What Are Mechanical Keyboards and What Should You Know Before Buying One?

A mechanical keyboard is a keyboard in which each key sits on its own independent mechanical switch, rather than on a single rubber dome membrane. That one design difference drives most of what people care about: consistent tactile feel, longer service life, and the ability to change switch type, keycaps, and often the whole typing experience. If you type or game for hours a day and want a keyboard you can tune and repair rather than replace, a mechanical board is worth considering. If you want the quietest, cheapest, thinnest keyboard possible, a membrane board may still suit you better.

How mechanical keyboards differ from standard keyboards

On a membrane keyboard, pressing a key pushes down a rubber dome that collapses onto a circuit sheet. The feel is soft, the key travel is short, and when the dome wears out, individual keys cannot be fixed. On a mechanical keyboard, every key has its own spring-loaded switch with a metal contact, so each keypress registers the same way across the board and over time.

The practical consequences:

• Consistency: every key feels and actuates like every other key.
• Durability and repair: switches are rated for tens of millions of presses, and on hot-swap boards a failed switch can be pulled and replaced without soldering.
• Customization: switch type, keycap material and profile, and layout can all be chosen or changed.
• Trade-offs: mechanical boards are typically thicker, heavier, and louder than membrane boards, and good ones cost more.

The switch is the most important decision

The switch under each key determines how the keyboard feels and sounds. Most switches fall into three families:

Cherry MX is the best-known switch brand, and its color naming (red for linear, brown for tactile, blue for clicky) has become a shorthand across the industry. Many other manufacturers produce equivalents with slightly different weights and travel. Two specs matter when comparing switches: actuation force (how hard you must press) and actuation point (how far the key travels before it registers). Lighter, shorter-travel switches suit rapid gaming input; heavier switches suit people who rest their hands on the keys while typing.

If you are unsure, a tactile switch is the safest first choice, and a hot-swap board lets you change your mind later without buying a new keyboard.

Layout and size: full-size, TKL, 75%, 60%

Layout decides how much desk space you give up and which keys you keep.

• Full-size: includes a number pad. Best for spreadsheet, finance, and data-entry work.
• TKL (tenkeyless): drops the number pad but keeps function keys and arrow keys. A common compromise for gaming, since the mouse sits closer to the keyboard.
• 75%: compacts the function and arrow cluster into a tighter block, keeping most keys while saving width.
• 60%: removes the function row, arrow keys, and number pad; those functions move to layered key combinations. Great for portability and desk space, but there is a learning curve.

MechType's review coverage reflects this range directly, from a full aluminum TKL (Xiaomi Yuemi Pro MK02) to a 75% Bluetooth board (Akko 3084) and a 60% aluminum hot-swap model (GK64). If you have never used a compact layout, a 75% is usually an easier first step than a 60%.

Keycaps: PBT versus ABS

Keycaps affect both feel and how the board ages.

• ABS is smoother to the touch and can show richer colors, but it tends to develop a shine where fingers rest and wears faster.
• PBT is more textured, denser, and resists shining and wear over years of use. It is the more durable choice for a keyboard you plan to keep.

Keycap material is one of the cheapest upgrades you can make later, so it need not decide your first purchase.

Features worth checking before you buy

• Hot-swap sockets: lets you replace switches without soldering. Strongly recommended for a first mechanical keyboard.
• Wired versus wireless: wired is simpler and avoids charging; Bluetooth or 2.4 GHz wireless suits portable and multi-device setups, as on the Akko 3084.
• Build material: aluminum cases feel sturdier and reduce flex; plastic cases are lighter and cheaper.
• Rollover and input handling: for gaming, check that the board handles simultaneous and rapid repeated presses correctly. MechType's review of Xiaomi's earlier MK01 flagged only 2-key rollover and missed registrations on fast double taps, which is exactly the kind of limitation to verify before buying a gaming board.
• Gaming versus typing focus: gamers generally favor linear switches, low actuation force, and a TKL or smaller layout; typists often prefer tactile switches and a layout that keeps arrow keys.

A simple way to decide

1. Set your layout by whether you need a number pad (full-size) or desk space for a mouse (TKL or smaller).
2. Pick a switch family: linear for gaming, tactile for all-round use, clicky if noise is not a concern.
3. Confirm the board is hot-swap if you want to experiment later.
4. Check keycap material (PBT for longevity) and, for gaming, rollover and input handling.
5. Choose wired or wireless based on whether the keyboard stays on one desk.

If those criteria point to a board you can adjust over time, a mechanical keyboard is a good fit. If quiet operation and the lowest possible cost matter most, a membrane keyboard remains the more practical choice.