Just speed in Mhz no longer matters these days.
A64 at lower freq are better than Intel processors, then there are dual core.
At the moment my dual core opteron 165 is @ 2.7ghz - 1.48v
Btw the poll options are missing 100 mhz in each range
it should be
Above 3Ghz
2.5 - 3.0 GHz
2.0 - 2.5 GHz
1.5 - 2.0 GHz
Below 1.5 GHz
otherwise you are missing 100mhz in each option