What is the difference between SDRAM and DDR RAM?

What is the difference between SDRAM and DDR RAM?

Let’s start with DRAM. Dynamic Random Access Memory is used to temporarily store information on computers. DRAM is

made up of many cells and each cell is referred to as a bit. A cell contains a capacitor and a transistor. Since computer machine language is made

up of 1s and 0s, it has the value of one when active and zero when inactive.
SDRAM or Synchronous Random Access Memory is the result of DRAM evolution. This type of memory synchronizes the input and output

signals with the system board. Its speed ratings are in MHz. SDRAM was introduced in 1996 and is still used today. SDRAM transmits every

clock count at a specific time.
DDR RAM (or Double Data Rate Random Access Memory) does the same but it does so twice every clock count. This makes DDR RAM

twice as fast as SDRAM. Over the years, RAM has become very fast and efficient – and it will be exciting to see what’s coming next.