Yesterday, a hands-on video of an iPhone 4S was leaked in the wild showing some browser performance benchmarks. Today, the first GeekBench benchmarks for the iPhone 4S have been published which quite clearly reflects the superior performance of A5 dual-core chip over this predecessor. currently, two iPhone4,1 (4S) benchmarks have been posted which according to MacRumors, appear to be legitimate. The listed specs in the benchmark show an A5 processor that resembles the results from from the iPad 2 while 512 MB RAM appears to be in-line with what we believe an iPhone 4S sports.
The iPhone 4S receives a total Geekbench score of ~622. This falls slightly below the iPad 2 scores of 749, but well above the iPhone 4 benchmarks of 370. So, the new iPhone seems to benchmark about 68% faster than the iPhone 4, and about 17% slower than the iPad 2.
The iPhone 4S A5 processor is likely underclocked (800MHz) as compared to the iPad 2 processor (1 GHz), explaining the slightly lower performance.
The pre-orders of iPhone 4S are currently shipping to customers for delivery on October 14th!