Thanks, informative.

It seems some projects report in different ways, at least on the website, as I haven't checked host files. Amicable and e@h it seems lists only name for 1 card, unlike asteroids (see @parejan comment). As tasks at e@h take the same time to finish (+/- 5%) I would be surprised if they are both 970s, as this computer takes either ~1000s or ~3000s to solve a task. Unless one card would be severely starved of some resources and the other not.