21.5 MH/s on ethash per gpu and with the same card on cryptonight i get 575 H/s

Sapphire R9 380X

Every coin has a different algo and every algo is different for every card.

7970 gives 17mh/s with ETH

XMR will be about 525h/s.

Thank you both, I was wondering if there is some calculator for that, like whattomine.com, this site is good but has only 2 GPU's,

why they have only two of them?

two short question,

1) how come up that accoriding to whattomine.com 750ti has more power is some algorithms than 280x?

2) Is there any correlation between different algorithms? for example if 7970 gives 17mh/s for ETH, how to calculate what power can I get for XMR?