SqlDataReader vs SqlDataAdapter: which one has the better performance for returning a DataTable?

Question

I want to know which one has the better performance for returning a DataTable. Here for SqlDataReader I use DataTable.Load(dr)

Answer 1

SqlDataReader has historically been significantly faster than SqlDataAdapter. Improvements may have been made in .NET 4.5, but I doubt it has improved enough to outpace the performance of the DataReader.