NVIDIA has published few days ago a tech-demo (735MB) that shows the ray tracing in action through Unreal Engine 4.
Today, NVIDIA released RTX Technology Showcase – an interactive demo built from NVIDIA’s RTX Unreal Engine 4.26 Branch (NvRTX). RTX Technology Showcase project files are also available for further guidance and discovery of the benefits that ray tracing and AI brings to your projects. This application allows you to toggle ray-traced reflections, ray-traced translucency, DLSS, RTX Direct Illumination, and RTX Global Illumination to visualize the difference in real-time. The ray tracing SDKs are available through NvRTX while DLSS is available as a UE 4.26 plugin.
I tested the demo on a GeForce RTX 3060 Ti + Ryzen 7 5800X. The average framerate (top-right corner) was around 90 FPS in 1920×1080 with DLSS ON. If DLSS is disabled, the framerate drops from 90 to 40 FPS as you can see on one of the following screenshots: