Got 4 sticks too
tested 2 sticks and got this:
http://valid.x86-secret.com/show_oc.php?id=249894

tested the another 2 sticks and got this:
http://valid.x86-secret.com/show_oc.php?id=250643


But together cant test the 4 sticks xtreme as tested in pairs, just finishing tweak my WC setup to go to tests.