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

This comparison is for users deciding between a highly versatile low-profile keyboard and a specialized gaming powerhouse. Both are 75% low-profile keyboards, making the choice difficult for those who want a slim form factor but prioritize different core functions. The Keychron K3 V3 offers broad compatibility and user-friendly modding, while the Nuphy Air75 HE is engineered for competitive gaming performance with unique magnetic switches.

Model
	83	61	Select a keyboard to compare
Rating	0.0 stars (0 reviews)	4.8 stars (138 reviews)
Purchase Options
Main differences	Has Linear, Tactile, Clicky switch options Supports hot-swappable switches Built with the ANSI, ISO, ISO-UK, ISO-DE, ISO-SW, ISO-Nordic layout standard Provides dedicated media keys Supports QMK firmware Supports VIA configuration Uses a Top Mount mounting style Supports Bluetooth, Wired, Wireless connectivity Runs at a 1000 Hz polling rate 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 Magnetic switch options Built with the ANSI layout standard Utilizes Hall effect sensors Enables rapid trigger functionality Has built-in sound dampening Uses a Plate Mount mounting style Supports Wired, Wired only connectivity Runs at a 8000 Hz polling rate Weighs about 702 g Sized at 18 x 133 x 316 mm Made with a Aluminum, Plastic case Features PBT, PC keycaps Offers Yes, Rgb, South-face, Rgb South-face RGB lighting
Score	Scores Performance: 81.8 Build Quality: 81.7 Productivity: 70.2 Customizability: 89.8 Portability: 75	Scores Performance: 97 Build Quality: 59.7 Productivity: 59.3 Customizability: 50.3 Portability: 60.4
Name	Name Keychron K3 V3	Name Nuphy Air75 HE
Release year	Release year 2024	Release year 2024
Switch Options	Switch Options Linear, Tactile, Clicky	Switch Options Magnetic
Profile	Profile Low Profile	Profile Low Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 75%	Layout Size 75%
Layout Standard	Layout Standard ANSI, ISO, ISO-UK, ISO-DE, ISO-SW, ISO-Nordic	Layout Standard ANSI
Layout Ergonomics	Layout Ergonomics Normal	Layout Ergonomics Normal
Knob Support	Knob Support	Knob Support
Display Support	Display Support	Display Support
Mac/Win Support	Mac/Win Support	Mac/Win Support
Multi-Media Keys	Multi-Media Keys	Multi-Media Keys
USB-C	USB-C	USB-C
USB passthrough	USB passthrough	USB passthrough
Connection	Connection Bluetooth, Wired, Wireless	Connection Wired, Wired only
Polling Rate	Polling Rate 1000 Hz	Polling Rate 8000 Hz
Battery capacity	Battery capacity 1550 mAh	Battery capacity -
Hall Effect Support	Hall Effect Support	Hall Effect Support
QMK Support	QMK Support	QMK Support
VIA Support	VIA Support	VIA Support
VIAL Support	VIAL Support	VIAL Support
N-Key Rollover	N-Key Rollover	N-Key Rollover
Rapid Trigger	Rapid Trigger	Rapid Trigger
Mount Style	Mount Style Top Mount	Mount Style Plate Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb, White, North-face	Backlight Rgb, South-face
Case Colors	Case Colors	Case Colors
Case Material	Case Material ABS, Aluminum	Case Material Aluminum, Plastic
Keycaps Material	Keycaps Material PBT, ABS	Keycaps Material PBT, PC
Dimensions	Dimensions 19 x 306 x 116 mm	Dimensions 18 x 133 x 316 mm
Weight	Weight 540g	Weight 702g

*Something incorrect or missing? Please

let me know

!

Pros and Trade-offs

Your primary need dictates the choice. If you require a single keyboard for work across multiple devices and enjoy tinkering with switches and keymaps, the Keychron K3 V3 is the more flexible tool. If your focus is purely on achieving the fastest possible response for gaming and you don't mind being tethered by a cable, the Nuphy Air75 HE's magnetic switches and high polling rate provide a specialized advantage.

Keychron K3 V3

+Bluetooth 5.2 and wired connectivity for multi-device use.
+Hot-swappable design compatible with various low-profile mechanical switches.
+Supports QMK and VIA firmware for extensive programmability via a web app.
+Available in multiple ISO layouts (UK, German, Swiss, Nordic).
+Includes enhanced acoustic foams (IXPE, EPDM, latex) for sound dampening.

−Lower 90 Hz polling rate in wireless mode may not be ideal for competitive gaming.
−Hot-swap compatibility is listed as limited to specific Keychron or Gateron low-profile mechanical switches.
−Uses north-facing RGB LEDs, which can cause interference with some keycap profiles.

Nuphy Air75 HE

+Very high 8000 Hz polling rate for minimal input latency.
+Hall Effect magnetic switches with adjustable actuation point (0.1-3.3mm) and Rapid Trigger.
+Includes sound-dampening materials (PCB foam, plate foam, bottom silicone).
+Vendor software (NuPhyIO) offers visualized, real-time adjustment of keystroke parameters.

−Wired-only connection, with no wireless or battery option.
−Plate-mounted stabilizers may offer less tuning potential than other styles.
−Heavier weight (702g) and lack of battery reduce portability.

Which Keyboard Is Better for Your Needs?

The Keychron K3 V3 is the clear choice for office work, programming, travel, and modding due to its wireless connectivity, multi-OS and layout support, and open-ended customization. The Nuphy Air75 HE dominates the gaming category with its high-speed magnetic switches and ultra-low latency. For content creation, both offer useful compact layouts, making it a tie based on whether you prioritize a wireless setup or advanced key programming.

GamingNuphy Air75 HE

•The Nuphy Air75 HE has an 8000 Hz polling rate and a stated 0.125ms latency.
•It features Hall Effect magnetic switches with adjustable actuation and Rapid Trigger functionality.
•The Keychron K3 V3 has a 1000 Hz polling rate in wired mode and 90 Hz in wireless mode.

OfficeKeychron K3 V3

•The Keychron K3 V3 supports Bluetooth for connecting to multiple devices.
•It offers multiple ISO layout options (UK, German, Swiss, Nordic) for international users.
•It includes keycaps for both macOS and Windows layouts.

ProgrammingKeychron K3 V3

•The Keychron K3 V3 supports QMK and VIA firmware for deep key remapping and macros.
•Its vendor description mentions compatibility with Windows, macOS, and Linux via a web app.
•The hot-swappable design allows for easy switch changes to suit typing preferences.

TravelKeychron K3 V3

•The Keychron K3 V3 is lighter at 540g compared to the Nuphy Air75 HE's 702g.
•It features a Bluetooth wireless connection, eliminating the need for a cable.
•It has a built-in 1550mAh battery for cordless use.

ModdingKeychron K3 V3

•The Keychron K3 V3 is hot-swappable for easy switch changes without soldering.
•It uses open-source QMK firmware, which the vendor states allows for community review and customization.
•The vendor description lists available aftermarket low-profile keycap sets and switches.

Content CreationTie

•Both keyboards have a 75% layout with multimedia keys, saving desk space.
•Both support RGB backlighting with multiple effect modes.
•The Keychron offers wireless convenience for a clean setup, while the Nuphy's software allows for complex macro programming via its web driver.