CPU cache is the fast memory between the cores and main memory. What L1, L2, and L3 each do, why cache lines are 64 bytes, and when more cache actually makes a processor faster.

CPUs have a number of caching levels. We've discussed cache structures generally, in our L1 & L2 explainer, but we haven't spent as much time discussing how an L3 works or how it's different compared ...

Necessity is the mother of invention, and advances in chip packaging are catching up to those in transistor design when it comes to working in three dimensions instead of the much more limited two.

Intel is upping the L3 cache of its next-gen Xeon "Granite Rapids" CPUs with flagship SKUs featuring up to 480MB of L3 cache. Intel's current 5th Gen Xeon "Emerald Rapids" processors were launched in ...

AMD is working on a mysterious dual-cache Ryzen processor, and early benchmarks give us a glimpse of what its bigger L3 cache has to offer. In the current state of PC affairs, those who want to get ...

Because that "glue" holding them together adds a bit of latency.