3DCenter.org has published an AMD Zen block diagram "with little speculation". The diagram was drawn up from a software patch published by an AMD Technical Staff member called Venkataramanan Kumar.

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Another block diagram of a more official nature leaked, this one holds the X570 chipset breakdown alongside the specs and Ryzen 3000. It's clear already that Ryzen 3000 CPUs (Matisse) and the X570 ...