Portal Prelude RTX

Portal Prelude RTX is the first game using NVIDIA RTXIO


NVIDIA has released Portal: Prelude RTX, a community remaster of this classic Portal mod, created with NVIDIA RTX Remix and featuring full ray tracing, NVIDIA DLSS 3, NVIDIA Reflex and NVIDIA RTXIO.

According to the green team, Portal Prelude is the first game that takes advantage of RTXIO. It’s also the first remaster created entirely by modders with the RTX Remix creator toolkit.

To bring Portal: Prelude RTX to life, NVIDIA collaborated with Nicolas “NykO18” Grevet, the original creator of Portal Prelude, and famous modder David “Kralich” Driver-Gomm to modernize Portal: Prelude’s assets and relight the game with stunning full ray tracing, also known as path tracing.

Similar to Portal RTX, Portal: Prelude RTX features cutting-edge graphics technologies. Within eight months, the mod team upgraded every frame with stunning full ray tracing, new, hand-crafted hi-res physically-based textures. Additionally, the team implemented new, enhanced high-poly models evocative of the originals.

Now as you may have guessed, Portal Prelude RTX supports NVIDIA DLSS 3, NVIDIA Reflex, and NVIDIA RTX IO. NVIDIA claims that DLSS 3 results in a performance upgrade of 5X on average at 4K with max settings. This basically means that GeForce RTX 4080 and 4090 users can expect 80 FPS+.

On the other hand, NVIDIA RTXIO delivers 5X faster texture load times in Portal: Prelude RTX. Not only that but thanks to RTX IO, the game utilizes 44% less disk space. NVIDIA RTX IO enables rapid GPU-based loading and asset decompression with optimizations through NVIDIA’s Game Ready Driver for both the DirectX and Vulkan APIs.

Portal: Prelude RTX | RTX IO Off vs On Comparison – Cake Scene

RTX IO is based on GDeflate, an open GPU compression standard contributed by NVIDIA, which is utilized by both Microsoft’s DirectStorage and new Vulkan Extensions. Portal: Prelude RTX leverages the new Vulkan Extensions.

Portal Prelude RTX will be available for download Steam later today. This game will be free to all owners of the Portal game. Until then, you can go ahead and watch its gameplay trailer.

Have fun!

Portal: Prelude RTX | A Stunning Fully Ray-Traced Remaster of the Iconic Portal Mod