On Apr 25, 2006, at 4:30 PM, JoaoBR wrote: >> Without it, only 3GB of RAM are usable. >> > > more or less 3.5 - 3.7, yes On a SunFire X4100, with the default BIOS settings, 4GB RAM shows up as 3GB. When you turn on the software (or hardware if your configuration permits) remapping, you get to bump this up to about 3.7GB. Still lame, but what can ya do...