Difference between RAM and HDD

 RAM and HDD both are types of computer memory, RAM is used to store computer programs and data that the CPU needs in real-time. RAM data is volatile and is erased once the computer is switched off. HDD has permanent storage and it is used to store user-specific data and operating systems files.

Also read: SDRAM Vs RAM 

Definition of RAM

RAM stands for random access memory, it is used to store the program and the data being used by the CPU in real-time. The data on the RAM can be read, written, and erased any number of times. RAM is a hardware element where it to be the data being currently used is stored. It is volatile memory.

Definition of HDD

HDD stands for a hard disk drive, It is called secondary memory. HDD memory is very high. It ranges from 500 GB to 4 TB on the desktop. HDD is used for storing digital information rapidly rotating disk coated with magnetic materials.

Difference between RAM and HDD:

  • RAM stands for random access memory, while the HDD stands for a hard disk drive.
  • RAM also called primary memory or main memory, while HDD is called secondary memory.
  • CPU can access data stored on RAM, while in Data to be copied from ROM to RAM so that CPU can access its data.
  • RAM has no moving mechanical part and consists of transistor etc, while in HDD contains moving mechanical parts like arms, pins, etc.
  • RAM is costly per unit storage, and HDD is cheap per unit storage.
  • Every memory area of RAM is accessible, while a different area of HDD may take a different time to access.
  • RAM has a small read/write, and HDD has a higher read/write time.
  • RAM doesn't produce any noise, While the HDD produces noise due to mechanical movements.
  • RAM memory is generally smaller than the HDD. nowadays its ranges from 1 GB to 8 GB on desktops, and HDD memory is very high. It ranges from 500 GB to 4 TB on the desktop.
  • If RAM is low, the computer will become slow, and HDD has not much impact on computer speed.
Explore more information: