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Head to head · Prices checked Nov 13, 2026

Yunzii KC84 SP vs Coolkiller CK75 SE

Get the Coolkiller CK75 SE for sound dampening.

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Quick verdict

Which one should you get?

Get the

Yunzii KC84 SP

Get the

Coolkiller CK75 SE

Sound dampening

Build quality in the bottom 50% of 75% boards under $100.

Rules this board out

  • South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.

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.

Yunzii KC84 SP

Coolkiller CK75 SE

  • Connection

    Wired

    Bluetooth, 2.4 GHz, Wired

    Wireless for several devices and wired for lower latency

  • Display

    None

    LED

    A case display rather than a typing feature

  • Sound dampening

    No

    Yes

  • Keycaps

    PBT

    PBT, PC

  • Backlight

    RGB

    RGB, south-facing

    RGB for looks and low light rather than speed

KeebFinder scores

How we score
  • Yunzii KC84 SP
  • Coolkiller CK75 SE
Performance
70
74
Build quality
49
65
Productivity
61
76
Customizability
63
66
Portability
46
80

What they share

  • Hot-swappable
  • Case material: Plastic
See every spec side by side

Full specs

Yunzii KC84 SP vs Coolkiller CK75 SE specs

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

7 of 21 specs differ

Yunzii KC84 SP

Coolkiller CK75 SE

Typing & switches

Switch options

Clicky, Linear, Tactile
—

Hot-swappable

Yes
Yes

Mount style

—
Gasket Mount

Sound dampening

No
Yes

Layout

Layout size

—
75%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Display

None
LED

Connectivity & battery

Connection

Wired
Bluetooth, 2.4 GHz, Wired

Max polling rate

—
1,000 Hz

Battery

Wired only
4,000 mAh

USB-C

Yes
Yes

Build & materials

Case material

Plastic
Plastic

Plate material

—
Polycarbonate

Keycaps

PBT
PBT, PC

Weight

—
1,000 g

Dimensions

27 x 320 x 135 mm
40 x 326 x 139 mm

Backlight

RGB
RGB, south-facing

Firmware & software

N-key rollover

Yes
Yes

Mac & Windows

Yes
Yes

Extras

Released

2025
2026

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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