To see these improvements for yourself, head on over to our Call of Duty: Modern Warfare Graphics and Performance Guide. Ray tracing is available now in the single-player campaign, as well as all of the core multiplayer modes. Ray tracing will not be enabled in the Ground War multiplayer and Special Ops co-op modes.
While Call of Duty: Modern Warfare 3 did launch with support for upscalers like DLSS 3 and XeSS, it does not feature ray-tracing. That will change with a patch this week, bringing ray-traced graphics to the game, but there's a catch ray-tracing will only be shown in the pre-game lobby and not during actual gameplay.