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haxxiy said:

JEMC said:

I'd love to see how those "dense" cores compare to the regular ones, because to be able to pack twice the cores at the same space (more or less), you have to give up on something.

Probably not an awful lot (for most instructions). The size of 4c isn't that different from Zen 2/3, except that it's made on a smaller node.

It just goes on to show how relatively expensive single-core performance is, in terms of transistor count vs. IPC increase. It wasn't much of a bother before with cost-effective die shrinks, but now it is.

It doesn't help that chiplets also make Zen less efficient (Which is a scary thought.) so it needs to dump more transistors in pushing those IPC gains home.

But you are right, these days we spend far more transistors for a 1% gain in IPC than we did a decade ago, the low-hanging fruit have been picked.