Topaz Video AI SDR to HDR conversion is powered by the Hyperion model, which expands SDR footage into HDR10 with brighter highlights and deeper shadows. Tested on an RTX 4070 in 2026, Topaz delivers a punchy, aggressive look, while the UniFab HDR Upconverter AI alternative renders closer to native HDR, adds Dolby Vision, and costs a one-time lifetime fee. This review covers the Hyperion model, benchmark speeds, verified 2026 pricing, honest drawbacks, and a head-to-head test.