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GIFtheory
on March 22, 2022
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Nvidia Grace CPU
Interesting that this has 7x the cores of a M1 Ultra, but only 25% more memory bandwidth. Those will be some thirsty cores!
ZetaZero
on March 22, 2022
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M1 Ultra bandwidth is for CPU and GPU (800GB/s). Grace is just the CPU. Hopper, the GPU, has it's own memory and bandwidth (3 TB/sec).
my123
on March 22, 2022
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https://twitter.com/benbajarin/status/1506296302971334664?s=...
396MB of on-chip cache… (198MB per die)
That’s a significant part of it too.
wmf
on March 22, 2022
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The M1 memory bandwidth is mostly for the GPU but Grace does not include an (on-chip) GPU.
Teknoman117
on March 22, 2022
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The CPU complex on the M1 series doesn't have anything close to the full bandwidth to memory that the SoC has (like, half). The only thing that can drive the full bandwidth is the GPU.
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