Flash memory is special type of memory which can be programmed and re-programmed and it can also be electronically erased. Flash memory non-volatile computer memory 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 extensive use of flash memories is seen includes laptops, PDAs, digital cameras, audio players, and phones. Since flash memory is a non volatile memory, all the data stored is not lost unless you do not erase or stored in the RAM memory. Flash memory comes in two forms namely NOR and NAND. NOR can easily access any type of memory location using the data busses and full addresses.
However, NAND has faster writing and erase timings but doesn't have random access. NAND flash memory is used for memory cards, but is not meant to be used as replacements for ROM chips. However, there are limitations 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.
System memory or RAM is commonly used in desktop, server and mobile devices. RAM comes in many module types, one of the variants is called DDR memory also known as Double Data Rate and has evolved from the much slower SDRAM. DDR memory can easily transfer data up to 3200MB/s and consumes less of 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 memory you select is compatible with your computer system.
Author: Patty Garci