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iPad Pro's A9X chip features a 12-core GPU, lacks an L3 cache

Apple's new 12.9-inch iPad Pro has a 12-core GPU inside its A9X processor, compared to only six GPU cores in the A9 chip used in the iPhone 6s and 6s Plus smartphones. This information was revealed in a new teardown of the A9X processor. According to Anandtech: We don't know the clockspeed of the GPU – this being somewhat problematic to determine within the iOS sandbox – but based on our earlier performance results it's likely that A9X's GPU is only clocked slightly higher than A9's. I say slightly higher because no GPU gets 100% performance scaling with additional cores, and with our GFXBench Manhattan scores being almost perfectly double that of A9's, it stands to reason that Apple had to add a bit more to the GPU clockspeed to get there. One other interesting discovery in the teardown is that the A9X has no L3 cache: The only cache to be found on A9X are the L1 and L2 caches for the CPU and GPU respectively, along with some even smaller amounts for cache for vario...<br clear='all'/>

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Source: iPad Pro's A9X chip features a 12-core GPU, lacks an L3 cache (http://feedproxy.google.com/~r/TheIphoneBlog/~3/Ydp2h9jNzkY/story01.htm)