ZMX GMK87 80% Wireless Keyboard or ZMX GMK81 75% Keyboard Display? Which ZMX Model to Buy
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You are comparing the zmx gmk87 keyboard barebones kit vs gmk81 barebones keyboard screen to find the best layout for your desk. Both models share triple-mode connectivity, hot-swappable PCBs, and gasket mounting for a similar typing feel. The main difference lies in the form factor and interface. The GMK87 offers an 80% layout with a volume knob, while the GMK81 provides a 75% layout with a compact screen. Each design serves different workflow needs.
Key differences
| Aspect | ZMX GMK87 80% Wireless Keyboard Kit | ZMX GMK81 75% Keyboard with Display |
|---|---|---|
| Form Factor | 80% | 75% |
| Media Controls | Volume Knob | Not listed |
| Display Customization | Single dynamic image set | Two dynamic image sets |
| Weight | 1.5 pounds | 1.2 pounds |
| Dimensions | 14.4 x 5.8 x 1.6 inches | Not listed |
Which one should you choose?
Choose ZMX GMK87 80% Wireless Keyboard Kit if
- You prefer the standard 80% layout with a full number row.
- You want physical volume control via a metal knob.
- You need a slightly larger footprint for easier key spacing.
Choose ZMX GMK81 75% Keyboard with Display if
- You want a more compact 75% layout to save desk space.
- You prefer customizing two separate dynamic image sets on the screen.
- You want a lighter keyboard that weighs 1.2 pounds.
Verdict: Choose the GMK87 if you value the traditional 80% layout and physical media controls. Select the GMK81 if you prioritize a compact 75% footprint and enhanced screen customization options. Both kits offer identical connectivity and hot-swap flexibility for your custom build.
Layout and Control Comparison
Form factor and size
The ZMX GMK87 80% Wireless Keyboard Kit measures 14.4 inches in length and weighs 1.5 pounds. This layout includes a full number pad, making it suitable for users who need numeric input without sacrificing too much desk space. The ZMX GMK81 75% Keyboard with Display is more compact. It weighs 1.2 pounds. The GMK81 omits the number pad to save room. This smaller footprint allows for more mouse movement space. You should choose the GMK87 if you type numbers frequently. Pick the GMK81 if you prefer a tighter layout for gaming or limited desks.
Media controls
The GMK87 includes a dedicated metal knob for volume control. This physical interface lets you adjust audio levels quickly without using software. The GMK81 does not list a physical knob in its specifications. You must use key combinations to adjust volume on the GMK81. If you manage media often, the knob on the GMK87 offers immediate tactile feedback. The GMK81 relies entirely on software or key presses for these adjustments. This hardware difference matters for users who change volume frequently during work or gaming sessions.
Display customization
Both keyboards feature a TFT LCD screen for real-time updates. The GMK87 allows customization of images, date, and time. The GMK81 screen supports two sets of dynamic images, battery status, date, time, connectivity, and operating system display. The GMK81 explicitly mentions OS display support, which helps you see if you are in Windows or Mac mode. Both screens provide visual feedback. The GMK81 offers slightly more detailed status information regarding the connection state. The GMK87 focuses on basic time and image customization. Both serve the purpose of visual feedback effectively.
Software and layers
Both models support VIA software for macro editing and key programming. The GMK87 supports customization with programmable macro VIA software. The GMK81 highlights three editable layers and FN layer programming. The GMK81 also allows you to change sleep time and RGB for each key in the driver. This granular control over individual key lighting and system settings is detailed in the GMK81 data. The GMK87 supports RGB customization but lists fewer specific software features. If you want deep layer management, the GMK81 data suggests more flexibility.
Battery and connectivity
Both keyboards share identical core connectivity specs. They support Bluetooth 5.0, 2.4GHz wireless, and USB-C wired connections. Both include a 3000mAh battery for long use. Both support NKRO (N-key rollover) for gaming. The GMK81 mentions auto switching between Windows and Mac modes. This feature simplifies setup for multi-OS users. The GMK87 data does not explicitly mention this auto-switch capability. For connectivity and power, they are equal. The GMK81 has a slight edge in OS compatibility features. You get the same wireless performance from both models.
Choose the right ZMX layout for you
Users needing a numeric keypad for data entry
The GMK87 offers an 80% layout that includes a full number pad. At 14.4 inches long, it provides more horizontal space than the 75% model. This size is ideal if you regularly type numbers or prefer the traditional TKL arrangement without sacrificing key functionality.
Buyers wanting a volume knob for media control
Only the GMK87 includes a dedicated metal volume knob. This physical control allows you to adjust audio levels instantly without using software or key combinations. If you frequently manage media volume on multiple devices, this hardware feature offers a more convenient and tactile experience.
Shoppers seeking a more compact footprint for their desk
The GMK81 features a 75% layout, which removes the number pad and arrow keys for a smaller footprint. Weighing 1.2 pounds, it is lighter and more space-efficient than the GMK87. This compact design frees up desk real estate while retaining essential navigation and function keys.
Users prioritizing lighter weight and portability
The GMK81 weighs 1.2 pounds, making it lighter than the 1.5-pound GMK87. Both kits share identical connectivity options and battery capacity, but the reduced mass of the 75% model makes it easier to transport. This is a practical advantage for users who move their setup often.
