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by deepskier 35 days ago
ARL is the relevant comparison point. LNL was specifically designed and targeted for low power. It's not just the node but the design that is relevant. Even for single core perf, the design dictates which other parts of the chip can be turned off. LNL was optimized there at the expense of total performance. PTL has 1.7x-2x multi core performance vs LNL. These are apples and oranges.
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When a new node is introduced, it will usually say something like "+15% at ISO power" or "-30% at ISO performance".

The fact that Panther Lake could not beat LNL on ST perf/watt is telling of the node.

PTL most likely derived its design on LNL. Overall, Arrow Lake was a complete disaster of a design. PTL was a better high performance design for sure and uses different core config for MT.