One of the Radeon RX 6800 Series highlights is the support for Ray Tracing, albeit in a different implementation versus Nvidia’s dedicated RT cores. Each Compute Unit of the RX 6800 series contains a Ray Accelerator that improves Ray Tracing performance compared to the previous RDNA architecture, albeit at a cost. Let’s see how the Ray Accelerators in the 72 CUs of the RX 6800 XT hold up against the RTX 3080’s 2nd Gen RT cores.
3DMARK Port Royal
3DMark’s Port Royal benchmark is the only synthetic ray tracing benchmark available. Unlike previous ray tracing supported games, 3DMark Port Royal will run on non-RTX graphics cards and also serves as a good indicator of Ray Tracing performance.
Battlefield V is one of the first games to ever come out with Ray Tracing and DLSS. The two-year-old game is still taxing especially when RTX is turned on as it decreases the performance of both GPUs by as much as 55 percent. The RX 6800 XT not only loses in average FPS but also in frame rate stability when RTX is turned on.
Shadow of The Tomb Raider
Metro Exodus is the least forgiving ray tracing enabled game for the RX 6800 XT. On average, the RX 6800 XT suffers a 20% loss in frame rate when RTX is turned on and maintains a stable frame rate unlike in Battlefield V and Shadow of the Tomb Raider.
DIRT 5 – RAY TRACING
We managed to squeeze in a 1440p benchmark of the newly released Dirt 5 racing game. Unfortunately, the game greys out the Ray Tracing setting on Nvidia cards. Nonetheless, the performance hit on the AMD Radeon RX 6800 XT is not as bad compared to our three-game RTX stack. This might translate to better Ray tracing support and performance numbers for upcoming triple-A games particularly ones focused on PlayStation 5 and Xbox series X as both consoles are powered by the RDNA 2 architecture.