RDNA (Radeon DNA) is a graphics processing unit (GPU) microarchitecture and accompanying instruction set architecture developed by AMD. It is the successor to their Graphics Core Next (GCN) microarchitecture/instruction set. The first product lineup featuring RDNA was the Radeon RX 5000 series of video cards, launched on July 7, 2019. The architecture is also used in mobile products. It is manufactured and fabricated with TSMC's N7 FinFET graphics chips used in the Navi series of AMD Radeon graphics cards. The second iteration of RDNA was first featured in the PlayStation 5 and Xbox Series X/S consoles. Both consoles utilize a custom RDNA 2-based graphics solution as the basis for their GPU microarchitecture. On PC, RDNA 2 is featured in the Radeon RX 6000 series of video cards, which first launched in November 2020. RDNA 2 is also featured in Samsung's Exynos 2200 as the graphics architecture. The third iteration of RDNA was announced on November 3, 2022, and is set to be featured in the Radeon RX 7000 series of consumer desktop and mobile graphics cards. RDNA 1 RDNA 1 (also RDNA1) is the first implementation of the RDNA microarchitecture and is the successor to the Radeon RX Vega series. The launch occurred on July 7, 2019. Architecture The architecture features a new processor design, although the first details released at AMD's Computex keynote hints at aspects from the previous Graphics Core Next (GCN) architecture being present for backwards compatibility purposes, which is especially important for its use (in the form of RDNA 2) in the major ninth generation game consoles (the Xbox Series X/S and PlayStation 5) to preserve native compatibility with their pre-existing eighth generation game libraries designed for GCN. It features multi-level cache hierarchy and an improved rendering pipeline, with support for GDDR6 memory. Starting with the architecture itself, one of the biggest changes for RDNA is the width of a wavefront, the fundamental group of work. GCN in all of its iterations was 64 threads wide, meaning 64 threads were bundled together into a single wavefront for execution. RDNA drops this to a native 32 threads wide. At the same time, AMD has expanded the width of their SIMDs from 16 slots to 32 (aka SIMD32), meaning the size of a wavefront now matches the SIMD size. RDNA also introduces working primitive shaders. While the feature was present in the hardware of the Vega architecture, it