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I am interested in how much of the surface of a modern or older CPU's are taken by cache memory ?

Are there any statistics regarding the size that cache memory takes in CPU dies of today ?

Are the schematics of the cpu's available to the public ? From those schematics can one see how much of the CPU surface is taken by various parts of the CPU ?

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    \$\begingroup\$ Some CPUs have huge caches and some has tiny CPU cores, and some both. It's not very uncommon if cache is bigger than the CPU core. \$\endgroup\$ Mar 6, 2017 at 16:17

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Detailed schematics are not available. However, third parties can decap the chip and take pictures ("die shot"), and Intel occasionally make nice maps in their publicity material:

enter image description here

The actual amount of cache depends heavily on exact part number - high-end ones have huge caches.

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