The folks over at Primate Labs make one of the best benchmarking tools for mobile devices you can get, and they’ve had their way with just about every smartphone and tablet Apple has ever made. Now that they’ve got their hands on an iPhone 5 and run some benchmarking tests on it (on both the GSM and CDMA versions), they’ve prepared a chart that shows how the iPhone 5 stacks up to previous iOS devices.

As one would expect, the iPhone 5, with its new A6 processor, is faster than every other iOS device ever. Just how far ahead of other recent devices it is may be surprising, though: it’s almost twice as fast as the current (third generation) iPad. Geekbench’s benchmark scores are based on speed relative to an old Power Mac G5 with a 1.6GHz processor, which scores exactly 1000 on Geekbench. With a score of 1574, the iPhone 5 becomes the first iOS device to be faster than a G5. Pretty impressive stuff.

The iPhone 5 still lags behind some newer Android hardware, however, as the new Galaxy Note II from Samsung scored an impressive 1991, and even the several months-old Galaxy S III managed a 1740. This should come as no surprise for those familiar with Apple’s modus operandi, as they tend to prioritize finish and build quality over raw power.

In any case, the fact that modern smartphones are faster – and in some cases almost twice as fast – as a full-size desktop computer that was still sold in stores until 2006 is pretty mind-blowing.