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Head to head · Prices checked Oct 21, 2026

Keychron K8 Ultra vs Royal Kludge S85

Get the Royal Kludge S85 for the 7,200 mAh battery and knob.

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.

Keychron K8 Ultra

Royal Kludge S85

  • Battery

    4,000 mAh

    7,200 mAh

  • Mount style

    Plate Mount

    Gasket Mount

  • Knob

    No

    Yes

  • Display

    None

    OLED

  • Weight

    1,299 g

    950 g

KeebFinder scores

How we score
  • Keychron K8 Ultra
  • Royal Kludge S85
Performance
90
67
Build quality
83
69
Productivity
95
84
Customizability
92
74
Portability
77
86

What they share

  • Layout size: 80%
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Sound dampening
  • Keycaps: PBT
See every spec side by side

From real owners

What owners say

Ratings and quotes collected from verified store reviews, including the critical ones.

Keychron K8 Ultra

5.0

4 owner reviews

Praise
“The order is exactly what i had ordered, and exceeds everything i had expected”
matthewVerified buyer· via Keychron

Royal Kludge S85

No owner reviews collected yet.

Full specs

Keychron K8 Ultra vs Royal Kludge S85 specs

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

12 of 26 specs differ

Keychron K8 Ultra

Royal Kludge S85

Typing & switches

Switch options

Clicky, Linear, Tactile
—

Hot-swappable

Yes
Yes

Mount style

Plate Mount
Gasket Mount

Sound dampening

Yes
Yes

Screw-in stabilizers

Yes
No

Layout

Layout size

80%
80%

Layout standard

ANSI, ISO, ISO-ES
ANSI

Ergonomics

Standard
Standard

Knob

No
Yes

Display

None
OLED

Media keys

Yes
No

Connectivity & battery

Connection

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

Max polling rate

8,000 Hz
—

Battery

4,000 mAh
7,200 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

ABS, Aluminum, Metal
—

Plate material

Steel
—

Keycaps

PBT
PBT

Weight

1,299 g
950 g

Dimensions

—
44 x 142 x 44 mm

Backlight

RGB, south-facing
RGB, south-facing

Firmware & software

QMK

Yes
No

VIA

Yes
No

N-key rollover

Yes
No

Mac & Windows

Yes
Yes

Extras

Released

2026
2024

Where to buy

Compare prices

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

Lowest price across stores, Amazon excluded.

  • KeychronHK

    In stock
    $119Visit
  • MKUS

    In stock
    $119Visit
  • Keychron (DE)DE

    In stock
    $150Visit
  • AmazonGlobal

    Check price
    Visit
  • Royal KludgeUS

    In stock
    $89Visit
  • AmazonGlobal

    Check price
    Visit

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