DDR-RAM stands for Double Data Rate Synchronous Dynamic Random-Access Memory. These are the computer memory that transfers the data twice as fast as regular chips like SDRAM chips because DDR memory can send and receive signals twice per clock cycle as a comparison.
They are widely used in applications that are demanding high speed, memory, for example, graphic cards that need to access a large amount of information in a very short time to achieve the best graphics processing efficiency to improve the gaming.
History of DDR RAM
In 1997 Samsung was the first company that released the DDR memory prototype in 1997 and launched the first commercial DDR SDRAM chip in June 1998 which was followed by many other companies. The first retail PC motherboard using DDR SDRAM was released in August 2000. There are many versions of DDR RAM. The DDR was first released in 1998 followed by its successor version i.e. DDR 2 in 2003, DDR 3 in 2007, and DDR 4 in 2014.
Characteristic of DDR RAM
- Its primary advantage is the ability to fetch data on both the rising and falling edge of a clock cycle, doubling the data rate for a given clock frequency. For example, data transfer frequency is 200 MHz of DDR200 device, but its bus speed is 100 MHz.
- DDR1, DDR2, and DDR3 are the types of DDR RAM memories that use the 2.5, 1.8, and 1.5V supply voltages respectively, thus it produces less heat and provides more efficiency in power management than older SDRAM chipsets, which uses 3.3V.
Advantages of DDR RAM
- It offers much faster speeds than SDRAM.
- Each generation of DDR are updated and following with its successor DDR2, DDR3, DDR4.
Disadvantages of DDR RAM
- It can’t be used with old motherboards.
- Some machines support only slower RAM.
- They are not physically fit in memory slots due to its notches
- There pinouts are totally different from others.
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