Is my pc ready for dolphin?

Just wondering if there's anything I could do to improve my framerate in a few specific games. Those games being LoZ Skyward Sword, LoZ Twilight Princess (wii), LoZ Wind Waker, and finally Super Mario Galaxy. Any help would be greatly appreciated! Thanks

pc specs: i3-3220@3.3ghz
gtx 560 oc 2gb
8 gb 1333 mhz ram
windows 8 x64
dolphin 4.0.2