The design of AMD's Zen5 cores includes a 3D v-cache for improved performance.
The design of AMD's Zen5 cores includes a 3D v-cache for improved performance.
The 3D V-Cache and standard cache are storage areas inside the processor that help speed up data access. They’re not physical components like a die but parts of the chip’s architecture designed to improve performance. The big size isn’t necessarily inefficient—it’s meant to hold more data quickly, which can reduce waiting times for instructions and data. As for the IOD, it stands for Input/Output Die, which is a component that manages data transfer between the CPU and memory. It’s large because it handles high-volume data movement efficiently.
Zen 4 with 3D V-Cache isn't Zen 5—it's an upcoming architecture expected late this year at the latest. The 3D V-Cache is built on top of the core chiplet, which explains its name. The "V" means vertical, since it's stacked vertically onto the core die. Normally, L3 cache is placed between cores in a standard chiplet design. Additionally, the IO die is bigger for two main reasons: it holds an integrated GPU, requiring more space, and it uses a process node that makes transistors physically larger.