Well the dual fan zotac card has stock base clock of 1392mhz and a boost clock of 1506mhz vs the zotac mini with a base clock of 1303mhz and boost clock of 1417mhz. So that means the dual fan card will perfom ever so slightly better, but probably not to a degree you would ever notice gaming. And you could apply a small overclock to the zotac mini with software like msi afterburner and bring it right up to the speeds of the dual fan zotac card, however you may need to add a bit more speed to the fans which you can also do in msi afterburner to keep temps in check. I doubt there is any difference in durability or longevity if you mean that, you will more than likely upgrade long before either card dies.