AMD Radeon “GFX13+” Target Found in Code Update; Linked to UDNA/RDNA 5 Architecture

Closer to the start of 2025, Kepler L2 shared “PlayStation 6” inside track info. The venerable leaker—of mostly AMD behind-the-scenes details—theorized that Sony’s sixth-gen home console was based around an early fork that branched off from a mysterious “GFX13” GPU architecture. Earlier today, this target identifier has appeared again. Kepler L2’s latest investigations have pulled the “GFX13+” target from kernel-level codebase updates. Data miners have often pulled compelling pre-release tidbits from official repositories; AMD’s software engineering team open-source developments are quite visible. Over a year ago, similar detective work connected the “GFX12” IP to RDNA 4—nowadays, better known as the Radeon RX 9000 graphics card family. Despite Team Red’s official insistence that RDNA 4 was a priority on desktop platforms, supposed discrete mobile variants were leaked last month. In addition, RDNA 3.5 seems to be a mainstay for at least another generation of integrated graphics solutions.

Looking beyond these current-gen graphics architectures, AMD leadership has already previewed a “unified” path forward. Last September’s announcement revealed the convergence of RDNA (gaming) and CDNA (enterprise) GPU technologies: dubbed “UDNA.” Present day leaks do mention a far out “RDNA 5” line (also “Navi 5x”), but in the same sentence as “UDNA.” Kepler L2 commented on the (screen captured) presence of “ENABLE_WAVEFRONT” and “ENABLE_WAVEGROUP” kernel code properties: “I think it’s related to SWC (Streaming Wave Coalescer/pseudo out-of-order execution). Each SIMD takes multiple wave32/wave64 (a wavegroup) as inputs and reorders the work items of each wave to reduce execution divergence.” Fresh rumors suggest the distant RDNA 5/UDNA avenue being good enough to expand into higher-end gaming card territories. So far, RDNA 4 has hit a ceiling with Navi 48 GPU-powered Radeon 9070 XT offerings.