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Head to head · Prices checked Nov 2, 2026

Coolkiller Spring vs Nuphy Air65 V3

Get the Coolkiller Spring for the 3,500 mAh battery. Get the Nuphy Air65 V3 for knob.

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Quick verdict

Which one should you get?

Get the

Coolkiller Spring

Battery

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.
  • No ISO layout. ISO-DE, UK, and other ISO variants are not offered.

Get the

Nuphy Air65 V3

Knob

Build quality in the top 35% of 65% boards under $150.

Rules this board out

  • Low-profile switches and keycaps only. Standard MX keycaps will not fit.
  • North-facing LEDs. Cherry-profile keycaps can hit the switch housing.

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 Air65 V3

  • Battery

    3,500 mAh

    2,500 mAh

    A larger battery means fewer cables during the day

  • Case material

    Aluminum

    Aluminum, Plastic, Polycarbonate

  • Switch options

    Linear

    Clicky, Low-profile

  • Knob

    No

    Yes

  • Display

    Yes

    None

    A case display rather than a typing feature

KeebFinder scores

How we score
  • Coolkiller Spring
  • Nuphy Air65 V3
Performance
59
73
Build quality
64
70
Productivity
61
76
Customizability
71
75
Portability
90
89

What they share

  • Layout size: 65%
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Low profile
  • Keycaps: PBT
See every spec side by side

Full specs

Coolkiller Spring vs Nuphy Air65 V3 specs

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

12 of 25 specs differ

Coolkiller Spring

Nuphy Air65 V3

Typing & switches

Switch options

Linear
Clicky, Low-profile

Hot-swappable

Yes
Yes

Mount style

—
Gasket Mount

Low profile

Yes
Yes

Sound dampening

No
Yes

Layout

Layout size

65%
65%

Layout standard

ANSI
ANSI, ISO, ISO-DE, ISO-FR, ISO-UK, JIS

Ergonomics

Standard
Standard

Knob

No
Yes

Display

Yes
None

Media keys

No
Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Bluetooth, 2.4 GHz, Wired

Max polling rate

—
1,000 Hz

Battery

3,500 mAhBetter
2,500 mAh

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
Aluminum, Plastic, Polycarbonate

Plate material

—
Polycarbonate

Keycaps

PBT
PBT

Weight

1,500 g
635 g

Dimensions

—
13 x 319 x 109 mm

Typing angle

—
10°

Backlight

RGB
RGB, north-facing

Firmware & software

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2023
2024

For EU buyers

ISO layouts by store

Which stores sell ISO-DE, UK, and the other regional layouts.

Coolkiller Spring

No ISO layout at the stores we track.

Nuphy Air65 V3

  • Input Gear

    ISO-DE

    In stockShips to you

Where to buy

Compare prices

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

Prices in USD are converted to your currency and can change at any time. KeebFinder may earn a commission when you buy through these links, at no extra cost to you.

Lowest price across stores, Amazon excluded.

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