The Predator X38 sports the G-Sync hardware module, and also DisplayHDR 400 certification. All this rips along at a stock refresh of 144Hz, which can be cranked up to 175Hz. There is almost nothing on the technology tree that this monitor doesn’t sport. Which is why it is also expensive, at $2,400 (AU$3,198), +or- 2000euros.
For me it is overpriced compared to the LG 38GN950, that makes the panel, with HDR600, and even if there is no module.