Well hell, I’ve had it running one at least one PC since 1999. Sometimes multiple computers at home and work, until companies really started cracking down on their firewalls. (It’s hard to get a site white-listed without reason nowadays. Listening for little green men usually doesn’t pass muster, even if you’re in IT, was well.) Currently I run it on a quad-core Acer laptop and - wait for it - a Dell Latitude Pentium III C610 running XP SP3 with 512 MB of RAM and a 40 GB hard drive. LOL SETI@home was one of the main reasons why I’ve kept that tin lizzy running for almost 20 years. It’ll be good for nothing else but Fuji Golf and a few 32 bit screensavers and games now. But, it’s like an old pair of jeans in the closet with holes in the pockets and paint stains on them - you know you should get rid of them, but you just can’t bring yourself to part with them. Looks like it’s time to download copies of my certs and stats, then find some good abandonware to install. Might still be robust enough to play Wolfenstein 3D on.
My oldest is a KVM’d Athlon 1200 mobo. I think the BIOS says 2003.
It did its share of SETI at one time.
I run AOE II, a couple of other games, and use it to mostly peruse USENET.
Oh, and Word 97 for printing envelopes and labels.
I have a 20 yo Brother laser printer shared off of it.