I was wondering if there is any difference in performance (or any other important factor) between a file sent to the browser from our server by this method : 

```
For i = 1 To fileSize \ chunk
  If Not Response.IsClientConnected Then Exit For
  Response.BinaryWrite stream.Read(chunk)
  Response.Flush
Next

```

VS 

the old plain file access method that the IIS comes with.

We are working on a file manager handler for security reasons and would like to know what is the performance hit.