AMD Radeon Vega 7/8 (Ryzen 5000 mobile APU, dual-channel DDR4-3200, 64GB)

Keyed by chip class plus memory configuration, matching ryzen-ai-max-395-128gb and radeon-780m-ddr5-5600. Covers the Zen 3 mobile APUs -- Cezanne and Lucienne, Ryzen 5 5600H through Ryzen 7 5800HS -- carrying a Radeon Vega 7 or Vega 8 iGPU on dual-channel DDR4-3200. 51.2 GB/s is arithmetic from that memory: 3200 MT/s across a 128-bit dual-channel bus, never inferred from a measurement. The Vega 7 and Vega 8 differ by one compute unit, which is a real difference and is why this entry is worth questioning -- but at this bandwidth both parts are memory-starved rather than compute-starved, and the two authors behind its benchmark record agree to 1.7% on PREFILL, the metric a CU difference would show up in first. That is the empirical case for one entry rather than two. TDP is recorded as 35W because both authors state a 35W package cap; these chips are specified 35-54W and a machine at the top of that range may prompt-process faster. This is the dataset's LOWEST-bandwidth APU by a wide margin -- the others are 89.6 and 256 GB/s -- which is the point of carrying it. Memory capacity is in the id because it decides which models fit; these APUs commonly ship at 16-64GB and the record's authors ran 64.