I am using RankerX. Scrapebox on Win Server 2012 R2. It's faster and always work effectively.I'm about to get a VPS with 2-4 GB Ram, I will be running SEO tools like RankerX and GSA on it.
But I'm not sure what OS to install, Win Server 2008 R2 or Win Server 2012 R2
(Is one of them faster, more stable, less resource heavy.)