Re: Pqi Ram Issue
the psu might actually be fine, not sure what else you have in your system...but aside from the chip being hot. How is your case cooling? Do your other chips have heat spreaders? It could just be that adding the additional chip raises your system pass a stable thermal level...hence the crashing
if the ram is pc2 and 240 pin, all should be compatible, just defaulting to whatever ram is slowest.
It could be the case of insufficient psu based on the needed for added airflow/cooling, ie., you need some additional fans and the base line psu will then become insufficient