Hardware leaker Gotou_3rd revealed that AMD's next-generation Siren Halo APU, targeting the high-end market, may feature both discrete GDDR7 VRAM and LPDDR system memory, no longer relying entirely on unified memory. LPDDR is reportedly retained, but there is no确切 news regarding the capacity, bus width, and connection methods of the two memory pools.
It is also currently uncertain whether the GPU can efficiently access LPDDR. If Siren Halo adopts discrete GDDR7, the GPU is expected to achieve higher memory bandwidth, thereby improving gaming performance; however, if the GPU's efficiency in utilizing LPDDR is limited, resource scheduling for local AI workloads may become more complex.
For reference, the existing Ryzen AI Max+ 495 (Gorgon Halo) supports up to 192GB of unified memory, with up to 160GB configurable as graphics memory. Such large-capacity configurations are suitable for running large language models locally that prioritize memory capacity, although related devices cost around $7,000.
Lucebox already employs a hybrid LPDDR and GDDR configuration with dynamic resource allocation, but this case does not prove that AMD will choose the same solution for Siren Halo. On the software side, a Linux driver patch submitted by AMD in September 2026 has added GDDR7 to the memory types recognizable by the GPU driver, indicating that support is being laid out, but this is insufficient to confirm the final specifications of Siren Halo.
Regarding the product roadmap, leaks suggest that Siren Halo will succeed Medusa Halo, while Siren Point is essentially a refreshed version of Medusa. Previous rumors had linked Medusa Halo with Zen 6 CPU cores, RDNA 5 graphics architecture, and LPDDR6 memory.
Gotou_3rd also mentioned that Siren Halo might be related to the Magnus chip, which was previously associated with the next-generation Xbox, but emphasized that he has no confirmed information. Microsoft has already confirmed that the Project Helix console will use a custom AMD SoC, but its memory configuration has not yet been announced.