Ajazz AK820 Pro vs Epomaker TH40: 75% vs 40% Layout Showdown

Compare Ajazz AK820 Pro vs Epomaker TH40 Differences Side by Side

This comparison is for buyers torn between a feature-rich compact layout and an ultra-minimalist programmable board. The Ajazz AK820 Pro offers a familiar 75% form with a unique TFT screen, while the Epomaker TH40 shrinks to a 40% layout with a split spacebar, demanding layers for daily use. Both share gasket mounts, triple-mode connectivity, and hot-swap sockets, making the core decision about layout commitment versus out-of-box usability.

Model
Rating	4.6 stars (739 reviews)	3.9 stars (52 reviews)
Purchase Options
Main differences	Released in 2023 Available in a 75% layout Offers Normal ergonomics Comes with a knob Includes a Yes, TFT display Connects via USB-C Has built-in sound dampening Equipped with a 4000 mAh battery Weighs about 810 g Sized at 40 x 327 x 136 mm Made with a ABS, Aluminum case	Released in 2024 Available in a 40% layout Offers Split Spacebar ergonomics Includes a No display Supports QMK firmware Supports VIA configuration Runs at a 1000 Hz polling rate Equipped with a 3000 mAh battery Weighs about 500 g Sized at 35 x 258 x 97 mm Made with a ABS case
Score	Scores Performance: 60.9 Build Quality: 66.6 Productivity: 82.4 Customizability: 72.7 Portability: 79.1	Scores Performance: 74.1 Build Quality: 75.7 Productivity: 62.6 Customizability: 86.5 Portability: 84
Name	Name Ajazz AK820 Pro	Name Epomaker TH40
Release year	Release year 2023	Release year 2024
Switch Options	Switch Options Linear	Switch Options Linear
Profile	Profile Normal Profile	Profile Normal Profile
Hot Swappable	Hot Swappable	Hot Swappable
Layout Size	Layout Size 75%	Layout Size 40%
Layout Standard	Layout Standard ANSI	Layout Standard ANSI
Layout Ergonomics	Layout Ergonomics Normal	Layout Ergonomics Split Spacebar
Knob Support	Knob Support	Knob Support
Display Support	Display Support TFT	Display Support
Mac/Win Support	Mac/Win Support	Mac/Win Support
Multi-Media Keys	Multi-Media Keys	Multi-Media Keys
USB-C	USB-C	USB-C
USB passthrough	USB passthrough	USB passthrough
Connection	Connection Bluetooth, 2.4 GHz, Wired, Wireless	Connection Bluetooth, 2.4 GHz, Wired, Wireless
Polling Rate	Polling Rate -	Polling Rate 1000 Hz
Battery capacity	Battery capacity 4000 mAh	Battery capacity 3000 mAh
Hall Effect Support	Hall Effect Support	Hall Effect Support
QMK Support	QMK Support	QMK Support
VIA Support	VIA Support	VIA Support
VIAL Support	VIAL Support	VIAL Support
N-Key Rollover	N-Key Rollover	N-Key Rollover
Rapid Trigger	Rapid Trigger	Rapid Trigger
Mount Style	Mount Style Gasket Mount	Mount Style Gasket Mount
Screw in Stabilizers	Screw in Stabilizers	Screw in Stabilizers
Sound Dampening	Sound Dampening	Sound Dampening
Backlight	Backlight Rgb, South-face	Backlight Rgb, South-face
Case Colors	Case Colors	Case Colors
Case Material	Case Material ABS, Aluminum	Case Material ABS
Keycaps Material	Keycaps Material PBT	Keycaps Material PBT
Dimensions	Dimensions 40 x 327 x 136 mm	Dimensions 35 x 258 x 97 mm
Weight	Weight 810g	Weight 500g

Select a keyboard to compare

4.6 stars (739 reviews)

3.9 stars (52 reviews)

Released in 2023
Available in a 75% layout
Offers Normal ergonomics
Comes with a knob
Includes a Yes, TFT display
Connects via USB-C
Has built-in sound dampening
Equipped with a 4000 mAh battery
Weighs about 810 g
Sized at 40 x 327 x 136 mm
Made with a ABS, Aluminum case

Released in 2024
Available in a 40% layout
Offers Split Spacebar ergonomics
Includes a No display
Supports QMK firmware
Supports VIA configuration
Runs at a 1000 Hz polling rate
Equipped with a 3000 mAh battery
Weighs about 500 g
Sized at 35 x 258 x 97 mm
Made with a ABS case

Scores

Performance: 60.9
Build Quality: 66.6
Productivity: 82.4
Customizability: 72.7
Portability: 79.1

Scores

Performance: 74.1
Build Quality: 75.7
Productivity: 62.6
Customizability: 86.5
Portability: 84

