1st PC that my family had (bought by my parents) was the ColecoVision Adam: daisy wheel printer, cassette drive, OS was more similar to the Apple II's OS, & a cartridge slot for ColecoVision games. That was back when a local library had them available to check out.
2nd PC that my family had: IBM 486. Don't remember the exact stats, but I remember updating it with a video card so that it could handle 16-bit (!!) colors, & with the right boot disk it could access the full 4MB (!!!) to run X-Wing & TIE Fighter.
1st PC that I actually bought (back in '98): AMD K6 prebuilt from Best Buy. Can't remember all of its stats, but IIRC it had a 32GB HDD & a 300MHz K6 (which I later replaced with a 500MHz K6-2, good old Socket 7...). That one also started out on Windows 98.
2nd PC of mine: another AMD prebuilt (an eMachines, if you can believe it), IIRC it had the AMD Athlon XP 3200+ & Windows XP. I believe IIRC that it originally had 512MB of DDR RAM (as I'd heard that XP ran slow on only 256MB). Over time I upgraded the video card (that might have been the Radeon X1050 that it had at the end), ended up with 2 HDDs, & 1536MB of RAM.
3rd (& current) PC of mine: my first custom-built machine. Gigabyte GA-990FXA-UD3 motherboard, 8GB of DDR3 RAM, initially had two 1TB HDDs but later added a 250GB SSD as the primary (keeping the 2 HDDs for storage). GPU was originally the Radeon HD 6450 (cheap GPU since my wife doesn't game), which I first upgraded to the R9 270X & then later to the current R9 380. CPU was originally a Phenom II X4 980, & later was replaced by an FX-8320.