Both the Hisense 85S7N and the TCL 98QM9K share a strong display foundation: 4K (3840 x 2160) resolution, a 10-bit panel capable of rendering 1.07 billion colors, a 144Hz refresh rate, and full HDR format coverage including HDR10, HDR10+, Dolby Vision, and HLG. In practice, this means both TVs are well-equipped for cinematic HDR content and smooth motion handling, whether for movies or gaming.
The most impactful difference lies in panel technology and physical scale. The TCL 98QM9K uses a Mini-LED backlighting layer on top of its QLED LCD stack, which enables finer local dimming zones for improved contrast and more precise highlights — a meaningful real-world advantage over the Hisense 85S7N's standard LED-backlit QLED. On screen size, the TCL's 97.5″ panel dwarfs the Hisense's 74.5″, a difference that fundamentally changes the viewing experience in larger rooms. As a trade-off, the Hisense achieves a slightly higher pixel density of 59 ppi versus the TCL's 54 ppi, meaning individual pixels are a touch less visible up close — though at typical viewing distances for screens this large, both are effectively indistinguishable to the naked eye.
For gaming specifically, the TCL gains an incremental edge with support for AMD FreeSync Premium Pro in addition to standard FreeSync and FreeSync Premium, adding low-framerate compensation and HDR support within the sync window — features the Hisense lacks. All other display parameters — viewing angles, anti-reflection coating, and ambient light sensor — are identical. Overall, the TCL 98QM9K holds a clear display advantage thanks to its Mini-LED backlighting, substantially larger screen, and broader adaptive sync support, making it the stronger choice where display quality and immersion are the priority.