Bell racked up 100 yards in 10 carries. Brees connected on 9-of-14 passes for 87 yards, including his scoring toss to Pierre Thomas.
Matt Schaub went 11-of-16 for 97 yards and a touchdown to David Anderson for Houston, which is 1-1 in pre-season play. Backup quarterback Dan Orlovsky was 11-of-17 for 136 yards, a touchdown and an interception.
Steve Slaton ran for 30 yards on six carries, and Andre Johnson caught four passes for 38 yards for the Texans.
Garrett Hartley hit a 22-yard field goal, and Rod Harper returned a punt 79 yards for a touchdown. The Saints also got TD runs from Herb Donaldson and P.J. Hill.