MacBook 2008 compared to MacBook Air 2013

I just ordered the MacBook Air with 8 GB of RAM and 256 GB of storage. However, the processor is only 1.3 GHz with a turbo boost up to 2.6. In looking at the specs on my current 2008 MacBook, which runs REALLY slow and locks up all the time, the processor is 2 GHz. Is the MacBook Air really going to run much better than what I have now? I'm sure it must but I don't really understand how/why. Thanks!

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