Monitor Specs Explained: Resolution, Refresh Rate, Panel Type & More

A monitor's spec sheet is full of numbers and acronyms that mean nothing until you know what they represent. This guide explains every major specification in plain English, so you can understand exactly what you are buying — and what you actually need for your use case.

Resolution describes how many pixels the monitor can display, written as width × height. More pixels means a sharper, more detailed image — and more room to fit windows side by side.

Refresh rate is measured in Hertz (Hz) — the number of times per second the monitor redraws the image. A 60Hz monitor updates 60 times per second; a 240Hz monitor updates 240 times per second.

Higher refresh rates produce smoother, more fluid motion. This is most noticeable in:

• Gaming — especially fast-paced titles like first-person shooters where every frame of information matters
• Scrolling — web pages and documents scroll much more smoothly at 120Hz+ even for everyday use
• Mouse cursor — feels more responsive and precise at high refresh rates

The panel technology determines colour accuracy, contrast, viewing angles, and response times. This is often the most important spec to understand.

IPS panels are the most popular choice for general-purpose monitors. They offer excellent colour accuracy, wide viewing angles (colours stay consistent even when viewed from the side), and good brightness. The traditional downside — slower response times — has been largely eliminated by modern Fast IPS and Nano IPS variants, which can match TN speeds while keeping IPS colour quality.

Best for: General use, content creation, photo and video editing, gaming where colour accuracy matters. The Gigabyte M27Q2 QD (reviewed in our recent bargain post) uses a SuperSpeed IPS panel delivering 210Hz with 99% DCI-P3 colour coverage — a prime example of how far IPS technology has come.

VA panels have the best contrast ratios of any LCD technology — typically 3000:1 to 5000:1, versus 1000:1 for IPS. This means deeper, truer blacks, making them excellent for watching movies in a dark room. However, VA panels can suffer from ghosting (smearing on fast-moving objects) and have narrower viewing angles than IPS.

Best for: Movie watching, dark-room gaming, general productivity where contrast matters more than speed.

TN panels are the oldest LCD technology. They have the fastest response times (sub-millisecond) and the highest refresh rates, but terrible viewing angles (the image washes out unless you are looking straight at it) and mediocre colour accuracy. TN was the default choice for competitive gaming monitors for many years, but Fast IPS panels have largely replaced it at the top end.

Best for: Professional esports players who prioritise response time above all else. Everyone else should choose IPS.

OLED monitors use self-emitting pixels — each pixel generates its own light and can turn completely off for true black. This produces infinite contrast ratios, perfect black levels, and instantaneous pixel response times. QD-OLED adds a Quantum Dot layer over an OLED panel, which significantly boosts colour brightness and volume (typically 90%+ DCI-P3).

The trade-offs: OLED monitors are more expensive, and carry a risk of image burn-in if static elements (like a taskbar or game HUD) are displayed at high brightness for extended periods. Modern OLED monitors include burn-in prevention features, but it remains a consideration for productivity use.

Best for: Gamers wanting the absolute best image quality, content creators who need perfect blacks, and anyone upgrading from a mid-range IPS panel who wants a premium experience.

Response time measures how quickly a pixel can change from one colour to another, measured in milliseconds (ms). Faster response times reduce ghosting — the blurry trail that follows fast-moving objects on screen.

There are two common measurements:

• GTG (Grey-to-Grey) — The most common spec. Measures how fast a pixel transitions between two shades of grey. Modern IPS panels achieve 1ms GTG.
• MPRT (Moving Picture Response Time) — A motion blur reduction metric that uses backlight strobing. Lower is better, but it reduces brightness.

In practice: Any modern IPS or TN monitor rated at 1ms GTG will be fast enough for gaming. The jump from 5ms to 1ms GTG is far less perceptible than the jump from 60Hz to 144Hz.

HDR (High Dynamic Range) allows a monitor to display a wider range of brightness levels and colours than standard SDR. Look for the VESA DisplayHDR certification tier:

• DisplayHDR 400 — Entry level. Minimum 400 nits peak brightness. Limited improvement over SDR on most content.
• DisplayHDR 600 — Noticeable improvement. 600 nits peak, wider colour gamut.
• DisplayHDR 1000 — Premium HDR. 1,000 nits peak brightness with local dimming. Dramatic improvement in HDR content.
• DisplayHDR True Black 400 — For OLED panels with true black levels. Stunning HDR performance despite lower peak brightness.

DisplayHDR 400 certifications (common on mid-range monitors) offer a modest improvement. To see the real benefit of HDR, look for DisplayHDR 600 or higher with local dimming.

Adaptive sync technologies eliminate screen tearing — the horizontal line that appears when your GPU outputs frames at a different rate than the monitor's refresh rate.

• AMD FreeSync / FreeSync Premium — Works with AMD graphics cards (and many Intel Arc GPUs). Open standard, available on most monitors. Free to implement.
• NVIDIA G-Sync Compatible — NVIDIA's certification for monitors that pass their adaptive sync testing. Works with NVIDIA GPUs using the monitor's built-in FreeSync implementation.
• NVIDIA G-Sync (full module) — Uses a proprietary hardware module inside the monitor. More expensive, but guaranteed smooth performance. Now largely unnecessary given how good G-Sync Compatible monitors have become.

The recommendation for most buyers: choose a monitor with both FreeSync Premium and G-Sync Compatible certifications — it works perfectly with both AMD and NVIDIA GPUs.