I think you'll want something that plays well with Silent Hunter V instead

. You'd have to go to some trouble to find a card that would not be good enough for SH3 as it's almost five years old.
If it's really only SH3 you care about, grab any mid-range card and you'll be more than ok.
If it's SHV, well... would you use SLI or not? You've obviously prepared for it.