Chicago Bulls center Joakim Noah has been persistent in his belief that his team can compete with the Miami Heat, but the stark reality that the Heat may have too much star power is becoming too tough to overcome.

"Sometimes effort isn't enough," Noah said after the Bulls' 101-93 overtime loss to the Heat in Game 4 of the Eastern Conference finals on Tuesday. "You got to do more than that. We had mental lapses. We can't turn the ball over against this team at all because they get on the break and they're really tough to stop in that situation."

The Bulls had 19 turnovers, including two costly ones in overtime and couldn't keep up with LeBron James, Dwyane Wade and Chris Bosh who combined for all 16 of the Heat's point in the extra session.