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Head to head · Prices checked Nov 2, 2026

Coolkiller Spring vs Nuphy Air75 HE

Get the Nuphy Air75 HE for hall effect and rapid trigger.

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Quick verdict

Which one should you get?

Get the

Coolkiller Spring

Build quality in the bottom 50% of 65% boards under $200.

Rules this board out

  • Low-profile switches and keycaps only. Standard MX keycaps will not fit.
  • 65% layout. No function row and no numpad.

Get the

Nuphy Air75 HE

Hall effect

Build quality in the bottom 45% of 75% boards under $150.

Rules this board out

  • Magnetic switches only. Standard MX switches will not fit.
  • Low-profile switches and keycaps only. Standard MX keycaps will not fit.
  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
  • No numpad.

What actually differs

The differences that matter

Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.

Coolkiller Spring

Nuphy Air75 HE

  • Layout size

    65%

    75%

  • Hall effect (magnetic)

    No

    Yes

    Adjustable actuation helps in games and not in normal typing

  • Rapid trigger

    No

    Yes

    Faster resets help in games and not in normal typing

  • Connection

    Bluetooth, 2.4 GHz, Wired

    Wired

    Wireless for several devices and wired for lower latency

  • Case material

    Aluminum

    Aluminum, Plastic

KeebFinder scores

How we score
  • Coolkiller Spring
  • Nuphy Air75 HE
Performance
59
98
Build quality
64
63
Productivity
61
76
Customizability
71
68
Portability
90
66

What they share

  • Hot-swappable
  • Low profile
See every spec side by side

Full specs

Coolkiller Spring vs Nuphy Air75 HE specs

Every tracked spec, side by side. Rows marked with a dot differ between the boards.

14 of 26 specs differ

Coolkiller Spring

Nuphy Air75 HE

Typing & switches

Switch options

Linear
Magnetic

Hall effect (magnetic)

No
Yes

Rapid trigger

No
Yes

Hot-swappable

Yes
Yes

Mount style

—
Plate Mount

Low profile

Yes
Yes

Sound dampening

No
Yes

Layout

Layout size

65%
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Display

Yes
None

Media keys

No
Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Wired

Max polling rate

—
8,000 Hz

Battery

3,500 mAh
Wired only

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
Aluminum, Plastic

Plate material

—
Aluminum

Keycaps

PBT
PBT, PC

Weight

1,500 g
702 g

Dimensions

—
18 x 316 x 133 mm

Typing angle

—
3°

Backlight

RGB
RGB, south-facing

Firmware & software

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2023
2024

Where to buy

Compare prices

Live prices from the stores we track, cheapest in-stock offer first.

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Lowest price across stores, Amazon excluded.

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