I'm thinking about getting a new monitor, because my Acer AL1916W has a maximum resolution of 1440 × 900 whereas my notebook has 2560 × 1440 (check yours). This means when I connect the two, windows I drag to my external monitor are always super big.
- Screen size: How far away from the monitor are you? How big much space do you have?
- Resolution: The higher, the smaller contents can be distinguished - but when it gets higher, your PC has to compute more and thus might become slower
- Brightness in cd/m2: The brighter, the easier you can see things at sunlight
- Connectors: HDMI should be available today
- Reaction time: Advertised a lot, but I guess irrelevant for most people.
- USB-Hub: Useful, if you want to power other USB devices nearby.
- Screen size: I would not buy a monitor which is smaller than 19" (then I could use my laptop directly), but also not one which is bigger than 27". Everything else I'm not sure about.
- Connectors: I expect HDMI. The rest is a plus. See my post on Video display interfaces.
- Power: I would prefer a new monitor to have Power via USB-C and an external power adapter for it. Not too important, though.
Things I ignore:
- Reaction time: When I go to humanbenchmark.com, my reaction time seems to be roughly 300ms. So I guess I notice probably 100ms in difference in reaction time. Everything below just feels instantaneous. No need to go below 10ms.
Just as an example, here is my current external monitor and two more:
|Model||Acer AL1916W||Asus MG278Q||ThinkVision P27h|
|Price in 2019||50 EUR||480 EUR||312 EUR|
|Panel||TN||TN||TFT-LCD, IPS, White LED backlight|
|Dimensions in mm (W x H x D)||462 × 385 × 180||625 × 563 × 233||612 × 513 × 270|
|Power consumption (avg / max)||60 W||38.7 W / 45 W||38 W / 140 W|
|Power supply unit||Built-in, C13|
|Weight||4 kg||7.3 kg||7.0 kg|
|Resolution||1440 × 900 (WXGA+)||2560 × 1440 (WQHD)||2560 × 1440 (WQHD)|
|Viewing angle 10:1 (v)||130°||160°||178°|
|Viewing angle 10:1 (h)||150°||170°||178°|
|Pixel pitch||0.290 mm||0.230 mm||0.230 mm|
|Contrast ratio (static)||500 : 1||1000:1||1000:1|
|Contrast ratio (dynamic)||700 : 1||100 000 000:1||3 000 000:1|
|Colors||16.2 Mio.||16.7 Millionen||1073 Mio.|
|Brightness||300 cd/m²||350 cd/m²||350 cd/m²|
|Pixel response time||8ms||1ms||4ms (extreme) / 6ms (typical)|
|Variable Synchronisierung||Adaptive Sync/AMD FreeSync, 40-144Hz (DisplayPort), mit LFC-Support, ohne HDR, NVIDIA G-Sync Compatible (Quelle: NVIDIA)|
|90° Rotating screen (pivoting)||✗||✓||✓|
|Tilt||✗||20° back, ~-5° forward||30° back, -5° forward|
|HDMI||✗||2||2× HDMI (1.4)|
|DVI||✗||1× DVI-D (digital & dual link)||0|
|USB-C||✗||✗||USB 3.1 Type-C|
|Display Port||✗||✓||DisplayPort (1.2) + DisplayPort-out|
|USB Hub||one USB 3.1 Type-C upstream port, four USB 3.0 Type-A downstream ports|
TL;DR: IPS for work, TN for gaming, VN if you like Samsung and are willing to pay more.
Best explained in the Lenovo ThinkVision P27H Monitor video.
- P27u-10: 27 inch, Ultra HD resolution of 3840 x 2160,
- P27h-10: 27 inch, QHD resolution of 2560 x 1440, black
- P27q-10: 27 inch, QHD resolution of 2560 x 1440, silver (I think black looks better)
- ThinkVision X1: 30 Bit colors, resolution of 3840 x 2160, 766 EUR
- AOC AGON AG241QX: Similar to ThinkVision P27h, but smaller and worse viewing angles. Better contrast and has speakers, though (comparison)
- BenQ PD2500Q: Similar to ThinkVision P27h, but smaller, worse colors. Does have speakers, though (comparison)
- Asus PB277Q: Similar to ThinkVision P27h, but worse viewing angles and doesn't have USB ports. Way better contrast and has speakers, though (comparison)
- HP 27XQ: Similar to ThinkVision P27h, but worse colors and viewing angles (comparison)
- pcpartpicker.com is nice to get a reasonable list
- displayspecifications.com is nice to look specs up