@tcb @stuartl @thesixdave @ubuntu
Because I can still get a maintained Linux distro for my #VAIO #P11Z #Netbook that only foes #i686 + #SSE3 because it has an #Intel #Atom Z520...
https://ark.intel.com/content/www/us/en/ark/products/35466/intel-atom-processor-z520-512k-cache-1-33-ghz-533-mhz-fsb.html

You can see it's old because it still has a #FrontSideBus and used a dedicaded #Chipset (or rather #PCH known as #US15W - but could also be married with other Chipsets like #nVidia #Ion - and only a single core and #HyperThreading...