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That latter aspect is not relevant because you'll have different microarchitectu...

 3 years ago
source link: https://twitter.com/andreif7/status/1419998558036627463
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Intel confirmed the figures were at ISO power, it's just perf increases.
Thanks for clarifying.

Wait: It's not just performance increase and above statements were still correct if that ISO-power is not calculated at highest applicable frequency (of prior node). Power/frequency is not linear as you know.🤔

Did AT ask for details after that ISO-power comment?

It is just performance.

They didn't tell details. The difference between Fmax and Fmax+1 and FvNom and Farb+1 shouldn't be large so it doesn't strictly matter.

Fmax and Fmax+1 have to have a large difference of "10-15%" or "20%" or "18%" for it to be just performance.
I'm not quite getting your point. It's just a comparison like TSMC does on the horizontal axis. It doesn't matter too much where on the curve that happens.
Image

ok let met take a break form work:

1. My calculations are obviously wrong if it's at iso-power. Intel numbers can't be compared to TSMC/SS cause it's about the horizontal line as you said.

2. It matter a lot where on the curve. Draw horizontal lines N5 vs N3 top vs bottom.

3. For "just performance" comparisons and not perf/w you need to look at the very top. Can N5 in your graph even reach the power per transistor of N7? Can Intel 4 vs Intel 7?
Replying to
That latter aspect is not relevant because you'll have different microarchitectures be designed around the available peak perf, just add more transistors. They didn't specify where the point is, but either Vnom or Fmax are both fair comparison points.
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