- Cache:
- Cache (memory) =
a very fast
(but small size)
memory module place
near the
CPU
Example:
The rectangle on the left is a CPU
The rectangle on the right is a (level 2) cache
- How a
cache is
connected to the
CPU and
memory:
- Cache (memory) =
a very fast
(but small size)
memory module place
near the
CPU
- Small size:
- A cache (memory) can store only a portion of the entire memory content
- Types of caches:
- Level 1 cache:
- The cache memory is located
on the silicon material of
the CPU itself.
(The closest possible location to the CPU)
- Very fast and very expensive
- The cache memory is located
on the silicon material of
the CPU itself.
- Level 2 cache:
- The cache memory is located
on a
separate silicon material but
inside the
casing of the
CPU silicon material
(The 2nd closest possible location to the CPU)
- Fast and moderately expensive
- The cache memory is located
on a
separate silicon material but
inside the
casing of the
CPU silicon material
- Level 3 cache:
- The cache memory is located
outside the
casing of the
CPU silicon material
(The worst possible location to the CPU)
- Slower but very cheap
- The cache memory is located
outside the
casing of the
CPU silicon material
- Level 1 cache: