How many queries to save entire resultset

Hey,

I'm trying to reduce the number of DB queries that occur when performing an operation on every model of a resultset. If I iterate over a result and perform the same operation, does phalcon perform man small db queries, or does it create a larger one?

IE:

$results = Model::find($conditions);
foreach($results as $result) {
    $result->status = "changed";
    $result->save();
}

Or should i create a phql query to do this, or is there something else I should be doing to reduce the number of DB calls?