The Samsung QN55Q8FAAF (55″) and the Samsung QN85QN70FAF (85″) share several similarities in display characteristics, such as both offering a 4K (UHD) resolution with a pixel count of 3840 x 2160 px, and a 10-bit color depth supporting 1070 million colors. They also both have a 144Hz refresh rate, and support HDR10, HDR10+, and HLG, while lacking Dolby Vision support. The maximum horizontal and vertical viewing angles are identical at 178º for both models. They are equipped with anti-reflection coatings and ambient light sensors.
However, there are notable differences in their display setups. The QN85QN70FAF has a larger screen size of 84.5″, significantly bigger than the QN55Q8FAAF’s 54.6″. This larger screen results in a lower pixel density for the QN85QN70FAF, which is 52 ppi compared to the QN55Q8FAAF’s 81 ppi. In terms of adaptive synchronization, the QN55Q8FAAF supports AMD FreeSync and FreeSync Premium, while the QN85QN70FAF offers a broader range, including Nvidia G-Sync, AMD FreeSync Premium, and FreeSync Premium Pro.
The QN85QN70FAF also features Mini-LED backlighting in addition to QLED, LED-backlit, and LCD, while the QN55Q8FAAF is limited to QLED, LED-backlit, and LCD without the Mini-LED enhancement. Despite these differences, both displays provide excellent performance and are highly capable, with the QN85QN70FAF being the larger and more advanced model in terms of backlighting and adaptive sync options.