Mark Hattersley recently wrote a summary of the iPad benchmarks. His Macworld article is a good reference if you are trying to decide which iPad to purchase. Here’s the Geekbench raw CPU results for all iPads:
Mark concludes with this this:
There’s no doubt that the new iPad 4 stomps all over the iPad mini in terms of raw power. Like the recent iPhone 5 and iPod touch update, there’s been a serious performance boost that doubles the capability of the device. What’s not so clear is why? Why has Apple introduced these all-new powerful devices, because there’s currently no particular advantage to the end user. The iOS interface is snappy on all devices, the current generation of games are designed to work on all machines (and our experience in the past is that developers stick with designing for the whole market rather than the latest iOS models for a long time). Perhaps the only advantage is a small performance gain when exporting movies or audio in iMovie or GarageBand.
There’s still a big advantage to getting an iPad 4 over an iPad mini, namely the Retina Display, which is in itself worth the extra money. But don’t think that the iPad mini is less of an experience. It may be smaller, with a smaller screen, and a non Retina display, but it runs all the programs and apps just as well as the recent iPad 3 with Retina Display.
Whether Apple has something planned for the iPad 4 (as well as iPhone 5 and iPod touch) that takes advantage of all that extra power is another matter. The iPad 4 certainly has more future-proofing behind it.
But here and now: they’re both great devices.