I can't remember all the details, but it was 1998 and it was a Gateway PC with a Pentium type of processor running at around 500 MHz. I knew so little about computers that I was shocked that my first flight sim would not run properly because I didn't have a good enough GPU in it. And thus began the never-ending story of upgrading.

Heh, your specs were very close to mine and you bought your POS Packard Bell the same year I did!

ZX80 in 1980 modified so it had white txt on black screen rather than the black on white.
Commodore 64 with disk drive
then BBC B and the cassette tape was faster than the disk drive on the commodore 64.
At college I was working with a mixture of AIM 65s and a Cromenco System 3 with 8" floppy disks and at night school it was BBC Micros in a network.
Then the Commodore Amiga 500
at that point I built my first PC a 286 with a 50MB HDD
Then a 386SX with a 387 co-processor and that takes me up to about 1992
I went AMD for a while with the first Athlon 64 in 2003 and I have used a 64 bit operating system ever since

Now I am using an Intel i7 965 which was the highest spec CPU I could get 10 years ago, it has been showing it's age for a while especially with it's 24GB memory limit and the motherboard's lack of support for dual GPU cards but it still runs most of what I throw at it, the motherboard can be flaky and the power button circuit no longer works so I have to use the power button that is built into the MB

IBM XT 8088 clone circa 1985/6? Had twin 5 1/4 slots for the A and B drives.
Main thing I remember about it is that it took forever to run payroll for our 15 employees.


Wheels

Now I had a Xerox Kurzweil 68000 daughter board for my 386 PC, it was designed to read and translate scanned documents and also speak them out loud.

I was doing volunteer work for a government sponsored scheme to help people with disabilities use computers and IT, it was called LEAD, Linking Education And Disability.

The 68000 daughter board and software was donated by the local nuclear power station to another scheme that helped the unemployed train/re-train for work. The people on that scheme, well lets say some were not the shiniest tool in the box and one person had wiped the HDD with the software and drivers for the 68000 board so he could get more games on it. Luckily I got there in time before the data I needed had been over written and I managed to pull most of it back off the HDD and with a bit of cap in hand managed to get the missing bits of software from Xerox. Finding all the parts of that system which had gone to the "Job Creation Scheme" was a right nightmare as they had split it up and were using it as an ordinary scanner.

So at one time my 80386sx had a 68000 co-processor

I think we got it at Circuit City, in Shelby, NC.

A 286 in 1986 that cost ~$7000.