Mike Hellers and his friend Chris Pinnock put this video together to show you the actual differences in speed amongst the different iterations of the iPhone. They included a 2G model, a 3G, a 3GS and the iPhone 4 – side by side. The differences from the 3GS to the 4 are not as large of a gap as you might think they are. However, when compared with the 2G, the iPhone 4 is blazing fast.

Surprisingly, there were a few small areas where the phones were fairly equal. For instance, they all opened Google Earth at nearly the exact same time. However, when loading up Safari, the iPhone 4 blew its predecessors away.

How does your latest cell phone stack up against older models? Is there truly much of a difference?