Hyperthreading very bad

[Fantasy_emulation]

HI

I have done 2 test, then i think :

Hyperthreading is very bad for dolphin.

this is picture of my test with i3 330m 2.13GHZ Hyperthreading :

first situation : http://img831.imageshack.us/i/httest1.png/
second situation : http://img204.imageshack.us/f/httest2.png/

For the first situation :

Dolphin is running, i have 25fps(so not fullspeed) and cpu working at 60%

For the second situation :

2 dolphin is running, 2 dolphin are not fullspeed but my cpu is working 100%.

Then, i want than during my first situation, my cpu must be 100%

Thanks and sorry for my bad english