![]() ![]() Rambus DRAM (RDRAM) takes its name after the company that made it, Rambus. Typical SDRAM transfers data at speeds up to 133 MHz. This allows the CPU to perform more instructions at a given time. Synchronous DRAM (SDRAM) “synchronizes” the memory speed with CPU clock speed so that the memory controller knows the exact clock cycle when the requested data will be ready. As such, SRAM is faster but also more expensive, making DRAM the more prevalent memory in computer systems. It keeps data in the memory as long as power is supplied to the system unlike DRAM, which has to be refreshed periodically. SRAM (pronounced ES-RAM) is made up of four to six transistors.Since transistors always leak a small amount, the capacitors will slowly discharge, causing information stored in it to drain hence, DRAM has to be refreshed (given a new electronic charge) every few milliseconds to retain data. Each DRAM memory cell is made up of a transistor and a capacitor within an integrated circuit, and a data bit is stored in the capacitor. DRAM (pronounced DEE-RAM), is widely used as a computer’s main memory.There are two main types of RAM: Dynamic RAM (DRAM) and Static RAM (SRAM). It is therefore important to save data to the storage device before the system is turned off. RAM is fast but it is volatile, which means it will not retain data if there is no power. With more RAM on the computer, the less the CPU has to read data from the external or secondary memory (storage device), allowing the computer to run faster. ![]() Once the operating system is loaded, the computer uses RAM, which stands for random-access memory, which temporarily stores data while the central processing unit (CPU) is executing other tasks. It is used mainly to start or boot up a computer. It is non-volatile, which means it can retain data even without power. There are basically two kinds of internal memory: ROM and RAM. Examples include hard disk or solid state drives, USB flash drives, and compact discs. They could be embedded or removable storage devices. Internal memory, also called "main or primary memory" refers to memory that stores small amounts of data that can be accessed quickly while the computer is running.Įxternal me mory, also called "secondary memory" refers to a storage device that can retain or store data persistently. ![]()
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