Epomaker Luma40 vs RT8240% Ortho or 75% LCD
Choose the Luma40 for its compact aluminum ortholinear design, or the RT82 for a more conventional 75% layout with an LCD and larger battery.
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5.0 · 3 reviews
from$92at Epomaker
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4.6 · 40 reviews
from$60at Epomaker
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Which one should you get?
Get the
Epomaker Luma40
Build quality in the top 15% of 40% boards under $150.
- CNC-cut aluminum case with a polycarbonate plate.
- Compact 40% ortholinear layout and low-profile design, weighing 410g.
- Tri-mode connectivity, plus QMK and VIA support.
- Low-profile switches and keycaps only. Standard MX keycaps will not fit.
- North-facing LEDs. Cherry-profile keycaps can hit the switch housing.
- Compact layout only. No function row, dedicated arrow keys, or numpad.
Get the
Epomaker RT82
Battery
Build quality in the top 30% of 75% boards under $100.
- 80-key 75% layout with a detachable 1.14-inch LCD screen.
- 4000mAh battery and tri-mode Bluetooth, 2.4 GHz, and wired connectivity.
- Gasket mount with five named dampening layers, including sandwich latex, IXPE, PET, bottom foam, and bottom silicone.
- South-facing LEDs. Shine-through legends stay dark, and some sculpted keycaps can clip the LED.
- No numpad.
Pick the Luma40 if you specifically want a light, compact ortholinear board with an aluminum case and QMK support, and are comfortable adapting to its 40% layout and low-profile keycap limits. Choose the RT82 if you prefer a more conventional 75% layout, want its detachable LCD, or value its larger battery. Both support wireless and wired use, hot-swapping, and VIA.
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 Luma40
Epomaker RT82
Layout size
40%
75%
Battery
1,450 mAh
4,000 mAh
A larger battery means fewer cables during the day
Low profile
Yes
No
Ergonomics
Ortholinear
Standard
Case material
Aluminum
ABS
- Epomaker Luma40
- Epomaker RT82
- Performance
- 7478
- Build quality
- 8174
- Productivity
- 8882
- Customizability
- 8578
- Portability
- 8579
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Max polling rate: 1,000 Hz
- VIA
- Sound dampening
- Plate material: Polycarbonate
What will you mostly use it for?
The RT82 is the more straightforward fit for gaming and office work when a larger key layout matters, and its LCD gives content-focused setups a distinctive display feature. The Luma40 takes the edge for travel thanks to its lower weight and smaller dimensions, and for programming or modding where its ortholinear layout and QMK support are priorities. Both are wireless-capable, hot-swappable boards with VIA support and sound-dampening features. Layout preference is the deciding factor for most buyers.
Pick the Epomaker RT82
- Both list 1000 Hz polling in wired and 2.4 GHz modes, with N-Key Rollover.
- The RT82 has an 80-key 75% layout, while the Luma40 uses a 47-key 40% ortholinear layout.
- The RT82 vendor lists linear switch options, including a silent linear option.
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Epomaker Luma40
3 owner reviews
“Hello there the luma 40 is one of my favorite keebs i used i can bring it anywhere with me i really love it thanks u guys”
Epomaker RT82
40 owner reviews
“I love the sound, the keyboard was shipped fast, but i have found some of the keys have input issues at times where it doesn't register the key being pushed”
“I received an informative sms two months ago that the keyboard is arriving, It has still not arrived.”
Epomaker Luma40 vs RT82 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
13 of 25 specs differ
Epomaker Luma40
Epomaker RT82
Switch options
Hot-swappable
Mount style
Low profile
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
VIA
N-key rollover
Mac & Windows
Released
Compare prices
Live prices from the stores we track, cheapest in-stock offer first.
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Lowest price across stores, Amazon excluded.
Epomaker Luma40 vs RT82: your questions
The Luma40 is a 40% ortholinear low-profile keyboard with an aluminum case, while the RT82 is an 80-key 75% board with an LCD screen. The RT82 offers a more conventional layout, and the Luma40 is substantially smaller and lighter.
The RT82 has a detachable 1.14-inch LCD screen. The Luma40 does not list a screen.
The Luma40 weighs 410g, while the RT82 weighs about 1000g. The Luma40 is also smaller at 240 x 87 mm, compared with the RT82 at approximately 327 x 143 mm.
The RT82 has a 4000mAh battery, compared with the Luma40’s 1450mAh battery. The vendor lists RT82 battery life up to 115 hours with RGB and screen off, while Luma40 battery life is listed up to 75 hours with RGB off.
No. The Luma40 requires low-profile switches and keycaps, and standard MX keycaps will not fit. Its north-facing LEDs may also interfere with Cherry-profile keycaps.
Yes, both keyboards are listed as hot-swappable. The RT82 supports 3/5-pin mechanical switches, while the Luma40 uses Kailh low-profile switches, so its low-profile socket requirement limits replacement options.
The Luma40 lists both QMK and VIA support. The RT82 lists VIA support, but QMK support is not listed for that model.
The RT82 is a practical choice if you want an 80-key 75% layout and its listed silent linear switch option. The Luma40 is lighter and low-profile, but its 40% layout lacks a function row and dedicated arrow keys.
The RT82 has south-facing LEDs, and its compatibility rules say shine-through legends stay dark. Some sculpted keycaps may also clip the LED.
The Luma40 may suit programmers seeking an ortholinear grid and both QMK and VIA support. The RT82 offers more keys in a familiar 75% layout and supports VIA, so the choice depends on layout preference.
Both list Bluetooth, 2.4 GHz wireless, and wired connectivity. Both also list 1000 Hz polling in wired and 2.4 GHz modes.
The RT82 vendor describes five layers: sandwich latex, IXPE switch pad, PET sound-enhancement pad, bottom foam, and bottom silicone. The Luma40 vendor lists multiple dampening materials, including PORON, IXPE, silicone, and PET, without giving the same five-layer count.
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