7 Differences between RAM and ROM

Author: Tanmay Chakrabarty

First Published On: Friday, August 24, 2018 at 2:17 AM
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RAM stands for Random Access Memory and ROM stands for Read Only Memory. Both of these devices are memory devices and are required by a system to function. Following are the differences between RAM and ROM.



Basic differences between RAM and ROM

Differences Between RAM and ROM:


#
RAM
ROM
1
RAM is a volatile memory, that is, it requires external power to keep its data on it
ROM is non-volatile memory, that is, requires no external power to keep its data intact
2
RAM is expensive
ROM is cheaper
3
RAM stores program data when the system is up and running
ROM stores data required by the system to boot
4
Storage capacity of RAM is higher
Storage capacity of ROM is lesser
5
CPU can access the data stored in RAM
CPU can’t access the data in ROM, however, to do so, CPU first copies the data from ROM to RAM
6
Writing data to RAM is faster
Writing data to ROM is slower
7
RAM is used as the primary memory
ROM is required by hardware to store small amount of data permanently

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