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Comment by bryanlarsen | Hacker News Reader

Intel is claiming that Panther lake has 30% better battery life than Lunar Lake.

Perhaps in a vacuum…

On package memory is claimed to be a 40% reduction in power consumption. To beat actual LL by 30%, it means the PL chip must actually be ~58% more efficient in an apples-to-apples non-SoC configuration.

Possible if they doped PL’s silicon with magic pixie dust.

> On package memory is claimed to be a 40% reduction in power consumption.

40% reduction in what power consumption? I don't think memory is usually responsible for even 40% of the total SoC + memory power, and bringing memory on-package doesn't make it consume negative power.

Lunar Lake had a 40% reduction in PHY power use by using memory directly onto the processor packaging (MoP)...roughly going from 3-4 Watts to 2 Watts...

Do you have more information on that? I have a meteor lake laptop (pre-Lunar Lake) and the entire machine averages ~4W most of the time, including screen, wifi, storage and everything else. So, I dont see how the CPU memory controller can use 3-4W unless it is for irrelevantly brief periods of time.

That's peak usage. I don't know how reduced the PHY power usage is when there aren't any memory accesses. For comparison, the peak wattage of Meteor Lake is something like 30-60 Watts.

https://www.phoronix.com/review/intel-whiskeylake-meteorlake...

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