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Head to head · Prices checked Oct 21, 2026

Fantech MAXFIT81 MK910 vs Keychron K3 QMK V3

Get the Fantech MAXFIT81 MK910 for the 4,000 mAh battery. Get the Keychron K3 QMK V3 for hall effect.

Keychron K3 QMK Kabellose Mechanische Tastatur (ISO Layout) - Version 3

Hall effect

Keychron K3 QMK V3

from$84at MK

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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.

Fantech MAXFIT81 MK910

Keychron K3 QMK V3

  • Hall effect (magnetic)

    No

    Yes

  • Connection

    Bluetooth, Wired, 2.4 GHz

    Bluetooth, Wired

  • Battery

    4,000 mAh

    1,550 mAh

  • Low profile

    No

    Yes

  • Switch options

    Clicky, Linear, Tactile

    Linear, Tactile

KeebFinder scores

How we score
  • Fantech MAXFIT81 MK910
  • Keychron K3 QMK V3
Performance
63
85
Build quality
68
71
Productivity
83
74
Customizability
82
78
Portability
81
77

What they share

  • Layout size: 75%
  • Hot-swappable
  • Case material: ABS, Aluminum
See every spec side by side

Full specs

Fantech MAXFIT81 MK910 vs Keychron K3 QMK V3 specs

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

18 of 26 specs differ

Fantech MAXFIT81 MK910

Keychron K3 QMK V3

Typing & switches

Switch options

Clicky, Linear, Tactile
Linear, Tactile

Hall effect (magnetic)

No
Yes

Hot-swappable

Yes
Yes

Mount style

Gasket Mount
Plate Mount

Low profile

No
Yes

Sound dampening

Yes
No

Layout

Layout size

75%
75%

Layout standard

ANSI
ANSI, ISO, ISO-DE, ISO-Nordic, ISO-UK

Ergonomics

Standard
Standard

Knob

Yes
No

Display

OLED
None

Media keys

No
Yes

Connectivity & battery

Connection

Bluetooth, Wired, 2.4 GHz
Bluetooth, Wired

Max polling rate

—
1,000 Hz

Battery

4,000 mAhBetter
1,550 mAh

USB-C

Yes
Yes

Build & materials

Case material

ABS, Aluminum
ABS, Aluminum

Plate material

FR4
Aluminum

Keycaps

ABS, PBT
ABS

Weight

1,093 g
540 g

Dimensions

45 x 303 x 104 mm
19 x 306 x 116 mm

Backlight

RGB, south-facing
RGB, north-facing

Firmware & software

QMK

No
Yes

N-key rollover

Yes
Yes

Mac & Windows

Yes
Yes

Extras

Released

2023
2024

Where to buy

Compare prices

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

Lowest price across stores, Amazon excluded.

  • MechkeysCN

    In stock
    $109Visit
  • AmazonGlobal

    Check price
    ~$109Visit
  • WhatGeekCN

    Out of stock
    $88Visit
  • MKUS

    In stock
    $84Visit
  • Keychron (DE)DE

    In stock
    $110Visit
  • AmazonGlobal

    Check price
    ~$84Visit

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.

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