NVIDIA has unleashed a technological marvel with the release of its “Zorah” tech demo, a full path-tracing showcase built on Unreal Engine 5 (UE5) that demands a staggering 108GB of storage. First revealed at CES 2025 and updated for the Game Developers Conference (GDC) 2025, Zorah is now Available for Download, offering enthusiasts and developers a chance to experience the future of real-time graphics powered by the GeForce RTX 50 series and NVIDIA’s Blackwell architecture.
Zorah is a neural rendering technology demonstration that pushes the boundaries of real-time graphics. Unlike traditional rendering techniques that rely on rasterization, Zorah is entirely path-traced, delivering photorealistic visuals with physically accurate lighting, shadows, and materials. Built on NVIDIA’s custom RTX branch of Unreal Engine 5 (NvRTX), the demo showcases the capabilities of the RTX 50 series GPUs, particularly the flagship GeForce RTX 5090. Its massive 108GB size reflects the inclusion of nearly 500 million triangles per scene, over 30,000 materials, 2,000 particle lights, and 1,500 high-resolution textures, all rendered in real time.
Source : NVIDIA
The Demo, Available for Download via NVIDIA’s RTX Kit, is not a packaged executable but a UE5 project requiring Unreal Engine 5.4 or 5.5 and significant hardware to run smoothly. It serves as a glimpse into the next generation of game graphics, highlighting NVIDIA’s advancements in AI-driven rendering and real-time path tracing.