Having glanced at recent hw prices - for a desktop/workstation I'd say a reasonable baseline for new equipment for professional use would be 128gb ram, 1tb ssd and maybe a 10 tb 3.5 inch HD, if more space is needed (or a smaller drive, but the recent seagate offering looks pretty good value - even if you pay the customary ~2x/gb price [ed: for getting the largest capacity/newest drive on market] compared to a ~4tb drive):

http://www.techradar.com/reviews/pc-mac/pc-components/storag...