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Apple iPhone 4S processor estimated at 800MHz, lives up to Apple's claims


News by Dan Seifert on Tuesday October 11, 2011.

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Apple doesn't like to talk about specifications too much when it comes to its iPhone and iPad devices, but that doesn't stop users from trying to decipher exactly how many megahertz and megabytes are found in Apple's devices. The latest iPhone 4S is equipped with an A5 processor pulled from the iPad 2, and tests from around the web show that it is likely clocked slightly slower than the iPad 2's unit, but that it still performs much better than the A4 chip found in the iPhone 4.

Apple claims that the iPhone 4S offers twice the web browsing speed and seven times the graphics performance of the iPhone 4. According to various tests, it seems like these claims are accurate. In the SunSpider Javascript benchmark, which measures the speed of a web browser, the iPhone 4S clocks in at 2,222ms, just over half of the iPhone 4's 3,921ms. Another web browser benchmark, BrowserMark, gives the iPhone 4S a score of 89,567, compared to the iPhone 4's 51,701 (higher scores are better in the BrowserMark test).

Graphics performance tests corroborate Apple's claim of seven times better performance with the iPhone 4S, as it scored 73.1 on one test and 122.7 on another. The iPhone 4 measured 11.2 and 15.3 on the same tests.

AnandTech estimates, based on the various processor benchmarks, that the A5 processor in the iPhone 4S is clocked around 800MHz, or 200Mhz less than the 1GHz processor found in the iPad 2. This would make sense as the iPhone 4S has a much smaller battery than the iPad 2. The iPhone 4's A4 processor was estimated to be running at a similar 800MHz as well.

Based on these tests, it seems like the iPhone 4S will be a smoker when it comes to web browsing and 3D game performance, though for anyone that has used an iPhone 4 or iPad 2, that should come as no surprise.

 
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Dan Seifert
Dan is MobileBurn.com's Editor-in-Chief. Based in Poughkeepsie in New York, Dan can be found on Twitter as @DCSeifert.

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