Bad comparison, it doesn't have a hard drive, it has flash memory, the GHz alone doesn't say much, it's not running vista but a version of the iPhone OS, my iPhone(3G, not GS) can run that with only 412 MHz AND my iPhone can run run games as well. So why would the same software not run on a device that has more than twice the CPU power? You're completely forgetting that all the software that you can get on the AppStore is pretty much optimised to run on the device (or an iPhone/iPod Touch, both of which are slower, the 3GS has 600MHz). Now of course the graphics cards are another issue but I'd expect it to have at least the same as the iPhone 3GS(which is faster than that of the 3G), haven't seen that mentioned anywhere though.
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