Unofficial information that Intel's upcoming codenamed Meteor Lake processor is set to feature L4 cache has been floating around for some time now. Now, a new Intel patent found by VideoCardz indicates that Intel has prepped a codenamed Adamantine L4 cache tile that it may use for some CPUs. This IC could compete against AMD's 3D V-Cache in certain applications, but the chiplet will not be used solely as a performance booster.
Typically, caches serve to increase the performance of the memory subsystem by rapidly providing compute cores with necessary data. But there are other use cases too, as large caches can store a lot of data. The patent suggests that Intel's Adamantine (or ADM) cache can improve communication not only between the CPU and memory but also between the CPU and security controller. For example, the L4 can be used to improve boot optimization and even preserve data from caches at reset to improve loading times.
