title: Is memcpy accelerated in some way on the iPhone?
body: <p>Few days ago I was writing some code and I had noticed that copying
  RAM by memcpy was much-much faster than copying it in for loop.</p>
  
  <p>I got no measurements now (maybe I did some time later) but as I remember the same block of RAM which in for qas copied in about
  300 ms or more by memcpy was copied in 20 ms or less.</p>
  
  <p>It is possible, is memcpy hardware acelerated?</p>