During last years an interesting option emerged – the company called Raptor Engineering promised to made the POWER8 workstation called Talos. They failed to allocate funds for that but they haven’t gave up and they have made the second try – the Talos II with the POWER9 CPU. And they have been successful.
The Talos II is real, available and powerfull (up to two 28-core POWER9 CPUs, some terabytes of RAM and so). It should be natural choice for me. But it is obviously expensive. Not only it costs about $6000 (thus about $8500 with VAT, custom fees and shipping to Europe – which is considerably more than the half-year salary of university teacher here) but it’s also too big for my needs.