What is L3 cache?
Level 3 or L3 cache is a specialized memory that works hand in hand with L1 and L2 cache to improve your computer's performance. L1, L2 and L3 cache cache is a computer processing cache (CPU), verses other types of cache in the system, such as a hard disk cache. CPU cache takes care of the needs of the microprocessor by anticipating the data requirements so that the processing instructions are provided immediately. CPU cache is faster than a random access memory (RAM) and is designed to prevent narrow places in performance. The CPU works many times faster than the RAM System, so to reduce the delay, the L1 data in the ready has a ready -to -date cache that expects it to be needed. The L1 cache is very small, allowing it to be very fast. If the instructions are not present at the L1 cache, the CPU checks L2, a slightly larger group of cache, with a little longer latency. With each cache miss it looks like the next level of the cache. L3 cache can be much greater than L1 and L2, and although it isAlso slower, it is still much faster than loading from RAM.
assuming that the necessary instructions are found in the L3 cache ( cache hit ), bits of data can be evicted from the L1 cache to detain new instructions if they are needed again. The L3 cache can then be removed by this line of instructions because it is now located in another cache (referred to as exclusive cache), or it could hang on a copy (referred to as inclusive cache), depending on the CPU proposal.
For example, in November 2008 AMD® released its quad -core chip Shanghai . Each core has its own L1 and L2 cache, but the cores share a common L3 cache. L3 keeps a copy of the required items if the other core is submitted.
Architecture for multi -level cache is still evolving. L1 cache the outer for the CPU, built into the baseDays of the albums, but now both the L1 and L2 cache and L2 are commonly integrated into the ground CPU. The motherboard was usually built into the L3 cache, but some CPU models already include L3 cache. The advantage of having on -board cache is that it is faster, more efficient and cheaper than the placement of a separate cache on the motherboard.
Cache loading instructions are faster than RAM System calls and good cache design significantly improves system performance. The construction and strategies of cache will vary on different motherboards and CPUs, but all others are the same, more cache is better.