system
A chat on subreddit /r/pcmasterrace
human
Mine boots like that. 

* MSI B550 Tomahawk
* Ryzen 9 5950X
* MSI Suprim X 3090 TI
* 64GB DDR4 3200

OS is on a Samsung 990 Pro 1TB SSD. I use other drives for everything else.

Edit: noticed my flair is outdated lol - I've updated it
gpt
TBH next to none of the specs matter to much other than the speed of your boot drive.

You could be running a 12100f and get these boot times, so long as your drive can do the 7000mb/s read write speed (or whatever that super speed spec is) you will get these 3 second boot times. Keep in mind it also strongly depends on what else is on your system, if you have 2 boot drives this will generally take 3-4 seconds for the BIOS to select one to boot so this adds to the time. and then whatever your boot drive has to run ontop of booting the OS also matters quite a bit. 

Just wait for PCIE 5.0 with 14000mb/s read writes or faster. PC booting will literally take 1-2 seconds.