I wonder what those who complain about the X5000 being 'slow' actually want to do with the machine?
The power of the average PC/CPU is generally wasted nowadays. Unless you're a hardcore gamer or into 3D modelling/rendering - most CPUs are overkill - and even in these examples many tasks are offloaded to the GPU nowadays or in the case of rendering, offloaded to render farms in AWS.
I'm confident the X5000 would make a perfectly usable desktop machine, using AmigaOS for fun and Linux for productivity. For the cost you get a perfectly good CPU for desktop use and the ability to dual boot. I'm still perfectly happy with my 5 year old AMD box, I'm guessing performance wouldn't be dissimilar?
I'm guessing the Tabor board will also be great for most most desktop tasks.
Steve
