What is a cache? What is Cache?

Cache memory identifies duplicate instructions and data that are in primary memory and copies them to its memory. Instead of repeatedly accessing slower main memory for the same instructions and data, the CPU accesses the faster cache.

The cache, sometimes referred to as CPU memory, typically runs on high-performance SRAM memory modules. The CPU has access to faster cache memory to run performance-sensitive operations. Cache memory is usually integrated under the motherboard, or on different chips, interconnected with the CPU via a bus.

The English word for cache is cache. A special memory subsystem in which frequently used data is replicated to facilitate quick CPU access. The cache memory of the memory is stored for frequent access.

The contents of the RAM location and the address where these data items are stored. When the processor references an address in memory, the cache checks to see if it exists. If this address is stored, the data is returned to the processor; If the address is not saved, regular memory access is performed.

Because the cache memory is always better than the main RAM

The memory is fast, so when.

When the access speed of RAM is slower than the speed of a microprocessor, cache memory is often used.

What the caching does:

Before the CPU starts executing any instruction, it first retrieves that instruction from memory, along with some other relevant data and information. To speed up the operation of the CPU, almost all chips employ two different types of internal memory, namely cache. Caches are used to temporarily store frequently used pieces of program or data.

L1 cache is the best-performing type of cache, and the processing unit that interprets instructions and performs arithmetic operations forms the core of the CPU. The CPU can read instructions or data stored in the L1 cache at full speed. Intel's processor products typically have 32K L1 cache, while competitors like AMD or Via use more L1 cache.

If the required instruction or data is not found in the L1 cache, the processor looks at the L2 cache with a larger capacity. L2 caches can be either integrated into the CPU chip or used as an external cache. pentium

The II processor has 512K L2 cache and works at half the speed of the CPU. Celeron as well as newer pentium

The iii chip has 128K and 256K on-chip L2 cache, respectively, and is capable of running at full processor speed.

For instructions or data stored in a slower L2 cache, the processor often has to wait 2 to 4 clock cycles. In order to make the most of computing resources, the CPU can view and execute other instructions that are waiting to be processed during this time, but do not require additional data, increasing the speed of the entire system and reducing idle time to a minimum.

4K-64THRD is a random 64 queue depth test, the software will generate 64 test files of 16MB size (1GB in total), and then write and read tests in these 64 files at the same time at 4KB unit size, and finally the average score will be the result.

The cache disk is only responsible for improving the performance of the hard disk, not the storage of data, even if the cache disk is damaged, it will not cause data loss on the hard disk.

The cache disk can effectively extend the service life of the HDD and reduce the working frequency of the HDD. Friendly answers.

Other parameters:Power Performance: Voltage: 5V.

Working: 2w.

Standby:. Good enlightenment.

Other performance: memory chip: DDR flash.

Performance: 4K IO Response: 5500 or more.

4K-64thrd io response: 14500 or more.

Operating temperature: 0-70.

The above content reference: Encyclopedia - Jinsu cache disk K25