Head to head · Prices checked Nov 2, 2026

Nuphy Gem80 vs Mxrskey CK820

Get the Nuphy Gem80 for the 4,000 mAh battery. Get the Mxrskey CK820 for knob.

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Battery

Nuphy Gem80

from$170at Nuphy

Compare 4 stores

Knob

Mxrskey CK820

from$169at WhatGeek

90-day lowLowest price in 90 days

Compare 3 stores

Quick verdict

Which one should you get?

Get the

Nuphy Gem80

Battery

Build quality in the top 10% of 80% boards under $200.

Rules this board out

South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
No numpad.

$170 at Nuphy

Get the

Mxrskey CK820

Knob

Build quality in the top 40% of 75% boards under $200.

Rules this board out

South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
No numpad.

$169 at WhatGeek

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.

Nuphy Gem80

Mxrskey CK820

Layout size
80%
75%
Battery
4,000 mAh
3,000 mAh
A larger battery means fewer cables during the day
Case material
Aluminum, Polycarbonate
Aluminum
Knob
No
Yes
Weight
1,120 g
960 g
Heavier boards stay planted and lighter ones travel

KeebFinder scores

How we score

Nuphy Gem80
Mxrskey CK820

Performance: 79
52
Build quality: 84
72
Productivity: 88
91
Customizability: 94
85
Portability: 76
83

What they share

Connection: Bluetooth, 2.4 GHz, Wired
Hot-swappable
Mount style: Gasket Mount
Sound dampening

See every spec side by side

Full specs

Nuphy Gem80 vs Mxrskey CK820 specs

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

13 of 27 specs differ

Spec

Nuphy Gem80

Mxrskey CK820

Typing & switches

Switch options

Mechanical

—

Hot-swappable

Yes

Mount style

Gasket Mount

Sound dampening

Yes

Screw-in stabilizers

Yes

Layout

Layout size

80%

75%

Layout standard

ANSI, ISO, ISO-DE

ANSI

Ergonomics

Standard

Knob

Yes

Display

None

Media keys

Yes

Connectivity & battery

Connection

Bluetooth, 2.4 GHz, Wired

Max polling rate

1,000 Hz

—

Battery

4,000 mAhBetter

3,000 mAh

USB-C

Yes

Build & materials

Case material

Aluminum, Polycarbonate

Aluminum

Plate material

Aluminum, FR4, Polycarbonate, POM

Plastic

Keycaps

ABS, PBT

—

Weight

1,120 g

960 g

Dimensions

37 x 358 x 141 mm

30 x 105 x 346 mm

Typing angle

6°

—

Backlight

RGB, south-facing

Firmware & software

QMK

Yes

VIA

Yes

N-key rollover

Yes

Mac & Windows

Yes

Extras

Released

2024

2022

For EU buyers

ISO layouts by store

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

Nuphy Gem80

Input Gear
ISO-DE
Out of stockShips to you

Mxrskey CK820

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.

Nuphy Gem804 stores