cpuid wrapper

[nobody_]

Vendor string:    GenuineIntel
Processor string:               Intel(R) Pentium(R) 4 CPU 2.80GHz
Features:         MMX SSE SSE2 HTT
Multithreading:   2 threads / 1 cores

>
> Vendor string:    GenuineIntel
> Processor string:               Intel(R) Pentium(R) 4 CPU 2.66GHz
> Features:         MMX SSE SSE2 HTT
> Multithreading:   1 threads / 1 cores
>
> HTT with 1 thread/core?

HTT can be disabled/enabled in bios, maybe you have it disabled?