yes you were hitting some good ocs with the OCZ, pity you moved.
the newest memtest btw is available
http://www.memtest.org/ here you just burn image to a CD, then boot from it, it will run a series of tests to check for errors, its the best, most reliable way to test your ram.
I have heard the new ram you have loves the volts. you might need 3.2 on it to get the best from it.