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by K0balt 1926 days ago
On die memory and storage. No bottlenecks, very little latency.
1 comments

Important to clarify this every time it comes up: there is no on-die memory on the M1. It is normal, everyday, DDR4 memory which is located near to the processor. It's actually quite high latency at ~100ns.
Indeed and I was quite surprised by this as it's actually higher latency than you'd get on AMD or Intel's chips.