Hi Mathias,
A good machine as far as I'm concerned is one that does what it is setup to do without problems. So your box is a little old but it did the job very successfully apparently. I have an Acer Aspire T180 from wayback that was my main home OS/2 machine until the end of last year when my home built Ryzen box took over.
I see that Intel are having more problems with their processors again - hyperthreading this time, so I'm happy to have all AMD based machines.
https://www.theregister.co.uk/2019/05/14/intel_sidechannel_vulnerability/Yes, the VIA USB 2 cards are now a 'hunt for on ebay' item and some of the USB 2 cards, while providing USB 2 are actually based on USB 3.0 chipsets. Hopefully the USB 3.0 for OS/2 and ArcaOS will arrive soon as we were told about it 2 years ago.
Memory for the Ryzen appears to be 64GB although I only have my boxes fitted with 8 GB.