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Head to head · Prices checked Nov 10, 2026

Coolkiller CK108 HE vs Keychron K5 Ultra

Get the Coolkiller CK108 HE for hall effect. Get the Keychron K5 Ultra for qmk.

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Quick verdict

Which one should you get?

Get the

Coolkiller CK108 HE

Hall effect

Build quality in the top 45% of 100% boards under $300.

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

Get the

Keychron K5 Ultra

QMK

Build quality in the top 15% of 100% 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 CK108 HE

Keychron K5 Ultra

  • Hall effect (magnetic)

    Yes

    No

    Adjustable actuation helps in games and not in normal typing

  • Case material

    Aluminum

    ABS, Metal, Wood

  • Switch options

    Magnetic

    Clicky, Linear, Tactile

  • Weight

    1,500 g

    566 g

    Heavier boards stay planted and lighter ones travel

  • QMK

    No

    Yes

    The deep option when you want to remap every key

KeebFinder scores

How we score
  • Coolkiller CK108 HE
  • Keychron K5 Ultra
Performance
76
91
Build quality
56
75
Productivity
77
93
Customizability
69
89
Portability
53
56

What they share

  • Layout size: 100%
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Low profile
  • Knob
See every spec side by side

Full specs

Coolkiller CK108 HE vs Keychron K5 Ultra specs

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

11 of 25 specs differ

Coolkiller CK108 HE

Keychron K5 Ultra

Typing & switches

Switch options

Magnetic
Clicky, Linear, Tactile

Hall effect (magnetic)

Yes
No

Hot-swappable

Yes
Yes

Low profile

Yes
Yes

Sound dampening

No
Yes

Layout

Layout size

100%
100%

Layout standard

ANSI
ANSI, ISO, ISO-DE, ISO-ES, ISO-FR, ISO-IT, ISO-PT

Ergonomics

Standard
Standard

Knob

Yes
Yes

Display

None
None

Connectivity & battery

Connection

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

Max polling rate

—
8,000 Hz

Battery

—
2,600 mAh

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
ABS, Metal, Wood

Plate material

—
Aluminum

Keycaps

—
PBT

Weight

1,500 g
566 g

Dimensions

30 x 430 x 125 mm
—

Backlight

RGB
RGB, north-facing

Firmware & software

QMK

No
Yes

VIA

No
Yes

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2024
2026

For EU buyers

ISO layouts by store

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

Coolkiller CK108 HE

No ISO layout at the stores we track.

Keychron K5 Ultra

  • Keychron (DE)

    ISO-DE, ISO-FR, ISO-ES, ISO-IT

    In stockDoes not ship to you

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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