How much more suction does the Roomba j7+ have compared to the 600 series?

The [Roomba j](https://www.amazon.com/s?k=Roomba+j&tag=wehavethat-20)7+ has 10x the suction of the 600 series, which is enough to pull dog hair out of medium-pile carpet — a real improvement over older Roombas that mostly just pushed dirt around.