These dual/logical/hyperthreaded CPUs are too confusing, at least under Linux.
Linux reports them as different CPUs.
Is it supposed to be SMP ? I.e. Does it require a SMP kernel?
Are applications actually making use of this?
I have a Intel® Xeon™ CPU 3.00GHz machine here with:
[hendry@airbus ~]$ cat /proc/cpuinfo | grep MHz cpu MHz : 2801.692 cpu MHz : 2801.692
AMD Opterons are better.