A Glossary of Tablet Terms: From Refresh Rate to Stylus Compatibility

Refresh Rate

Measured in hertz (Hz), refresh rate describes how many times per second the screen redraws its image. A 60 Hz display is adequate for reading and video, while 90 Hz or 120 Hz makes scrolling and animation noticeably smoother. Higher rates consume more battery, so some tablets adjust dynamically based on what's on screen.

Resolution

Resolution is the number of pixels displayed horizontally by vertically (e.g., 2560 × 1600). More pixels generally means sharper text and images, but what matters most is pixel density — how tightly those pixels are packed — rather than raw numbers alone.

Pixel Density (PPI)

Pixels per inch (PPI) measures how many pixels fit into each inch of screen. Higher PPI means sharper, finer detail. Around 200–250 PPI is considered comfortable for reading at arm's length; anything above 300 PPI is typically considered retina-quality for typical viewing distances.

SoC (System on a Chip)

An SoC integrates the processor (CPU), graphics processor (GPU), memory controller, and other components onto a single chip. It largely determines how fast the tablet runs apps, handles multitasking, and processes graphics. A newer SoC generation typically improves both performance and energy efficiency.

RAM

RAM (Random Access Memory) is short-term memory that holds apps and data you are actively using. More RAM — typically 4 GB to 12 GB on tablets — allows more apps to stay open simultaneously without reloading. It does not affect storage space for files.

Storage (eMMC vs. UFS vs. NVMe)

Tablets use flash storage for saving files and apps. eMMC is older and slower; UFS and NVMe are faster standards found on higher-end models. Faster storage reduces app load times and file transfer speeds, which is noticeable during intensive use.

Stylus Compatibility

Stylus support varies significantly between tablets. Some require a proprietary active stylus (using Bluetooth or a specific protocol), others accept passive rubber-tip styli, and a few support universal standards. Key factors to check are whether the stylus must be purchased separately, its pressure sensitivity levels, and its input latency.

Stylus Latency

Latency in a stylus refers to the delay between moving the pen and seeing the mark appear on screen. Lower latency — measured in milliseconds — produces a more natural writing and drawing feel. A latency under 10 ms is generally considered imperceptible during note-taking.

Display Nits (Brightness)

Brightness is measured in nits. A tablet used mainly indoors may be adequate at 400–500 nits, while outdoor use in sunlight typically requires 600 nits or higher for comfortable visibility. Peak brightness on some models refers to HDR highlights, not sustained brightness.

Panel Type (LCD vs. OLED vs. AMOLED)

LCD panels use a backlight and are generally brighter and less expensive. OLED and AMOLED panels produce light per pixel, enabling true blacks, higher contrast, and more vivid color. OLED is often preferred for media consumption, though it can show burn-in over time with static images.

Cellular vs. Wi-Fi Only

Wi-Fi-only tablets connect to the internet through wireless networks. Cellular models include a modem and a SIM or eSIM slot, allowing mobile data connections — at a higher purchase price plus ongoing carrier costs. Consider whether you reliably have Wi-Fi wherever you use the device.

USB-C / Thunderbolt

The USB-C port standard is common on modern tablets, but port capabilities vary widely. Some support only charging and basic data transfer; others support video output to external monitors or faster Thunderbolt data speeds. Check the spec sheet rather than assuming functionality from the port shape alone.