The first computer I remember using was my dad's IBM Aptiva (I'd have to look up the model number), which he bought in 1997. It has an 166 MHz Intel Pentium with MMX, 32 MB of RAM, an approximately 3 GB HDD, and a copy of Windows 95. By the time we bought our first laptop, the Aptiva was relegated to a gaming computer. My dad has many old MS-DOS and Windows 95 games, including Age of Empires. We haven't tried to boot it in over 5 years, so we don't know if it still works.
2006 HP desktop
When we finally got high-speed Internet service in the summer of 2006, we bought an HP Pavilion a1540n desktop to complement our laptop. It had a 2.2 GHz AMD Athlon 64 X2 4200+ CPU (64 kB / 512 kB L1/L2 cache), 2 GB of RAM, a 250 GB HDD, and a 32-bit version of Windows XP Media Center Edition. Unfortunately, in April 2009, the PSU and mobo melted while I was taking an exam.
2009 HP desktop
In October 2009, after borrowing my mom's laptop since the previous desktop died, I acquired a new HP Pavilion p6240 desktop, which has been my primary computer since then. It has an Intel Core 2 Quad Q8300 CPU (no VT-x, unfortunately), 8 GB of DDR3 RAM, a 750 GB HDD, a 300 W PSU, and no useful GPU. It came with Windows 7, but it has run various versions of Kubuntu since I first got the computer. I have run many servers on it, including this one, and it has been a workhorse since I got it.
Old HP laptop
2014 HP laptop
Today, my other primary computer is a 2014 HP Pavilion 13-r010dx laptop. It has an Intel Core i3-4012Y CPU, 4 GB of DDR3 RAM, a 500 GB HDD, and a detachable tablet form. Its hardware is generally buggy (the trackpad is awful, and the touchscreen is worse). It came with Windows 8.1, and I upgraded it to Windows 10 when that was released, as I hated Windows 8. In September 2019, Windows was rendered unable to boot due to a HDD issue, so I wiped it and replaced it with the Kubuntu LTS release (18.04 at the time).
My brother's old HP laptop
My brother received his second laptop around 2013. It was an HP Split 13-g210dx, with an Intel Core i5-4202Y, 4 GB of DDR3 RAM, a 128 GB SSD, and Windows 8.1. He never upgraded it to Windows 10, so it still has Windows 8.1. It has suffered from physical damage, to the point that it no longer stays fully open. Also, its SSD has been taken over by his Internet Explorer junk, so it's out of room. He has received a new HP laptop to replace it, and I will take over this one for LLR.