- Apr 12, 2001
Following the launch of the iPhone 6s and 6s Plus last month, it was discovered that Apple is dual sourcing the A9 chip for the new devices from both TSMC and Samsung, with the chips from the two companies measuring at slightly different sizes due to different processes used in manufacturing the chips. As users began to determine which chips were used in their devices, data began to point toward a 60/40 split in favor of TSMC, although the ratio has shifted toward 50/50 as more data has been obtained.
Benchmarks have suggested there is little if any difference in chip performance between the two A9 variants, but some recent battery testing (via Engadget) is hinting at the possibility of significantly better battery life for models with the TSMC-manufactured A9 chip.
We should caution that data points remain few at this time and controlling for variables to accurately focus the comparison only on the differences in the A9 is difficult, but these limited tests are generating significant amounts of interest in our discussion forums and elsewhere.
Perhaps the most dramatic result comes from a reddit poster who compared Samsung and TSMC versions of the iPhone 6s Plus using the battery life test included in Geekbench 3, finding the TSMC version lasting nearly two hours longer than the model with Samsung A9 chip.
Geekbench battery tests on TSMC (left) and Samsung (right) iPhone 6s Plus variants
We asked John Poole of Primate Labs, the developers of Geekbench, for any insight into the dramatic differences being observed in some cases, and he noted there have been rumors of TSMC's 16-nanometer process being "superior" to Samsung's 14-nanometer process in power consumption. He was, however, surprised by the amount of difference in observed battery life considering the various components have essentially identical performance benchmarks. Ideally, further controlled testing can be performed to offer a more accurate comparison between the variants.Ran this test a couple times and results were consistent. Always about a 2 hour difference in duration. Both phones were tested using the same backup, same settings. Also tried testing them as new phones and results were similar.
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Article Link: TSMC's A9 Chip Outperforming Samsung's in Early iPhone 6s Battery Benchmarks