Where is the cache located on the motherboard?
When talking about the computer's data cache, i.e. L1, L2, and L3 cache, this cache is usually located on the computer processor chip and not on the motherboard. The L1 cache, or system cache, is the fastest cache and is always located on the computer processor. The next fastest cache, L2 cache, as well as L3 cache, are also almost always on the processor chip and not the motherboard. Some earlier computers (e.g., 486 computers) may have had either of these types of cache on the motherboard and even had L2 cache expansion boards that could be added to the computer.
The L2 and L3 cache is on the processor chip and is not built into the CPU.