Quote from: ArtForz on August 21, 2010, 04:56:31 PM (https://bitcointalk.org/index.php?topic=820.msg10609#msg10609)
- AMD K10: 2 128bit units
- intel nehalem: 3 128bit units
This probably explains why hyperthreading increases performance with -4way. If three SSE2 units is excessive, then hyperthreading would help keep them all busy.