<p>➀ AMD presented its RDNA 4 GPU architecture at Hot Chips 2025, highlighting enhancements in raytracing, AI/ML capabilities, and media/display engines, with a focus on future gaming workloads; </p><p>➁ Raytracing performance doubled through BVH throughput improvements, hardware instance transformation, and oriented bounding boxes, achieving ~2x gains over RDNA 3; </p><p>➂ New features include dynamic register allocation for efficient resource use, AV1 B-frame encoding, FP8 support for AI workloads, and modular SoC design for flexible GPU configurations.</p>