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Head to head · Prices checked Nov 12, 2026

MMD KM21 Ultra vs KBDFans TofuPad

Get the MMD KM21 Ultra for knob. Get the KBDFans TofuPad for the 1,000 mAh battery.

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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.

MMD KM21 Ultra

KBDFans TofuPad

  • Connection

    Bluetooth, 2.4 GHz, Wired

    Wired, Bluetooth

    Wireless for several devices and wired for lower latency

  • Battery

    980 mAh

    1,000 mAh

    A larger battery means fewer cables during the day

  • Case material

    Aluminum

    Aluminum, Copper, Steel

  • Mount style

    Top Mount

    Gasket Mount, Top Mount

  • Knob

    Yes

    No

KeebFinder scores

How we score
  • MMD KM21 Ultra
  • KBDFans TofuPad
Performance
66
52
Build quality
81
92
Productivity
89
88
Customizability
89
85
Portability
85
88

What they share

  • Layout size: Numpad
  • Hot-swappable
  • VIA
  • Sound dampening
See every spec side by side

Full specs

MMD KM21 Ultra vs KBDFans TofuPad specs

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

9 of 20 specs differ

MMD KM21 Ultra

KBDFans TofuPad

Typing & switches

Hot-swappable

Yes
Yes

Mount style

Top Mount
Gasket Mount, Top Mount

Sound dampening

Yes
Yes

Layout

Layout size

Numpad
Numpad

Layout standard

ANSI
ANSI

Ergonomics

Standard
Standard

Knob

Yes
No

Display

None
None

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired
Wired, Bluetooth

Battery

980 mAh
1,000 mAhBetter

USB-C

Yes
Yes

Build & materials

Case material

Aluminum
Aluminum, Copper, Steel

Plate material

Plastic
Aluminum, CarbonFiber, FR4, Polycarbonate

Typing angle

—
9°

Backlight

RGB
None

Firmware & software

QMK

Yes
No

VIA

Yes
Yes

VIAL

No
Yes

Mac & Windows

Yes
Yes

Extras

Released

2026
2026

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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