How Many Sets Are in a Cache?

Since each cache block is of size 4 bytes, the total number of sets in the cache is 256/4, which equals 64 sets. The incoming address to the cache is divided into bits for Offset, Index and Tag.

How do you know how many sets a cache has?

To determine the number of bits in the SET field, we need to determine the number of sets. Each set contains 2 cache blocks (2-way associative) so a set contains 32 bytes. There are 32KB bytes in the entire cache, so there are 32KB/32B = 1K sets.

What are sets in a cache?

— The cache is divided into groups of blocks, called sets. — Each memory address maps to exactly one set in the cache, but data may be placed in any block within that set. ▪ If each set has 2. x blocks, the cache is an 2x-way associative cache.