Difference Between DDR and Flash Memory Units

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There are different forms of computer memories available in the field of computer hardware market and every memory has its own specific role to play. Flash memory and DDR mem are two significant computer memories which come in desktop computers and laptops. If you are buying a computer mem upgrade, it is very important that you know the essential difference between flash memory and DDR mem.

Flash memory is a special type of memory which can be programmed and re-programmed and it can also be electronically erased. Flash memory non-volatile computer mem and it is the best user friendly type of memory which makes effective use in the game consoles and memory cards. Flash memories are used in USB flash drives which easily fix to the USB ports and users can save the data easily in them. The area where intensive use of flash memories is seen includes laptops, PDAs, digital cameras, audio players, and phones. Since flash mem is a non volatile memory, all the data stored is not lost unless you do not erase or stored in the RAM mem. Flash mem comes in two forms namely NOR and NAND. NOR can easily access any type of mem location using the data busses and full addresses. However, NAND has faster writing and erasing timings but does not have random access. NAND flash mem is used for memory cards, but is not meant to be used as replacements for ROM chips. However, there are limits to flash memories and the most significant being that flash can only be erased and rewritten only for finite number of times. But even though flash memory can be erased and rewritten for finite number of times, it is considered to be the most popular memory which can add difference to your computer and laptop and make it work efficiently.

Next, we switch on to DDR mem. This type of mem is quite commonly used in desktop computers. DDR mem also known as Double Data Rate has evolved from SDRAM and is twice faster than SDRAM. DDR mem can easily transfer data up to2133MB / s, and the best thing is that it consumes less power than the traditional SD RAM memories. There are different types of variants of DDRs available in the RAM market. DDR1, DDR2 and DDR3 are the common types and you have to make sure that DDR mem you select is compatible with your computer system.

Whether you have Dell, HP, or Sony, or any other make, all that matters when you are buying memory upgrade is the compatibility. Dell memory upgrade is a right option to go ahead with, if you are thinking to increase the memory of our computer. To know precisely about the type of memory which is compatible with your Dell desktop or laptop, you need to opt for memory selector. The role of memory selector will be to find appropriate compatibility of DDR1, DDR2 or DDR3 memory upgrades with your Dell desktop or laptop.



Source EzineArticles by Patty Garcia

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