What is the difference between v.2.9.x and v.3.x?
http://www.mikrotik.com/download/CHANGELOG_3
especially at the bottom:
What’s new in v3.0beta1:
*) added support for SATA disks;
*) added initial support for SMP on x86;
*) added support for up to 2Gb of memory on x86;
and everything else =)
ty 