Emulate > 100%

Hey I just have a simple question that I can't find the answer to. I don't think I'm google-ing it in the right way. Anyways, on like whatever GBA emulator I use, you can use the space bar to make it emulator faster...as faster as it will allow it to go. Is there a way that I can make Dolphin run at say 200% speed?

Thanks,
Jesse