after investing 6 months ago in an MSI GTX 980-Ti, i think i may be better off adding a second MSI 980Ti in SLI mode, my MSI motherboard is an SLI board.......selling my GTX980Ti and replacing with a GTX1080 seems like a false economy, i dont overlock as i dont have the tech skills in this field or indeed the extra cooling to support, however i suspect by going SLI i need an improved PSU from my 650 corsair and some extra push and pull fans, any advice Linus fans ?