Display 8 differ Display diagonalDiffers 54.6 cm (21.5") 60.5 cm (23.8") Display resolutionDiffers 1920 x 1080 pixels 2560 x 1440 pixels Native aspect ratio 16:9 16:9 Display technology LED LED Touchscreen No No HD typeDiffers Full HD Quad HD Panel typeDiffers IPS PLS LED backlightKnown for one — Unknown — not stated by the source Backlight typeKnown for one W-LED — Unknown — not stated by the source Display brightness (typical)Differs 250 cd/m² 300 cd/m² Response time 5 ms 5 ms Display surfaceKnown for one Matt — Unknown — not stated by the source Screen shape Flat Flat Supported graphics resolutionsDiffers 1920 x 1080 (HD 1080) 2560 x 1440 Aspect ratioKnown for one 16:9 — Unknown — not stated by the source Contrast ratio (typical) 1000:1 1000:1 Contrast ratio (dynamic)Known for one 10000000:1 — Unknown — not stated by the source Dynamic contrast ratio marketing nameDiffers SmartContrast Mega Contrast Viewing angle, horizontal 178° 178° Viewing angle, vertical 178° 178° Display number of coloursDiffers 16.7 million colours 16.78 million colours Pixel pitchKnown for one 0.248 x 0.248 mm — Unknown — not stated by the source Pixel densityKnown for one 102 ppi — Unknown — not stated by the source Horizontal scan rangeKnown for one 30 - 83 kHz — Unknown — not stated by the source Vertical scan rangeKnown for one 56 - 76 Hz — Unknown — not stated by the source Viewable size, horizontalKnown for one 47.6 cm — Unknown — not stated by the source Viewable size, verticalKnown for one 26.8 cm — Unknown — not stated by the source Digital horizontal frequencyKnown for one 30 - 83 kHz — Unknown — not stated by the source Digital vertical frequencyKnown for one 56 - 76 Hz — Unknown — not stated by the source Sync-on-green (SOG)Known for one — Unknown — not stated by the source Display diagonal (metric)Known for one 54.6 cm — Unknown — not stated by the source DDC/CIKnown for one — Unknown — not stated by the source Colour gamut standardKnown for one sRGB — Unknown — not stated by the source 3D No No Separate H/V syncKnown for one — Unknown — not stated by the source Display sRGBKnown for one — Unknown — not stated by the source Display panel sizeKnown for one 21.5 inch / 54.6 cm — Unknown — not stated by the source Maximum refresh rateKnown for one — Unknown — not stated by the source 60 Hz Performance 2 differ NVIDIA G-SYNCKnown for one No — Unknown — not stated by the source AMD FreeSyncDiffers No Component video syncKnown for one Separate Sync, Sync-on-green (SOG) — Unknown — not stated by the source Flicker-free technologyKnown for one — Unknown — not stated by the source Low Blue Light technologyKnown for one — Unknown — not stated by the source Windows operating systems supportedDiffers Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x64, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 H Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x64 Mac operating systems supportedKnown for one Mac OS X 10.0 Cheetah, Mac OS X 10.1 Puma, Mac OS X 10.10 Yosemite, Mac OS X 10.11 El Capitan, Mac OS X 10.12 Sierra, Mac OS X 10.2 Jaguar, Mac OS X 10.3 Panther, Mac OS X 10.4 Tiger, Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Ma — Unknown — not stated by the source VESA Adaptive Sync supportKnown for one — Unknown — not stated by the source Game modeKnown for one — Unknown — not stated by the source Ergonomics 3 differ VESA mounting Panel mounting interface 100 x 100 mm 100 x 100 mm Cable lock slotDiffers No Cable lock slot typeKnown for one Kensington — Unknown — not stated by the source Height adjustmentDiffers No Tilt adjustment Tilt angle rangeDiffers -5 - 20° -5 - 24° On Screen Display (OSD)Known for one — Unknown — not stated by the source On Screen Display (OSD) languagesKnown for one Portuguese, Czech, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Korean, Polish, Russian, Simplified Chinese, Spanish, Swedish, Traditional Chinese, Turkish, Ukrainian — Unknown — not stated by the source Number of OSD languagesKnown for one 21 — Unknown — not stated by the source Plug and PlayKnown for one — Unknown — not stated by the source LED indicatorsKnown for one Operation, Stand-by — Unknown — not stated by the source Adjustable height (max)Known for one — Unknown — not stated by the source 13.5 cm PivotKnown for one — Unknown — not stated by the source Pivot angleKnown for one — Unknown — not stated by the source -2 - 92° SwivellingKnown for one — Unknown — not stated by the source Swivel angle rangeKnown for one — Unknown — not stated by the source -45 - 45° Picture-in-PictureKnown for one — Unknown — not stated by the source Other features identical Compatible operating systemsKnown for one Mac OS X; Windows 10 / 8.1 / 8 / 7 — Unknown — not stated by the source On/off switchKnown for one — Unknown — not stated by the source TV tuner integratedKnown for one No — Unknown — not stated by the source Exterior finish typeKnown for one Textured — Unknown — not stated by the source Effective viewing areaKnown for one 476.06 x 267.79 mm — Unknown — not stated by the source Energy efficiency class (legacy scale)Known for one A — Unknown — not stated by the source Heavy metals freeKnown for one Hg (mercury), Pb (lead) — Unknown — not stated by the source LowBlue modeKnown for one — Unknown — not stated by the source Monitor sync input signalKnown for one Separate Sync; Sync on Green — Unknown — not stated by the source Signal inputKnown for one VGA (Analog ); HDMI (digital, HDCP) — Unknown — not stated by the source Mercury contentKnown for one 0 mg — Unknown — not stated by the source Mean time between failures (MTBF)Known for one 50000 h — Unknown — not stated by the source CertificationKnown for one CU, SEMKO, cETLus, TUV/ISO9241-307, WEEE, TCO Certified, CE Mark, FCC Class B, ICES-003, RCM, UKRAINIAN, VCCI, CECP, TUV Cert. — blue light cut-off — Unknown — not stated by the source Regulatory ApprovalsKnown for one CU; SEMKO; cETLus; TUV/ISO9241-307; WEEE; TCO Certified; CE Mark; FCC Class B; ICES-003; RCM; UKRAINIAN; VCCI; CECP; TUV Cert. - blue light cut-off — Unknown — not stated by the source User controlsKnown for one Power On/Off; Menu/OK; Brightness/UP; Input/Down; SmartImage/Back — Unknown — not stated by the source Supplied AC adapter type AC AC Active display area (W x H)Known for one — Unknown — not stated by the source 526848 x 296.352 mm No flickeringKnown for one — Unknown — not stated by the source Samsung Eye Saver ModeKnown for one — Unknown — not stated by the source 
