Their chart shows that the iPhone gets much lower latency for using up to 7 MB though <a href="http:&#x2F;&#x2F;images.anandtech.com&#x2F;doci&#x2F;9824&#x2F;A9X_Latency2.png" rel="nofollow">http:&#x2F;&#x2F;images.anandtech.com&#x2F;doci&#x2F;9824&#x2F;A9X_Latency2.png</a><p>There’s a huge latency gap between L2 cache and DRAM.<p>Maybe not too many workloads need data chunks that fit into 7MB but can’t fit into 4MB.