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    A Few Types of Memory (RAM)  

    With all the acronyms you see about memory it can be kind of confusing, so we are here to try and clear it up a little bit for you. Some acronyms I will be explaining are SDRAM, DDR, DDR2 and DDR3. Some of the differences are: 




    SDRAM, DDR, DDR2 and DDR3 

    I have listed SDRAM, DDR, DDr2, and DDR3, DDR4 which are memory technologies in themselves. Trying to keep things simple, they have their differences which include their age, speed, operating voltage, and timings. Even though SDRAM contains the RAM acronym, they are all types of RAM. RAM stands for Random Access Memory and is often used as another way of referring to “memory”. Anytime you see any of these types of memory listed as maybe DDR RAM, DDR2 RAM or DDR3 RAM just know it is the same thing as DDR, DDR2, and DDR3. SDRAM is ONLY written this way. 

    Just because SDRAM, DDR, DDR2, DDR3, DDR4 are all memory or “RAM” technologies, they have their difference too. One main difference between all the DDR RAM is that they have different number of pins. For DDR3 RAM it has 240 pins, on the other hand DDR4 RAM has 288 pins. Each one has its own exclusive specifications, including memory slots that are usually incompatible with other types, therefore you can’t go installing more than one type in your computer. Have a DDR computer or laptop? Install only DDR RAM. Have a DDR2 computer or laptop? Only DDR2 RAM will work and so forth.
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