Yup it would be total commercial suicide to make PCIE 2.0 Cards work with only PCIE 2.0 motherboards,both PCIE 1.1 and 2.0 are the same in design the only difference is 2.0 has more bandwith but even the bandwith on 1.1 is no where close to being fully used yet so you'll be fine for a few years yet.