Re:Apple Silicon M1 Disruption
by jeffbee on Monday December 07, 2020 @02:33AM
(#25330097)
Intel's current generation CPUs have the same dual-channel LPDDR4X memory that Apple uses. Memory is not "on the same die" for either company because you don't make DRAM on the same process where you make CPUs.
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The grandparent used the wrong term. The memory isn't on the die, but it is in the package (MCM). I don't think that provides faster throughput, but it should help latency.
Regardless, the big win was giving unified access to that memory using a memory fabric. That lets the GPU (for instance) access graphics assets with no copying - it just uses them in place.
AMD can absolutely do the same thing, if it desires. Intel can too, but it has a hill to climb WRT GPU performance.
Apple's AI chiplet is another matter...