I guess the graphics card itself 10g, battery 35g, heatpipe and second fan 45g.
Alternatively graphic card 20g, battery 70g???
As the overall battery weighs 330g for 80wH it I am correct, the 90wh should be around 360-365g. So solution 2 seems unlikely. Or am I wrong on the weight of a mobile graphic card? And both models have the new dual heatpipe? At least the old LG gram 16 usually was 1150g so there are 40g increase for the new model without GPU..
Could be some in between solution, Like both have two heatpipes nie, but GPU Version geht's a Second Fan too. I guess second heatpipe is half the game. Two heatpipes are desperately needed. Two fans. Not soo much as they are besides each other. Would be different with two locations. So far all other laptops tested where H models with 100w cooling or more. They managed up to twice the results on benchmarks. I'm sure P series can be much faster with stronger cooling plus upping the temperature limit to 100 instead of 90. 26-90 is only 64 degree Delta vs the usual 80 (20-100) of laptops tested. That's why there is 10-20 percent higher benchmarks possible for the gram, but for sure other P series will be faster and using more power/battery. That's fine. 35-40w cooling is enough for a huge difference Vs older LG Gram at only tiny weight penalty.
It's clear the alder lake P28 needs a bit more performant cooling else the power increase will be much less (maybe 30 percent). Remember 28w should be the base power, and the old cooling solution only managed 22-24w depending on room temperature. So for putting the P series I really want 30-35w cooling capacity (even though I assume the P series will be more efficient than I above 10-15w, while less efficient below, from 30-35w or above the H series will be more efficient due to having more cores)