The 64-bit A7 chip used in the iPhone 5s is ‘only’ dual-core, rather than the quad-core most had assumed, according to chip review site AnandTech. But no need to feel short-changed: the review concludes that dual-core is the optimum solution at present.
All the benchmarks we’ve seen point to the iPhone 5s being the fastest phone out there by some considerable margin.
The tools that count cores query the [operating system] and the OS returns the number of logical CPUs and they only returned two. The quad-core card was kind of forced. It’s definitely not the only way to arrive at the ideal performance-power for a phone …
With many benchmark tests generating results that are interesting technically but which don’t translate into real-life use, the review included a test designed to illustrate the kind of performance likely to be seen by users.
Our final browser test is arguably the most interesting. Rather than focusing on js code snippets, Browsermark 2.0 attempts to be a more holistic browser benchmark. The result is much less peaky performance and a better view at the sort of moderate gains you’d see in actual usage.
The speed advantage of the 5s over competitor phones is less dramatic, but the 5s still tops the league-table.