What's the real-world battery life though? My mac gets 8 hours real world; 16 in benchmarks; 24 claimed by apple.
Assuming the xps has the same size battery, and this really reduces power consumption by 48%, I'd expect 16 hours real world, 32 in benchmarks and 48 in some workload Dell can cherry pick.
Dell has to deal with windows cuts that in half with all the slop and spyware.
Both my last two XPSes have had shit battery life. Maybe 3.5h when new and only 2h after a few months of use. They also experience a lot of thermal throttling (i7 12700h, 9750h) and newer updates have removed the option of undervolting which used to fix that.
Positive is that the battery life couldn't possibly get worse with newer ones.