a 2011 laptop will likely perform the same on this metric with a contemporary website. (a 2011 website with a 2011 laptop, and a 2026 laptop with a 2026 website).
“how long it takes to load the mail app and send a mail”
probably the 2011 laptop out performs on this metric.
I’m sure the modern laptop is a few times more powerful in terms of raw compute, but lets not confuse compute with utility, because better laptops should mean more capabilities, not more shitty developer harnesses to make the same programs we had before.
Graphics processing is beat by any new laptop or even a phone, but good old processing power can load a web site in the same time.
One common thing I've experienced is browser-based video conferencing. A lot of chips in that generation didn't really have a lot of hardware accelerated video codecs, so a number of things have to rely on pure software and thus really crank the CPU. Meanwhile a cheap modern mobile chip can handle those same video streams without even breaking a sweat, due to having accelerators for those video codecs.
I know it's all "back in my day" but back in my day (15 years ago) everything was generally software so the laptop was computing more, now everything is a website but the laptops need 32GB to not run like through tar.
Both of my arm MacBook pros hang from time to time doing basic tasks. It's ridiculous and at least one nice side effect of a ram shortage might be developers starting to care about memory footprint again
Anytime I look in Task Manager "Anti-malware Service Executable" is pegging at least one CPU core.