secondary cache 
Another term for L2 cache (Level 2 cache), secondary cache stores data in memory that resides on a chip that is separate from the microprocessor. This means that secondary cache is slower than primary cache (or L1 cache), which resides on the processor chip. However, secondary cache's advantage is that it's much larger. By storing data in a cache (whether L1 or L2), the microprocessor can get to it faster than if it accesses the main memory (RAM).