Choosing a monitor: resolution, Hz, panel — what actually matters

Size is the diagonal in inches. Resolution is the number of pixels (1920×1080 = Full HD, 2560×1440 = QHD, 3840×2160 = 4K). The two must be chosen together, because their ratio defines pixel density (how sharp the image looks).

The rule of thumb: 24" at 1080p, 27" at 1440p, 32" at 4K. Put 4K on a 24" display and you won't see the difference (your eyes can't resolve individual pixels at that density). Put 1080p on a 32" and you'll see every pixel like a Lego brick — the image will look soft.

Ultra-wide (21:9, usually 34") changes the game: one display replaces two side-by-side. Great for productivity and cinema. For gaming, careful — some titles don't handle this ratio well.

Hz is the number of images shown per second. A 60 Hz monitor shows 60 images/sec. At 144 Hz, it's 144. The higher, the smoother motion feels — especially in gaming.

Office work, web, video: 60-75 Hz is plenty. You won't notice a difference reading email or watching Netflix.

Casual gaming (single-player, RPG, strategy): 120-144 Hz is a comfortable sweet spot. Beyond that, gains become marginal for most players.

Competitive gaming (FPS, esports): 144 Hz minimum, 240 Hz if your budget allows and your GPU can keep up. A 240 Hz screen driven by a PC pushing 60 fps is pointless.

IPS (In-Plane Switching): best colors, best viewing angles. A bit pricier; response time historically slower (but modern IPS panels are excellent). Default pick for 90% of people — office, creative, mixed gaming.

VA (Vertical Alignment): best contrast (deep blacks), perfect for cinema and narrative games. Colors are less accurate than IPS, viewing angles weaker. Consider it if you watch a lot of movies in a dark room.

TN (Twisted Nematic): fastest response time, cheapest. But poor colors and atrocious viewing angles. Historically loved by competitive gamers for 1 ms response — today, fast IPS and VA panels have replaced them. Avoid unless your budget is very tight.

OLED: stunning colors, perfect blacks, instant response. But burn-in risk if you display static elements (taskbar, window borders) for hours — a real issue for a work monitor. Reserve it for entertainment.

HDR (High Dynamic Range), in theory, means a brighter image with more nuance in bright and dark zones. In practice, it depends entirely on implementation.

HDR400 (or "basic HDR"): marketing. The monitor isn't bright enough for real HDR. Ignore this badge.

HDR600: acceptable as an entry point. You'll get a slight contrast boost on well-mastered HDR content (4K Blu-ray films, HDR games).

HDR1000 and up: now it gets interesting. But these monitors start at $800. For most uses, HDR is a "nice to have", not a deciding factor.

HDMI 2.0: supports 4K at 60 Hz. Perfect for 95% of uses. Most computers have it.

HDMI 2.1: required for 4K at 120 Hz or more. Essential if you're doing high-end gaming (RTX 4070+, Radeon RX 7800+) or using a new-gen console (PS5, Xbox Series X).

DisplayPort 1.4: equivalent to HDMI 2.1 on PC, often with fewer trade-offs. Standard on recent GPUs.

USB-C with Power Delivery: one cable does it all — display, data, laptop charging. Great for MacBooks and recent laptops. Check charging wattage (65 W minimum for a modern portable).

The trap: buying a 4K 144 Hz monitor, then realizing your PC only has HDMI 2.0 which caps at 60 Hz in 4K. Always check the ports on both sides before buying.

Office and remote work ($400-600): 27" 1440p IPS at 75 Hz, with USB-C if you have a recent laptop. You gain space to tile windows, and text is razor-sharp all day.

Versatile gaming ($450-750): 27" 1440p IPS at 144-165 Hz, HDMI 2.1. Good balance of immersion and smoothness. FreeSync or G-Sync are a welcome bonus to eliminate tearing.

Competitive gaming ($400-700): 24"-27" 1080p or 1440p at 240 Hz, fast IPS or modern TN. Response time and refresh rate trump size and resolution.

Creative work (photo/video/design, $600-1200): 27" 1440p or 32" 4K, IPS with 99% sRGB minimum (90% DCI-P3 if you do pro photo/video). Color accuracy beats refresh rate.

Cinema/entertainment ($500-900): 32-34" ultra-wide VA or OLED, 120 Hz minimum, HDR600 or better. Contrast and immersion matter more than color accuracy.

"1 ms response time" (GtG): nearly every monitor claims this today. Check independent tests (Rtings, TFT Central) for the real figure.

"Curved": on an ultra-wide, it improves immersion. On a 24" or 27" flat-ratio display, it's a gimmick.

"Gaming monitor": not a technical label. Check real specs (Hz, panel type, response time).

"4K" without HDMI 2.1 or a recent DisplayPort: you'll be capped at 60 Hz. Fine for office, not for smooth gaming.

No-name monitors 40% cheaper than brand names: often recycled panels with minimal QC. You save $150 but you're playing the lottery. Stick with LG, Dell, ASUS, MSI, AOC, or Samsung.