Name

Ajazz AK820 Pro

Name

Epomaker TH40

Release year

2023

Release year

2024

Switch Options

Linear

Switch Options

Linear

Profile

Normal Profile

Profile

Normal Profile

Hot Swappable

Layout Size

75%

Layout Size

40%

Layout Standard

ANSI

Layout Standard

ANSI

Layout Ergonomics

Normal

Layout Ergonomics

Split Spacebar

Knob Support

Display Support

TFT

Display Support

Mac/Win Support

Multi-Media Keys

USB-C

USB passthrough

Connection

Bluetooth, 2.4 GHz, Wired, Wireless

Connection

Bluetooth, 2.4 GHz, Wired, Wireless

Polling Rate

1000 Hz

Battery capacity

4000 mAh

Battery capacity

3000 mAh

Hall Effect Support

QMK Support

VIA Support

VIAL Support

N-Key Rollover

Rapid Trigger

Mount Style

Gasket Mount

Mount Style

Gasket Mount

Screw in Stabilizers

Sound Dampening

Backlight

Rgb, South-face

Backlight

Rgb, South-face

Case Colors

Case Material

ABS, Aluminum

Case Material

ABS

Keycaps Material

PBT

Keycaps Material

PBT

Dimensions

40 x 327 x 136 mm

Dimensions

35 x 258 x 97 mm

Weight

810g

Weight

500g

Pros and Trade-offs

Your priority should be layout. If you want a keyboard that works immediately with a familiar key arrangement and bonus features like a screen, the Ajazz AK820 Pro is the sensible choice. If you are willing to learn layers and value the smallest possible footprint paired with extensive VIA programmability for a tailored experience, the Epomaker TH40 is the board to get. Consider the TH40's steeper learning curve a worthwhile investment for a truly personalized setup.

Ajazz AK820 Pro

+Includes a 0.85-inch TFT screen for customizable system info and visuals.
+75% layout offers a practical balance of compact size and dedicated arrow/function keys.
+Larger 4000mAh battery for extended wireless use.
+Comes with extra accessories including three extra keycaps and a 2-in-1 puller.
+Features a metal knob for media or application control.

−Larger and heavier (810g) than the 40% alternative.
−Lacks native VIA or QMK support for advanced key remapping.
−Case is primarily ABS plastic, with aluminum listed as a material but not detailed.

Epomaker TH40

+Ultra-compact 40% layout with split spacebar maximizes desk space and portability.
+Fully programmable via VIA software with QMK support for deep customization.
+Vendor description lists specific sound-dampening materials: Poron plate foam, IXPE switch pad, and bottom Poron foam.
+Lighter weight (500g) and smaller footprint for easy transport.

−40% layout requires heavy use of function layers for numbers, symbols, and arrows, demanding a learning curve.
−Smaller 3000mAh battery.
−Some user reviews mention difficulties getting VIA to recognize the keyboard initially.
−Includes fewer accessories in the box (only keyboard, cable, manual).

Which Keyboard Is Better for Your Needs?

The Ajazz AK820 Pro is the clear choice for traditional office work, gaming, and content creation where its 75% layout and included screen provide immediate utility. The Epomaker TH40 excels in specialized scenarios like programming and travel, where its ultra-compact size and deep VIA programmability are primary assets. For hardware modding, the TH40 has an edge due to its detailed foam kit and open firmware support.

GamingAjazz AK820 Pro

•The 75% layout includes dedicated arrow keys and function row, which are commonly used in games.
•Its larger form factor may provide more stability during intense use.
•The vendor listing confirms a 1000Hz polling rate in wired and 2.4GHz modes.

OfficeAjazz AK820 Pro

•The 75% layout retains number keys and punctuation on the primary layer for standard document and spreadsheet work.
•Includes a TFT screen for displaying battery status, date, and time.
•Larger battery capacity (4000mAh) may require less frequent charging.

ProgrammingEpomaker TH40

•Native VIA and QMK support allows for deep key remapping and macro creation essential for coding workflows.
•The split spacebar design can be programmed for layer toggles or common symbols.
•Four switchable layers, three of which are programmable, offer extensive customization for shortcuts.

TravelEpomaker TH40

•Smaller 40% layout dimensions (258 x 97 x 35 mm) and lighter weight (500g) take up less bag space.
•Ultra-compact design is built for portability, as stated in its vendor description.
•Includes tri-mode connectivity for use with multiple devices on the go.

ModdingEpomaker TH40

•Explicit support for VIA and QMK firmware offers extensive software customization.
•Vendor description mentions Poron plate foam, an IXPE switch pad, and bottom Poron foam for acoustic mods.
•Hot-swappable PCB supports 3-pin and 5-pin switches for hardware changes.

Content CreationAjazz AK820 Pro

•The 75% layout provides direct access to number keys for timeline scrubbing and layer shortcuts without memorization.
•Includes a metal knob, which can be mapped to volume or scrub controls in editing software.
•TFT screen can display system info or custom graphics relevant to a creative workflow.

Frequently Asked Questions (FAQ)