The products compared
ZMX GMK87 80% Wireless Keyboard Kit
Best for: compact 80% layouts with smart screens
- Form Factor
- 80%
- Connectivity
- Bluetooth 5.0, 2.4GHz, USB-C wired
- Hot-Swap Support
- Yes (3-pin/5-pin)
- Backlighting
- RGB
- Mounting Style
- Gasket Mount
- Media Controls
- Volume Knob
View on Amazon: ZMX GMK87 80% Wireless Keyboard Kit Affiliate link
The ZMX GMK87 is an 80% barebones mechanical keyboard kit featuring a gasket mount and triple-mode connectivity. It includes a TFT-LCD smart screen and a metal volume knob for media control. The board supports Bluetooth 5.0, 2.4GHz wireless, and wired USB-C connections. You can swap switches easily on the hot-swappable PCB. The 3000mAh battery provides lasting power for your custom build.
Pros
- 80% layout with integrated TFT-LCD screen
- Triple-mode connectivity: Bluetooth 5.0, 2.4GHz, and USB-C
- Hot-swappable PCB for 3-pin and 5-pin switches
- Gasket mount design for reduced vibration
- 3000mAh battery for extended wireless use
Cons
- 80% layout lacks dedicated number pad
- Requires separate purchase of switches and keycaps
- South-facing LEDs may limit certain keycap profiles
Good fit if
- You want a compact 80% layout with a screen
- You prefer gasket mount typing feel
- You need triple-mode wireless connectivity
Skip if
- You require a full-size keyboard with numpad
- You want a pre-built keyboard with switches included
- You need north-facing RGB LEDs
Verdict: The ZMX GMK87 80% Wireless Keyboard suits builders who value screen customization and gasket mounting in a compact form factor. It is ideal for users who want flexible connectivity and easy switch swapping without a number pad.
ZMX GMK81 75% Keyboard with Display
Best for: Compact layouts with screen and gasket mount
- Form Factor
- 75%
- Connectivity
- Bluetooth 5.0, 2.4GHz, USB-C wired
- Hot-Swap Support
- Yes (3-pin/5-pin)
- Backlighting
- RGB
- Mounting Style
- Gasket Mount
- Use
- Gaming
View on Amazon: ZMX GMK81 75% Keyboard with Display Affiliate link
The ZMX GMK81 is a 75% barebones mechanical keyboard kit featuring a built-in TFT LCD screen. It uses a gasket mount design with Poron foam and an EVA sound insulation mat to reduce vibration. The PCB is hot-swappable for 3-pin and 5-pin switches. Connectivity includes Bluetooth 5.0, 2.4GHz, and USB-C wired modes. It has a 3000mAh battery and south-facing RGB lighting.
Pros
- Built-in TFT LCD display for status and customization
- Gasket mount structure with Poron and EVA dampening
- Hot-swappable PCB for 3-pin and 5-pin switches
- Triple mode connectivity: Bluetooth 5.0, 2.4GHz, wired
Cons
- 75% layout lacks dedicated arrow keys and navigation cluster
- Heavier at 1.2 pounds compared to lighter alternatives
- No mention of software app control for mobile devices
Good fit if
- You want a compact layout with a digital display
- You prefer the gasket mount typing feel
- You need triple mode wireless connectivity
Skip if
- You require a full-sized keyboard with numpad
- You want a lighter portable keyboard
- You do not need a screen for status updates
Verdict: ZMX GMK81 75% Keyboard with Display suits builders who want a compact layout with a screen. It fits users who prioritize gasket mount feel and triple connectivity.
Specifications side by side
| Spec | ZMX GMK87 80% Wireless Keyboard Kit | ZMX GMK81 75% Keyboard with Display |
|---|---|---|
| Form Factor | 80% | 75% |
| Connectivity | Bluetooth 5.0, 2.4GHz, USB-C wired | Bluetooth 5.0, 2.4GHz, USB-C wired |
| Hot-Swap Support | Yes (3-pin/5-pin) | Yes (3-pin/5-pin) |
| Backlighting | RGB | RGB |
| Mounting Style | Gasket Mount | Gasket Mount |
| Media Controls | Volume Knob | not stated |
| Use | Gaming | Gaming |
| Dimensions | 14.4 × 5.8 × 1.6 inches | not stated |
| Weight | 1.5 pounds | 1.2 pounds |
| Color | White+Knob+Screen | White+Display |
| Model | GMK87 | GMK81 |
Frequently asked questions
Does the ZMX GMK87 include a screen?
Yes, the ZMX GMK87 80% Wireless Keyboard Kit comes with a display screen. The product data lists the color option as White+Knob+Screen, confirming the presence of a visual interface. This feature allows you to customize information directly on the keyboard without needing a separate monitor or software overlay.
Is the ZMX GMK81 hot-swappable?
Yes, the ZMX GMK81 75% Keyboard with Display supports hot-swappable switches. This specification means you can change mechanical switches without soldering. It allows for easy customization of your typing feel and sound profile, making it simple to upgrade components as you learn what you prefer.
Which ZMX model has a volume knob?
The ZMX GMK87 80% Wireless Keyboard Kit features a volume knob. This physical control provides direct adjustment of audio levels. The GMK81 data does not list a knob in its attributes, making the GMK87 the better choice if you prefer tactile hardware controls for media management.
Do both keyboards support wireless connectivity?
Yes, both models support wireless connectivity. The attributes for both the GMK87 and GMK81 list their connectivity type as Wireless. This allows you to use either keyboard without a cable connecting it to your computer, reducing desk clutter and offering more freedom in positioning your input device.
Which model is lighter?
The ZMX GMK81 75% Keyboard with Display is lighter. It weighs 1.2 pounds, while the GMK87 weighs 1.5 pounds. The difference in mass comes from the smaller 75% form factor and the absence of a number pad. If you prioritize a lighter build for portability, the GMK81 is the choice.
Does the GMK87 have a number pad?
Yes, the GMK87 uses an 80% layout which includes a full number pad. This layout measures 14.4 inches in length to accommodate the extra keys. It is designed for users who require numeric input for data entry or gaming, providing more horizontal space than the compact 75% GMK81 model.