Hi I am currently struggling with deciding between Pis (all variants e.g. Orange Pi) and Nucs as I can’t find any for a reasonable price. Do you guys have any recommandation for me? German/European Stores maybe? I am looking for the best efficency to performance ratio for a low price. Basically just small computing units that I can cluster ideally in a 1U Rackmount.
Go on ebay and look at used at used USSF, 1 liter PCs (see https://www.servethehome.com/introducing-project-tinyminimicro-home-lab-revolution/).
Depending on what you need to do, thin clients may also be a great fit.