Change title of a content type
For altering the saved title, try auto_nodetitle module, it can do what you want there.


Download and install the module
Enable the module in Drupal
Edit the relevant content type settings ( Admin &gt; Structure &gt; Content types )
Set the Automatic title generation option, using field tokens for the field values


If you want to update the display only, then you can use a node.tpl.php template preprocess function

e.g in your theme template.php file, replace THEMENAME with your theme name.

function THEMENAME_preprocess_node(&amp;$vars){
  $node &amp;= $vars['node'];
  if ($node-&gt;type == 'product') {
    $text = $node-&gt;field_manufacturer[LANGUAGE_NONE][0]['value'] . ' ' . $node-&gt;field_chip[LANGUAGE_NONE][0]['value'];
    $vars['title'] = check_plain($text);
  }
}


Clear theme registry cache after adding a new preprocess function