We just ran benchmarks on Apple's new iPhone 5S, revealing that, yup, this is the dopest smartphone silicon ever made. This thing freaking churns, crushing every other smartphone out there on both computational power and graphics. But if you look at common specs like core-count and clock speed for the hardware, you'd never know it.
By now, it's no mystery that specs aren't the whole story. Intuitively, we know that the quality of a smartphone is just as reliant on its industrial design and the quality of the software it runs. But it goes deeper than that: the traditional "specs" distract us from what a gadget's guts actually do, and from a technological point of view, they distract us from the advancements that are actually making a product better.
Apple's iPhone design is a masterpiece, and iOS 7 shows that Apple's got a mastery of operating systems as well, more or less. What's not as well-known is that Apple's a leader on guts as well. Here's a look at what the guts can do and how Apple beat the pack.
The fastest chip ever
The benchmarks for Apple's new iPhone 5S are absurd. After running Geekbench 3.0 on the hardware, we got scores that match up with the numbers reported by others, like those in AnandTech's unbelievably thorough survey of key performance tests. Geekbench's score is a nice measurement because it's built from a combination of measurements of computational speed across a variety of real-world processes like JPG compression and decompression. The combined score for the iPhone 5S beats everything else you'd consider buying and even Samsung's insane international version of the Galaxy S4.
The impressive results confirm many of the improvements Apple claimed in its early September keynote.
We ran the iPhone 5S's GPU through the commonly used GFXBench software, using its most-intense on-screen gaming test and compared it to the publicly available leaderboards for existing flagships out there. The chart above the average frame rates the graphics processor of each phone. A faster rates in this test would translate to smoother graphics on the most system-taxing games out there.
And the iPhone's graphics performance is spectacular: 37-frames per second, more than twice the iPhone 5's 14 fps. It'a also significantly than the next-best US smartphone, the Motorola Moto X, which clocks in at 25 fps. In short, the iPhone 5S's graphics powers are ready for the craziest games that'll be coming out in the years to come.
These aren't the only benchmarks out there, but they're reflective of what nearly all tests are finding: The iPhone 5S has the best measured performance of any phone.
The truth about cores, clock speeds, and battery life
Now, if you compare this performance to the specs—unofficially, but dug up by Geekbench —you'll be surprised. The A7's dual-core ARM processor is clocked at 1.3 GHz. Only 1 GB of RAM. Consider that most of Apple's competitors are running quad-core Snapdragon 600 processors, many of them, like the HTC One, clocked at up to 1.7 GHz. All of them pack 2 GB of RAM. What gives?
Here, we check back in with AnandTech, where Anand Shimpi drops knowledge. Turns out the specs we're getting fed by manufacturers are a bunch of bull—or at least only tell a small fragment of the story. "I always thought the transition from 2 to 4 cores happened quicker in mobile than I had expected," he begins, continuing later:
In such a thermally constrained environment, going quad-core only makes sense if you can properly power gate/turbo up when some cores are idle. I have yet to see any mobile SoC vendor (with the exception of Intel with Bay Trail) do this properly, so until we hit that point the optimal target is likely two cores.
In other words, the technology to efficiently power quad-core architecture in a smartphone while also taking advantage of extra cores doesn't exist yet. So all that theoretical power is coming at waaaaaay too high a battery cost, or it would it anyone was crazy enough to try for it. And the muscle that is being used now is not as efficient as it should be.
Worse there's a clock-speed war going on:
Then there’s the frequency discussion. Brian and I have long been hinting at the sort of ridiculous frequency/voltage combinations mobile SoC vendors have been shipping at for nothing more than marketing purposes. I remember ARM telling me the ideal target for a Cortex A15 core in a smartphone was 1.2GHz. Samsung’s Exynos 5410 stuck four Cortex A15s in a phone with a max clock of 1.6GHz. The 5420 increases that to 1.7GHz. The problem with frequency scaling alone is that it typically comes at the price of higher voltage. There’s a quadratic relationship between voltage and power consumption, so it’s quite possibly one of the worst ways to get more performance.
And here's where we turn to another piece of the puzzle that isn't covered in those benchmarks above: Battery life—the only spec that your should really read. You'll notice that Apple's A7 CPUs are clocked just above the 1.2 GHz sweet spot Anand describes. The core architecture and clock speed, are optimized for battery life. Consider that the iPhone 5's 1440 mAh battery had similar life to to the HTC One's 2300 mAh battery.