Epomaker EK21 vs Keychron K3 Ultra
Get the Keychron K3 Ultra for the 2,600 mAh battery and the 8,000 Hz polling rate.
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4.6 (36)4.6 · 36 reviews
from$33at Epomaker
90-day lowLowest price in 90 days
4.3 (9)4.3 · 9 reviews
from$109at MK
Which one should you get?
Get the
Epomaker EK21
Build quality in the top 25% of Numpad boards under $50.
- No ISO layout. ISO-DE, UK, and other ISO variants are not offered.
- Numpad only. This is not a full keyboard.
Get the
Keychron K3 Ultra
Battery
Build quality in the top 30% of 75% boards under $150.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
- No numpad.
The differences that matter
Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.
Epomaker EK21
Keychron K3 Ultra
Layout size
Numpad
75%
Battery
1,000 mAh
2,600 mAh
A larger battery means fewer cables during the day
Low profile
No
Yes
Max polling rate
1,000 Hz
8,000 Hz
Higher polling helps competitive FPS and does nothing for typing
Case material
ABS
ABS, Wood
- Epomaker EK21
- Keychron K3 Ultra
- Performance
- 7786
- Build quality
- 7675
- Productivity
- 8789
- Customizability
- 8286
- Portability
- 8882
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- VIA
- Sound dampening
- Keycaps: PBT
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Epomaker EK21
36 owner reviews
“Great wireless connectivity, sounds and feels as good as my 200$ custom keyboard. Great buy especially with the discount, would definitely buy again.”
“I have had this thing for years, I have updated to every Json file and firmware file I can find and it has NEVER worked right, Either the Json file or the firmware is jacked up and no one at Epomaker can give me any explanation. This numpad is the reason I…”
Keychron K3 Ultra
9 owner reviews
“Portable, match my minimalist setup, great feeling, high quality, durable”
“Meh. I dont like the wood grain and they make it difficult to return or exchange”
Epomaker EK21 vs Keychron K3 Ultra specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
14 of 25 specs differ
Epomaker EK21
Keychron K3 Ultra
Switch options
Hot-swappable
Mount style
Low profile
Sound dampening
Layout size
Layout standard
Ergonomics
Knob
Display
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
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.
ISO layouts by store
Which stores sell ISO-DE, UK, and the other regional layouts.
Epomaker EK21
No ISO layout at the stores we track.
Keychron K3 Ultra
- Go to Keychron
Keychron
ISO
Out of stockShips to you
- Go to Keychron (DE)
Keychron (DE)
ISO
In stockDoes not ship to you
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