Benzema believes Jose Mourinho's squad have what it takes to redress the balance of power in Spanish football, especially with their Portuguese boss having had a season to settle in at the club.
When asked if Real feel they can beat Barca, Benzema told AS: "Sure we can, I have never doubted it.
"We are a great team, but we started last season with a new coach, with players and gradually had to fit everything together.
"Now we can continue with the same group and some reinforcements and I am convinced that we will be very competitive. We're going to make it very difficult for Barca, I can assure you.
"We will be very strong this year. The group is fantastic. Everyone gets along. We are very supportive and we have a very good coach. I am very optimistic about this new season."