The private keys are encrypted in a different way in the Android App.
While there is a lengthy way to transfer the keys to an Android wallet, it’s easier to create a new address in the Android wallet and transfer the cons to that address.
@lizhi three years ago quoted 7850 @ 40KH/s, 7970 @ 70KH/s on ccminer, so probably near that or less. I have a 5770 in my Mac, and ran it with nsgminer under Windows (bootcamped) I think it was in the 20’s, but don’t quote me on it.