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Head to head · Prices checked Nov 1, 2026

Redragon CENTAUR K506 vs Ktechs Rainy75

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Quick verdict

Which one should you get?

Get the

Redragon CENTAUR K506

Build quality in the bottom 25% of 100% boards under $100.

Rules this board out

  • Switches are soldered. Swapping them means soldering.

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

Redragon CENTAUR K506

Ktechs Rainy75

  • Layout size

    100%

    75%

  • Connection

    Wired

    Wireless

    Wireless for several devices and wired for lower latency

  • Mount style

    Bottom Mount

    Gasket Mount

  • Display

    None

    LED

    A case display rather than a typing feature

  • Backlight

    RGB

    None

    RGB for looks and low light rather than speed

KeebFinder scores

How we score
  • Redragon CENTAUR K506
  • Ktechs Rainy75
Performance
62
47
Build quality
47
65
Productivity
50
46
Customizability
48
42
Portability
41
74
See every spec side by side

Full specs

Redragon CENTAUR K506 vs Ktechs Rainy75 specs

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

6 of 14 specs differ

Redragon CENTAUR K506

Ktechs Rainy75

Typing & switches

Mount style

Bottom Mount
Gasket Mount

Layout

Layout size

100%
75%

Layout standard

ISO, ISO-FR
—

Ergonomics

Standard
Standard

Display

None
LED

Connectivity & battery

Connection

Wired
Wireless

Max polling rate

—
1,000 Hz

Battery

Wired only
3,500 mAh

Build & materials

Case material

Plastic
—

Plate material

—
FR4, Plastic, Polycarbonate

Weight

1,100 g
—

Dimensions

35 x 440 x 135 mm
—

Backlight

RGB
None

Extras

Released

2025
2024

For EU buyers

ISO layouts by store

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

Redragon CENTAUR K506

Listed on the product, not split by store: ISO-FR.

Ktechs Rainy75

No ISO layout at the stores we track.

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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