How to Find the Size of L1, L2, and L3 Cache in Intel® Processors

Need information about cache size of L1, L2, and L3 for Intel® processor.

To find the total size of the L1, L2, or L3 cache for Intel® Processor, follow the steps below:

1. Install the Intel® Processor Identification Utility.
2. Launch the utility by typing in the search window Intel® Processor Identification Utility.
3. Click CPU DATA.

The sizes of the caches are listed in the tool.

For L1 size follow the steps below:

1. Add L1 Data Cache size and L1 instruction Cache size to get the L1 cache size per core.
2. Total size of the L1 cache for all cores equals to the number of cores multiplied by the L1 cache size per core.

Example:

L1 Data cache = 32 KB per core

L1 Instruction cache = 32 KB per core

So the L1 cache size per core = 32 KB + 32 KB, which = 64 KB

There are 4 cores reported, then the total size of L1 cache = 4 X 64 KB = 256 KB.

See illustration below.