Across the 65-inch Samsung 4K models shown, HDR support typically includes HDR10, HDR10+ and Hybrid Log-Gamma (HLG).
Model listings show a range of native refresh rates (examples include 60 Hz and 240 Hz) and also reference higher-refresh or motion-enhancement features such as 120 Hz and 144 Hz. Exact support varies by model, so check the specific model spec sheet for details.
VESA mounting patterns vary by model. The 65-inch options shown include common patterns such as 400×400, 400×300 and 200×200; confirm the VESA size on the specific model you plan to mount.