • Portability: 81.8
Name
Keychron K3 V3
Name
Nuphy Air75 V3
Release year
2024
Release year
2024
Switch Options
Linear, Tactile, Clicky
Switch Options
Low-Profile, Linear, Clicky
Profile
Low Profile
Profile
Low Profile
Hot Swappable
 
Hot Swappable
 
Layout Size
75%
Layout Size
75%
Layout Standard
ANSI, ISO, ISO-UK, ISO-DE, ISO-SW, ISO-Nordic
Layout Standard
ANSI, ISO, JIS, ISO-DE, ISO-FR
Layout Ergonomics
Normal
Layout Ergonomics
Low Profile
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, 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
Top Mount
Mount Style
Gasket Mount
Screw in Stabilizers
 
Screw in Stabilizers
 
Sound Dampening
 
Sound Dampening
 
Backlight
 
Rgb, White, North-face
Backlight
 
Rgb, South-face
Case Colors
Case Colors
Case Material
ABS, Aluminum
Case Material
Aluminum, Plastic, ABS
Keycaps Material
PBT, ABS
Keycaps Material
PBT
Dimensions
19 x 306 x 116 mm
Dimensions
13 x 319 x 129 mm
Weight
540g
Weight
750g
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Pros and Trade-offs

Your priority dictates the choice. If you value deep, open-source firmware customization for layers and macros, the Keychron K3 V3 is the clear winner. If your needs center around all-day wireless battery life, a useful knob for quick controls, and a sleek, travel-ready form factor, the Nuphy Air75 V3 is the better fit. Both are competent low-profile keyboards, but they excel in fundamentally different areas.

Keychron K3 V3

  • +Supports QMK and VIA open-source firmware for extensive key remapping and macros.
  • +Includes multiple layers of acoustic foam (IXPE, EPDM, latex) for sound dampening.
  • +Offers a wide array of ISO layout options (UK, DE, Swiss, Nordic).
  • +Web-based Keychron Launcher allows configuration without installed software.
  • +Features adjustable typing angles (2.5°, 4.2°, 6.5°) for ergonomics.
  • −Smaller 1550mAh battery compared to the competition.
  • −Lacks a dedicated programmable knob.
  • −Hot-swap compatibility is limited to specific low-profile mechanical switches.

Nuphy Air75 V3

  • +Massive 4000mAh battery for long-lasting wireless use.
  • +Includes a programmable knob for media control or custom functions.
  • +Features a gasket mount design for a potentially softer typing feel.
  • +Thinner profile (13mm) enhances portability.
  • +Comes with screw-in stabilizers and sound dampening features.
  • −Does not support QMK or VIA firmware, relying on proprietary NuPhy IO 2.0 software.
  • −Fewer ISO layout options compared to the K3 V3.
  • −Heavier at 750g, which may affect portability despite the slim design.

Which Keyboard Is Better for Your Needs?

The Nuphy Air75 V3 takes the lead for office work, travel, and content creation, primarily due to its exceptional battery life, included knob, and portable design. The Keychron K3 V3 is the stronger choice for programming and modding, thanks to its QMK/VIA firmware support and detailed acoustic foams. For gaming, the K3 V3 has a slight edge due to its vendor's emphasis on low latency, though both share a 1000Hz polling rate.

GamingKeychron K3 V3
  • •The Keychron K3 V3 lists a 1000Hz polling rate in wired mode, a spec matched by the Air75 V3.
  • •The K3 V3's vendor page explicitly mentions low latency for competitive games.
  • •Both keyboards support N-key rollover for simultaneous key presses.
OfficeNuphy Air75 V3
  • •The Nuphy Air75 V3 has a significantly larger 4000mAh battery, promising extended wireless use.
  • •It includes a programmable knob for quick volume or zoom control.
  • •Its vendor description emphasizes Mac/iPad compatibility and includes accessories like the NuFolio for mobility.
ProgrammingKeychron K3 V3
  • •The Keychron K3 V3 supports QMK and VIA firmware, allowing for deep, layer-based key remapping and macros.
  • •Its web-based Keychron Launcher tool is highlighted for productivity and customization.
  • •It offers a wider selection of ISO layout options, including UK, German, Swiss, and Nordic.
TravelNuphy Air75 V3
  • •The Nuphy Air75 V3 is thinner at 13mm compared to the K3 V3's 19mm height.
  • •Its massive 4000mAh battery reduces the need for frequent charging on the go.
  • •Vendor accessories like the NuFolio case are specifically designed for portability.
ModdingKeychron K3 V3
  • •The Keychron K3 V3's QMK support provides open-source firmware for advanced customization.
  • •Its vendor page details multiple internal foam layers (IXPE, EPDM, latex) for acoustic tuning.
  • •It is hot-swappable and compatible with Gateron and Keychron low-profile mechanical switches.
Content CreationNuphy Air75 V3
  • •The Nuphy Air75 V3 features a dedicated, programmable knob useful for timeline scrubbing or parameter adjustment.
  • •Its vendor page mentions a rhythm light bar that can function as a typing speed indicator.
  • •The gasket mount design may offer a softer, more consistent typing feel during long sessions.

Frequently Asked Questions (FAQ)

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