| Base Of Difference | RAM | ROM |
| (1)Location | RAM is present in Desktop/Laptop/Mobile
| ROM is also present in Desktop/Laptop/Mobile |
| (2)Full Form | RAM stands for Random Access Memory
| ROM stands for Read Only memory |
| (3)Definition | RAM is volatile memory which stores the files temporarily on which we are working.
| ROM is non-volatile memory that will holds the permanently instruction for our system. |
| (4)Types | RAM:-(i)Static RAM(SRAM)
(ii)Dynamic RAM (DRAM
| ROM:-(i)Programmable ROM
(ii)Erasable Programmable ROM
(iii)Electrically Erasable Programmable ROM
(iv)Mask ROM |
| (5)Working Type | Data stored in RAM can be altered and retrieved
| Data stored in ROM can only be read |
| (6)SPEED | IT is high speed memory then ROM
| ROM is slower than RAM |
| (7)Size and Capacity and Cost | Higer capacity and large in size and Costlier
| Small size and less capacity and cheaper than RAM |