duel 570gtx cards vs 970gtx graphics card?

I m thinking of upgrading but I m not sure how much power my rig has. Since It has two 570 cards does that mean that it has something like a 950 or 970 rating or not.

Destiny2015-11-27T16:25:48Z

Computers Deals

http://amazon.com/b/?node=759498&tag=bfcmd-20

Ant2015-08-30T18:54:01Z

More like a 650