Marco Gaiarin wrote:
I've swapped this SM50 with another SM50 module (again, different part number but also different ``look'': no TI logo on heatsink, ...), and the other got two identical (same part number) SM50, and their SS20 work flawlessy...
check your parts number on <http://mbus.sunhelp.org/> *some* level of mixing are acceptable, some are not ; the rough guideline is, you can't mix major revisions of CPU and/or cache controller. Lots of gory details are available on <http://mbus.sunhelp.org/misc/genconf.htm> HTH -- Romain Dolbeau <romain@dolbeau.org>