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Head to head · Prices checked Nov 11, 2026

Ktechs Rainy75 vs Yunzii YZ84

Get the Yunzii YZ84 for hot-swappable and n-key rollover.

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Quick verdict

Which one should you get?

Get the

Ktechs Rainy75

Build quality in the bottom 30% of 75% boards under $50.

Rules this board out

  • Switches are soldered. Swapping them means soldering.

Get the

Yunzii YZ84

Hot-swappable

Build quality in the bottom 20% of 75% boards under $50.

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.

Ktechs Rainy75

Yunzii YZ84

  • Connection

    Wireless

    Bluetooth, 2.4 GHz, Wired

    Wireless for several devices and wired for lower latency

  • Hot-swappable

    No

    Yes

    Switch changes without soldering

  • Display

    LED

    None

    A case display rather than a typing feature

  • Backlight

    None

    RGB

    RGB for looks and low light rather than speed

  • N-key rollover

    No

    Yes

KeebFinder scores

How we score
  • Ktechs Rainy75
  • Yunzii YZ84
Performance
47
80
Build quality
65
54
Productivity
46
77
Customizability
43
70
Portability
74
81

What they share

  • Layout size: 75%
See every spec side by side

Full specs

Ktechs Rainy75 vs Yunzii YZ84 specs

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

8 of 17 specs differ

Ktechs Rainy75

Yunzii YZ84

Typing & switches

Switch options

—
Clicky, Linear, Tactile

Hot-swappable

No
Yes

Mount style

Gasket Mount
—

Layout

Layout size

75%
75%

Layout standard

—
ANSI

Ergonomics

Standard
Standard

Display

LED
None

Connectivity & battery

Connection

Wireless
Bluetooth, 2.4 GHz, Wired

Max polling rate

1,000 Hz
—

Battery

3,500 mAh
—

USB-C

No
Yes

Build & materials

Plate material

FR4, Plastic, Polycarbonate
—

Keycaps

—
PBT

Backlight

None
RGB

Firmware & software

N-key rollover

No
Yes

Mac & Windows

No
Yes

Extras

Released

2024
2025

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.

Yunzii YZ842 stores

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