In just a few days, Portal RTX launches as free DLC, giving the beloved Valve FPS a fresh coat of ray tracing paint. You’ll need a powerful pixel pusher in order to get it looking and running at its best, but it seems the new graphics features can bring the very best GPU to its knees. Even the mighty Nvidia GeForce RTX 4090 can struggle to run the game at max settings without the aid of DLSS.
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