ThinkPads are, ostensibly, my introduction to computing. I started really using computers with a ThinkPad T42p, which I no longer own. That really jumpstarted my interest in computing and, to this day, when looking for a PC to take care of a task, I oftentimes look first to a ThinkPad to do the job.
ThinkPad X61s - "Mugi"
Year: 2007
CPU: Intel Core2 Duo L7700 @ 1.83GHz
RAM: 4GB
Graphics: Intel GMA X3100
Hard Drive: 256GB SATA SSD
OS: Windows 7, Fedora XFCE
ThinkPad X40 - "Ayu"
Year: 2004
CPU: Intel Pentium M LV 718 @ 1.2GHz
RAM: 1GB
Graphics: Intel Extreme Graphics
Hard Drive: 40GB ATA HDD, 60GB ATA HDD
OS: OpenBSD 7.6
ThinkPad P53 - "Ame"
Year: 2019
CPU: Intel Core i7-9750H @ 2.6GHz
RAM: 32GB
Graphics: nVidia Quadro T2000
Hard Drive: 2x512GB M.2 SSDs, 1TB SATA SSD
OS: Windows 11, Fedora
ThinkPad T530 - "Nadeshiko" (Departed)
Year: 2012
CPU: Intel Core i5-3320M @ 3.3GHz
RAM: 12GB
Graphics: Intel 3rd Generation Integrated Graphics
Hard Drive: 512GB SATA SSD
ThinkPad T410 - "Rin" (Departed)
Year: 2010
CPU: Intel Core i5-540M @ 2.53GHz
RAM: 8GB
Graphics: nVidia Quadro NVS 3100
Hard Drive: 120GB SATA SSD
ThinkPad T42p - "Serena"
Year: 2004
CPU: Intel Pentium M 745 @ 1.8GHz
RAM: 2GB
Graphics: ATI Mobility FireGL 2
Hard Drive: 120GB mSATA SSD, 100GB ATA HDD
OS: Windows 7, Slackware Linux
ThinkPad 760ELD - "Nitori"
Year: 2004
CPU: Intel Pentium @ 100MHz
RAM: 16MB
Graphics: Trident Cyber9320
Hard Drive: 810MB ATA HDD
OS: MS-DOS 6.22, Windows for Workgroups 3.11
ThinkPad X250 - "Edelgard" (Departed)
Year: 2014
CPU: Intel Core i5-5200U @ 2.2GHz
RAM: 8GB
Graphics: Intel GMA X3100
Hard Drive: 120GB SATA SSD, 16GB PCIe SSD
IBM PS/ValuePoint 466DX2/Si - "Yutaka"
Year: 1993
CPU: Intel 486DX2 @ 66MHz
RAM: 12MB
Graphics: Tseng Labs ET4000/W32
Hard Drive: 212MB ATA HDD
OS: MS-DOS 6.22, Windows for Workgroups 3.11
Mugi is the computer that's been in my collection the longest, being my daily driver machine from 2011 all the way to 2018, when I switched to a MacBook (Akari). I was given the opportunity to re-acquire a T42p, on which I installed Windows 7 like the one I had originally ran.
The IBM PS/ValuePoint is my first pre-Pentium machine, and I took the opportunity to install an old version of Unix (Interactive UNIX 4.1, which is based on System V/386 Revision 3.2) on it. I have yet to do much with it given I don't presently have a complete set of compilation tools (as and ld are missing), but I do want to see just what it is capable of, and it might be interesting to compare to my SPARCstation 5, which is of a similar clock speed and vintage, albeit of a different architecture and running SVR4 instead of SVR3.2). Since then, I elected to instead install Windows for Workgroups 3.11 on it, as I feel like it is better suited to being a "commodity" machine that is used to communicate with more specialized systems, rather than a specialized system itself.