So how much faster is the fourth-generation iPad than the iPad Mini? Raw benchmarks show a yawning gap between Apple's newest tablets.
Though benchmarks are typically more theoretical than real-world (that is, you won't necessarily feel a big speed boost using everyday apps), they're instructive because they show the potential of the underlying silicon.
... iPad Mini: The new Mini and the older iPad 2 test at 752 and 755 on Geekbench, respectively, according to CNET.
Both devices test similarly because they use Apple's older A5 chip. And by comparison, the iPhone 4S -- which also uses an A5 chip -- scored 629.
Similar scores have been published elsewhere for the Mini.
... So the tradeoff for a smaller, thinner, cheaper device is that you get old Apple silicon -- not unlike what's happened to the MacBook in the past.
... The take-away is that consumers have a pretty stark choice between a smaller, less-expensive, lower-performance iPad Mini and a heavier, more-expensive, high-performance 4th gen iPad.
Excerpted from here:
iPad Mini vs. iPad 4: A glance at raw benchmarks | Apple - CNET News