More speed with Dolphin

[Iluuu1994]

Hey guys

I tried to run some old gamecube games today..
But actually, it didn't work that well.
Is there a way to speed up Dolphin or my computer??
I'm running a mac, so I'm able to use Windows or Mac OS X.
Some informations:

MacBook Pro
Intel Core 2 Duo 2.53 GHz
NVIDIA GeForce 9400M
2x 2 GB DDR3

Is my computer too slow?

What shall i do???

thank you

[GundamQuatro]

use windows, it's better...then go to: http://www.dolphin-emu.org/performance.html