The first Intel CPU to feature external cache was the Intel Pentium Pro. External cache is also referred to as L2 cache, while internal cache is called L1 cache.
The Level 3 (L3) cache has the highest latency. The CPU cache is memory that is used to decrease the time that it takes the CPU to access data. Because the data is cached, it can be accessed more quickly. The CPU cache is often found directly on the CPU or built into the CPU. The L3 cache is usually larger than the L1 and L2 cache, but it is searched last. The CPU searches for data in the following order: L1 cache, L2 cache, L3 cache, RAM.
The Pentium Pro had both an L1 and an L2 cache on the CPU.
CPUs do have a cache (either L1, L2 or L3), but cache is not exclusively on the CPU.
L3 cache is located on the motherboard or in CPU housing.Hope this help.
cache
cache is the type of memory within the CPU. It is extremely fast and is very small storage wise (it only comes in megabytes)
Many CPUs have what is known as a CPU cache. The function of this CPU cache is to speed up access to data.
The only memory on the CPU is cache memory and it is only dependent on the CPU type and generation you use.
Cache memory is the high speed memories which are repeatedly requested by the Cache client (CPU). Whenever the requested data from the cpu is present in the cache, it directly supply the data and is known as cache hit(fast) and when the data is not accessible in cache then cache access the block of the main memory and feed to the CPU and it is termed as cache miss (slow).
The original Intel Pentium was the first to have a 64-bit data bus while it's predecessor, the i486 was the first to feature an on-die L1 cache.
Cache is a high speed memory which is basically used for the following reason: As the speed of the main memory is not as much as the speed of the CPU.so just to compensate the speed mistmatch between the CPU and main memory the cache is used in between the two.so whenever the CPU asks for any data its being checked with the cache memory and if present then "cache hit" occurs or else "cache miss" occurs wher the CPU takes the data form the main memory and that data's cpoy is being send to the cache for any further operation where the CPU can request for the same data. Anand bhat(mca@kiit-870024)