Epomaker Luma40 vs MMD KM40Ortholinear vs Gasket Mount 40%
Choose the Epomaker Luma40 for its unique ortholinear layout and lower profile, or the MMD KM40 for a more traditional typing experience with a gasket-mounted feel.
Which one should you get?
Get the
Epomaker Luma40
Ortholinear
- Unique ortholinear, low-profile layout designed to reduce finger strain.
- Specified high-performance specs including 1000Hz polling rate and low latency modes.
- Includes QMK support in addition to VIA for advanced firmware customization.
- Uses a tray mount instead of a gasket mount, which may offer a less flexible typing feel.
- Battery capacity (1450mAh) is smaller than the KM40's 2000mAh battery.
- Keycaps are made from transparent PC plastic with silk-screen printed legends, which may be less durable than PBT.
Get the
MMD KM40
Gasket Mount 40%
- Gasket mount design for a potentially more cushioned and flexible typing experience.
- Larger 2000mAh battery for longer wireless use between charges.
- Uses durable, 1.7mm thick PBT keycaps with dye-sublimated legends.
- Heavier at 620g, making it less portable.
- Lacks a specified polling rate in its product information.
- Uses a standard 40% layout, which may not offer the same ergonomic claims as an ortholinear design.
Your primary typing preference dictates the choice here. If you want to try an ergonomic, grid-based layout with a focus on low-profile comfort and verified low-latency performance, the Epomaker Luma40 is the clear option. If you prefer a traditional staggered key arrangement and value a gasket-mounted typing feel with more robust internal foams, the MMD KM40 is the better board, provided you can accept its greater weight.
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
MMD KM40
Battery
1,450 mAh
2,000 mAh
Low profile
Yes
No
Ergonomics
Ortholinear
Standard
Switch options
Clicky, Linear
Linear, Tactile
Mount style
Tray Mount
Gasket Mount
- Epomaker Luma40
- MMD KM40
- Performance
- 7561
- Build quality
- 8083
- Productivity
- 8869
- Customizability
- 8684
- Portability
- 8784
- Layout size: 40%
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Case material: Aluminum
- QMK
- VIA
What will you mostly use it for?
The Epomaker Luma40 wins in most productivity and portability-focused categories due to its ortholinear layout, lower weight, and specified low-latency performance. It is the stronger choice for gaming, office work, programming, and travel. The MMD KM40 takes the lead for modding enthusiasts, thanks to its gasket mount design and more comprehensive internal foam. For content creation, both are equally capable, offering strong customization and aesthetic appeal.
Pick the Epomaker Luma40
- The Luma40 has a specified 1000Hz polling rate in its 2.4GHz and wired modes, which the KM40's listing does not mention.
- Epomaker lists specific latency figures of 3ms (USB) and 5ms (2.4GHz), providing a performance advantage for responsive gaming.
- Its north-facing RGB with light-transmitting keycaps can provide better per-key lighting for game profiles.
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”
MMD KM40
4 owner reviews
“Keycaps are dyesub, but still PBT Tactile switches feature a proper tactile feeling with great typing experience The case feels and looks really premium layer activation could be nicer but in the end you just gotta get used to the board”
Epomaker Luma40 vs MMD KM40 specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
11 of 24 specs differ
Epomaker Luma40
MMD KM40
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
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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Epomaker Luma40 vs MMD KM40: your questions
The Epomaker Luma40 uses an ortholinear layout where keys are aligned in a straight grid, which its manufacturer claims promotes more natural finger movement. The MMD KM40 uses a normal, staggered 40% layout, which is the traditional arrangement found on most keyboards.
The Epomaker Luma40 lists specific performance metrics, including a 1000Hz polling rate in its 2.4GHz and wired modes, and latency as low as 5ms on 2.4GHz. The MMD KM40's product description does not specify a polling rate, making direct performance comparison difficult based on available information.
Yes, both the Epomaker Luma40 and the MMD KM40 feature hot-swappable sockets. The Luma40 is compatible with 5-pin Kailh low-profile switches. The KM40 is listed as compatible with linear and tactile switches like the MMD Ink White and NP switches.
Both keyboards support VIA software, allowing you to remap keys, create layers, and program macros directly from a graphical interface. The Epomaker Luma40 also lists support for QMK firmware, which offers even deeper, code-based customization.
The Epomaker Luma40 is more portable by the numbers. It weighs 410g compared to the MMD KM40's 620g, and its low-profile design results in a thinner front height. The Luma40's vendor page also mentions it includes a detachable wrist strap.
The Epomaker Luma40 uses transparent PC plastic keycaps with silk-screen printed legends. The MMD KM40 uses thicker 1.7mm PBT keycaps with dye-sublimated legends, which are generally more resistant to shine and wear over time.
The Epomaker Luma40 is explicitly listed as compatible with Mac/Win/Android and includes Mac modifier keycaps. The MMD KM40's description does not specifically mention Mac compatibility, though VIA software is cross-platform.
Epomaker states the Luma40's 1450mAh battery lasts approximately 7 hours with RGB on and 75 hours with RGB off. The MMD KM40 has a larger 2000mAh battery, but its vendor description does not provide estimated battery life figures.
The Luma40 uses a padding-cushioned tray mount with layers of soft foams, a switch pad, and a bottom sponge. The KM40 is described as having a more comprehensive suite including Poron, IXPE, PET, anti-static foil, and a bottom mat for sound dampening.
This depends on your willingness to adapt. The MMD KM40's standard staggered layout will feel more familiar immediately. The Epomaker Luma40's ortholinear layout has a steeper learning curve but is marketed as more ergonomic for long-term use. Both support VIA for layer customization, which is essential for any 40% keyboard.
According to a customer review for the MMD KM40, both spacebars activate the same keystroke and cannot be used for different functions. This is a hardware limitation of its PCB design that VIA software cannot override.
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