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Head to head · Prices checked Nov 12, 2026

ACGAM S99 vs Royal Kludge S98 FR

Get the ACGAM S99 for the 6,000 mAh battery. Get the Royal Kludge S98 FR for the 4,000 Hz polling rate and knob.

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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.

ACGAM S99

Royal Kludge S98 FR

  • Battery

    6,000 mAh

    3,750 mAh

    A larger battery means fewer cables during the day

  • Max polling rate

    1,000 Hz

    4,000 Hz

    Higher polling helps competitive FPS and does nothing for typing

  • Knob

    No

    Yes

  • Display

    None

    LCD

    A case display rather than a typing feature

  • Weight

    1,200 g

    1,879 g

    Heavier boards stay planted and lighter ones travel

KeebFinder scores

How we score
  • ACGAM S99
  • Royal Kludge S98 FR
Performance
66
85
Build quality
69
66
Productivity
80
91
Customizability
65
79
Portability
68
57

What they share

  • Layout size: 96%
  • Connection: Bluetooth, 2.4 GHz, Wired
  • Hot-swappable
  • Sound dampening
See every spec side by side

Full specs

ACGAM S99 vs Royal Kludge S98 FR specs

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

11 of 23 specs differ

ACGAM S99

Royal Kludge S98 FR

Typing & switches

Switch options

Linear
—

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
—

Sound dampening

Yes
Yes

Screw-in stabilizers

No
Yes

Layout

Layout size

96%
96%

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

No
Yes

Display

None
LCD

Connectivity & battery

Connection

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

Max polling rate

1,000 Hz
4,000 HzBetter

Battery

6,000 mAhBetter
3,750 mAh

USB passthrough

No
Yes

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
—

Keycaps

PBT
ABS

Weight

1,200 g
1,879 g

Dimensions

46 x 143 x 386 mm
42 x 409 x 140 mm

Backlight

RGB
RGB

Firmware & software

N-key rollover

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2024
2025

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.

ACGAM S992 stores

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