What notebook?
There hasn't been a single laptop/notebook presented which can actually match desktop.
Clevo type machines are stone sleds and already their AC adapters weight same as real laptop/notebook.
And if huge bulk and weight are discarded, they're barely more usable without wall socket than those luggable computers of early PC era.
The same disadvantages remain as with nearly all Eurocom notebooks we've tested. The very dense performance profile entails loud fan noise (54 dB(A)), very warm core temperatures (>85 C), heavy weight (5.6 kg), and a short battery life that may as well be measured in minutes.
Liquid metal does nothing to laws of the physics and the need to dissipate that heat into air.
They aren't even automatically that much better:
https://www.tomshardware.com/reviews/thermal-paste-comparison,5108-9.html
And that physics tells those desktop replacement "laptops" are highly unlikely to be as durable as desktop PCs with pretty much everything running hot inside those cramped covers.
Neither undervolting or overclocking change anything.
Just like proliferation of heatpipes changes nothing, because they've been utilized even more in desktop PCs to heavily increase cooling performance, while keeping noise under control.
Everything that can be used to tweak performance in "laptops" can be done more than equally well in desktop PCs.
Only thing which has changed since 2003 is amount of marketing BS around computers having increased by magnitudes.
Since PCs turned from machines of more or less knowledgeable enthusiasts and hobbyers to commodity toys of everyone and their pet dogs getting their education from butt end of marketing,
Just like what one company hyping "liquid metal coolers" once tried to utilize.
Before ending to quietly disappearing after (not so much marketed) failure to even match cheaper high end heatpipe coolers in cooling per noise.