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Are they going to bundle 8TB of RAM on the CPU now?

• AnthonyMouse 2y ago
  The trick Apple plays with their laptops is to use a wide memory bus, which would traditionally require a lot of memory slots (at least one per channel), which usually has a poor cost/benefit ratio on consumer systems that are usually not memory bandwidth bound. But Apple wants to use the same memory for the GPU, which needs more bandwidth, so instead they solder it as if this is necessary (rather than just cheaper). Servers normally have a lot of memory slots, e.g. Epyc servers have more memory bandwidth than the top end Apple Silicon entirely because the servers have tons of memory channels.
  • rasz 2y ago
    The "wide" bus you are speaking of is so far 128Bits for both M4 8GB and 16GB configurations, same stuff you get on ordinary PC laptops.
    • AnthonyMouse 2y ago
      But they also correspondingly don't have any higher memory bandwidth than an ordinary PC. Obviously the "server" chips are going to want more than that. (Apple still solder the memory on the base model laptops though.)