I'm not worried
We don't even know what intelligence is.
The Computer AI people only make progress because like Humpty Dumpty in "Through the Looking glass" they have redefined it.
If it was possible to write a real AI program and the only issue was lack of computer power we would have a slow AI already.
I'm sceptical that a true AI program can be developed.
There are many other scenarios in the world that seem much more of a risk!