I use this one (i made) for Asus Strix ROG RX480 8G with (Samsung memo) it's just 1750 memo strap on 2000, but i also use WattTool to adjust the core clock to 1200 (956mv) and the memo clock to 2150 (900mv)... stable for a couple of days...
Hope this helps... http://www72.zippyshare.com/v/GnXvJBjq/file.html