Hello Fred,
[I've split your new post off from the original forum topic, since it's a separate question.]
In case it helps:
We have some broad general guidelines on computer hardware in these documents (linked from the 'Support | Requirements' section of the website):
https://www.hauptwerk.com/clientuploads/documentation/PDF/HauptwerkBackgroundTechnicalInfoOnComputerHardware.pdf
https://www.hauptwerk.com/clientuploads/documentation/PDF/HauptwerkPrerequisites.pdf
(The current versions of Windows 10 and macOS are also supported, which aren't yet listed in those documents.)
Francois Ratte in Canada also provides detailed one-to-one computer advice for Hauptwerk users, on a consultancy basis: http://www.hauptwerkconsultant.com/