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Portal with RTX

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Portal with RTX Portal with RTX is a unofficial remastered version of Portal developed by Nvidia Lightspeed Studios, which takes advantage of newer hardware and adds ray tracing, DLSS, PBR textures, new high-poly models and much more, while also demonstrating RTX Remix RTX Remix technology on various game engines such as Source Source, allowing users to add ray-tracing, and other shaders, modern rendering features to any supported DX8-DX9 games.

It was released for free on December 8, 2022, for anyone who owns Portal on Steam. The game was developed using the RTX Remix RTX Remix tools, and runs on Vulkan hooked on top of DirectX 7 feature level[1].

It is only optimized for system with Nvidia GeForce RTX graphic cards. Users with AMD graphics card (including Steam Deck Steam Deck, which uses Wikipedia icon AMD RDNA 2 like most 9th gen consoles) or Intel graphics card may suffer from performance issues, when trying to run this game even with high-end card.

Portal RTX received mixed reviews at launch due to various reasons like the performance issues affecting some NVIDIA cards (and unplayable on systems with AMD Radeon), and the art-style & lighting seems out of place (which itself was based off Portal 2 instead of Portal 1 which looked more dirty).

Via Portal with RTX you can use RTX remix with Half-Life 2 and some other games by loading the map files, a tutorial can be found here. However, this method is highly buggy (as is running Half-Life 2 on Portal regularly), and lacks PBR textures.

System Requirements

Last updated: June 20, 2023

Minimum: Recommended: Ultra (optional):
  • Processor: Same as Minimum
  • Graphics: NVIDIA GeForce RTX 3080
  • Memory: 16 GB RAM
  • Storage: 25 GB or more, SSD
  • Windows Windows: Same as Minimum
  • macOS Mac: N/A
  • Linux Linux: N/A
  • Other: N/A
  • Processor: Intel Core i7-12700K, AMD Ryzen 9 5900
  • Graphics: NVIDIA GeForce RTX 4080 or higher
  • Memory: 32 GB RAM
  • Storage: 25 GB or more, SSD
  • Windows Windows: Same as Minimum/Recommended
  • macOS Mac: N/A
  • Linux Linux: N/A
  • Other: N/A
Note.pngNote:This game is not optimized for systems with Radeon AMD or Intel graphics cards, which means that Portal with RTX will usually perform worse when not using a Nvidia Nvidia GPU.
System requirements may change over time depending how updates affect them.


1. Pinsplash (Dec 30, 2022). "A Non-Hyped Take on Portal RTX - 3 way Comparison and Review. YouTube logo YouTube.
According to Video - Advanced window shown on that video, the game appears to run on DX7 feature level, despite it was deprecated since Source 2009 Source 2009 or Source 2013 Source 2013 (which would have force it to DX8 mode). Retrieved January 9, 2024.