Keychron J4 QMK vs RX Storm RX870
Get the Keychron J4 QMK for hot-swappable and qmk.
![[Out of Stock] RX870 TKL 80% Mechanical Keyboard](https://cdn.shopify.com/s/files/1/0549/0262/0278/files/GZY09776.jpg?v=1710146688&width=3840&quality=75)
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 J4 QMK
RX Storm RX870
Hot-swappable
Yes
No
Case material
ABS
Plastic
Weight
870 g
1,380 g
QMK
Yes
No
Sound dampening
Yes
No
- Keychron J4 QMK
- RX Storm RX870
- Performance
- 7957
- Build quality
- 6154
- Productivity
- 8447
- Customizability
- 7440
- Portability
- 7361
- Layout size: 80%
- Connection: Bluetooth, 2.4 GHz, Wired
- Battery: 4,000 mAh
- Max polling rate: 1,000 Hz
- Keycaps: PBT
Keychron J4 QMK vs RX Storm RX870 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
10 of 22 specs differ
Keychron J4 QMK
RX Storm RX870
Hot-swappable
Mount style
Sound dampening
Layout size
Layout standard
Ergonomics
Display
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Typing angle
Backlight
QMK
N-key rollover
Mac & Windows
Released
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