Quote Originally Posted by Rabbi_NZ
really good find dude... there is always a certain IC on a memory stick that maxes out first... this way we can burn-in the poorer chip only, hopefully, strengthening the module's weakest point.

Thanks. In fact, that's why I started doing localized burn in because I was always getting errors in a certain memory range. (eg. 610-640 meg). So, I just totally stress test that section of ram. The errors did in fact go down after some extreme burn in.