I propose this one:
+==. | \ +---+ +====+ -+ +- || |DDR| || -+ +- || +---+ ||
Memory testing code is at github. Unfortunately, Google did not publish list of known bad models. If you run a test, can you post the results in commments? My thinkpad X60 is not vulnerable, my Intel(R) Core(TM)2 Duo CPU E7400 -based desktop (with useless DMI information, so I don't know who made the board) is vulnerable.