Code:
cpu family : 6
model : 26
model name : Genuine Intel(R) CPU 000 @ 3.20GHz
stepping : 4
model : 26
model name : Genuine Intel(R) CPU 000 @ 3.20GHz
stepping : 4
That's a 23% speedup with -4way, 63% total speedup with -4way + hyperthreading.
33% faster with hyperthreading than without it.