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JEMC said:

haxxiy said:

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.

Thanks.

The clocks appear to be lower than Zen4 EPYC, Genoa, maybe because of the higger density, so that will also play a role in the likely worse single core performance of these chips.

I doubt AMD will bring something like this to dektop CPUs, other than as an equivalent of Intel's efficient cores, but we'll see.

I think remembering that this will come with Zen 5. In the meantime, the next Athlons will come with a mix of Zen 4 and Zen 4c cores (2p/4c cores afaik). Considering all previous Athlons have been dualcores or quadcores without HT only, that's a pretty big jump in number of threads.