iPhone 5s Benchmarks Leak on GFXBench

With all the attention the iPhone 5s is getting, it was about time benchmarks of the device were leaked, and the source of the leak is no other than popular graphics benchmark GFXBench. Unfortunately, though, the device information the benchmark results gives us isn't plentiful. 

The device info on GFXBench's website only confirms the resolution (1136 x 640) and the presence of iOS 7, which were both more than known. The GPU name is only shown as "Apple A7 GPU", so there's not much that we can extract from that. However, deductions based on the little info Apple did provide us about the GPU indicate the A7's GPU could be a PowerVR 6 "Rogue" series GPU. 

On the T-Rex HD Offscreen test, the iPhone 5s gets a very good score, surpassing the iPhone 5 with more than 3x the performance (Apple claimed the iPhone 5s was just twice as fast as the iPhone 5 in graphics), and when compared to the Android crowd the iPhone 5s also does really well in this test, slightly surpassing the Nvidia Shield and only kept from the top spot by the Samsung Galaxy S4 with the Snapdragon 800 (GT-I9506). Onscreen T-Rex HD tests show, roughly, a 2.5x increase in performance compared to the iPhone 5, and is above every other Android device except for the Nvidia Shield. 

Moving on to the Egypt HD tests, the Offscreen test gets the iPhone 5s just shy of a 2x increase over the iPhone 5, but it has a lower score than many Adreno 330 and some Tegra 4 devices and actually has a very similar score to the iPad 4. The Onscreen test shows a bit more than a 25% increase over the iPhone 5 and is in line with many Adreno 320 devices which have a slightly higher 720p resolution and is significantly behind the Adreno 330-sporting Galaxy S4 and the Nvidia Shield.

Fill rate, which has always been plentiful in Apple's GPUs, sees an unprecedented score in mobile, outperforming every other mobile device by a huge margin. Although, at the iPhone 5s' low resolution, the gains in fill rate won't be a factor in real-world gaming performance.  Although I'm sure that the impressive fill rate of the Apple A7 will be of benefit to a very high resolution device, like the upcoming iPad 5. 

Interestingly, all of the Triangle Throughput tests get much lower scores than on the iPhone 5, iPad 4 and most PowerVR SGX MP-based Apple devices. If I had to guess, this is due to an architectural difference between that generation of PowerVR GPUs and Rogue. Basically, each module (read: core) of a PowerVR SGX MP GPU is an exact copy of each other, which means that each added module contained their own geometry hardware, so that the MP3 and MP4 (tri-core and quad-core) versions in the iPhone 5 and iPad 3/4 ended up with a lot of geometry compute, hence the insane Triangle Throughput scores these devices achieve. Rogue works differently. Each GPU module adds just shading hardware, so geometry hardware remains constant no matter how many modules you add. While this means Rogue devices will earn less impressive Triangle Throughput scores, it ensures that there'll be no unnecessary amounts of geometry hardware (let's face it, the iPhone 5 and iPad 4 had much more geometry compute than what would ever be necessary for a mobile device). Nevertheless, the iPhone 5s appears to pack enough geometry compute to be competitive with other GPUs. 

Apple appears to have outfitted a very powerful GPU for the iPhone 5s. While this smartphone doesn't take the top spot in most tests, I suppose this will be the job for the upcoming iPad 5. 

Apple iPhone 5s Review

Apple announced the anticipated successor to the iPhone 5, the iPhone 5s, along with the budget oriented iPhone 5c during its September 10 event. As the "5s" designation indicates, Apple's new iPhone brings incremental improvements to its predecessor.

The iPhone 5s has an almost identical design to the iPhone 5, except for its color options. The 5s is available in white, gray and gold colored aluminium. Like the iPhone 5, the 5s is 7.6mm thick and weighs 112g. The rest is pretty much identical to the iPhone 5.

Apple has added two very interesting features to the iPhone 5s: a dual-LED flash, where each LED has a different color temperature, and software-based measurements tell with what intensity should each of the LEDs light up in order to create a natural-looking lighting. Also, while the rear camera is still 8 MP, in an age where 13 MP cameras are a must for a flagship, and there are even 41 MP bearing smartphones. Apple is compensating for the unchanged image resolution by increasing pixel size, making the optical sensor 15% larger. HTC used the very same strategy with the HTC One. Other details about the camera include an unsurprising 1080p video capture capability and one cool new feature: An option for 120fps 720p video recording, which then gets played back at 30fps to create a nice Slow Motion effect.

The other cool new feature of the iPhone 5s is the Touch ID fingerprint sensor. Basically, the iconic Home button has been overhauled, and now consists of a sapphire crystal layer on the top, beneath which is a fingerprint scanner, so that you no longer need to protect your iPhone with a password or PIN; just put your thumb over the Home button and, given that you've registered your own fingerprints on the phone, voila, your iPhone unlocks. That is what I consider to be the most innovative feature of the iPhone 5s. 

Changes aside, the iPhone 5s still has the same Gorilla Glass-coated 4-inch 1136 x 640 (326ppi) IPS display from the iPhone 5, which, by today's standards, is far too small for a flagship smartphone. 

Under the hood, the iPhone 5s also packs some notable improvements over its predecessor. Battery capacity is slightly increased, but what takes the spotlight is the new Apple A7 chip. One rather remarkable accomplishment is that the A7 is the first smartphone processor based on the ARMv8 ISA. This means that the A7's CPU is a 64-bit CPU; a first in any mobile device. SoCs based on ARMv8 were only supposed to start appearing in the next year or two, but Apple has beaten everyone to it. A 64-bit CPU doesn't sound like it'll be very useful on a mobile device (Apple won't need to make an iPhone with more than 4 GB of RAM in years, probably), and the performance gains it brings are minimal for most smartphone usage scenarios, but it does pave the way for the future of iPhone. Other than the architecture, Apple didn't specify any details about the A7's CPU (what a surprise). They only said that it's performance is double than the iPhone 5's A6 processor. That should roughly put it on par with the Snapdragon 600, but significantly behind the Snapdragon 800 and the Exynos 5 Octa. On the GPU side, Apple went on to say that the GPU is also twice as powerful as the iPhone 5's and that it supports OpenGL ES 3.0. The support for OpenGL ES 3.0 can only mean that Apple is moving away from the PowerVR SGXMP architecture it's been using since 2011, and possibly adopting ImgTech's new PowerVR series, codenamed Rogue. 

Last but not least, the iPhone 5s will be shipping with the overhauled iOS 7 and is expected to become available this month with the usual 16, 32 and 64 GB storage options.