In 2006, AMD acquired ATI, combining GPU expertise with CPU know-how to create integrated solutions. Modern APUs like Van Gogh and Phoenix have made AMD competitive in the mobile PC gaming market, aiming to expand into high-performance compute and AI. The MI300A uses a massive chiplet configuration, offering 24 Zen 4 cores and 228 CDNA3 Compute Units. The large Infinity Fabric network supports communication within the system, delivering high latency cross-CCD transfers. The memory subsystem, while bandwidth-rich, presents latency challenges for Zen 4 cores, impacting CPU performance. Despite this, MI300A supports zero copy behavior for efficient CPU to GPU communication, showcasing impressive synchronization and atomic operations.
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