The correct answer is Solid State Drive

• Solid State Drive
  • A solid-state drive (SSD) is a new generation of storage device used in computers. SSDs replace traditional mechanical hard disks by using flash-based memory, which is significantly faster.
  • Older hard-disk storage technologies run slower, which often makes your computer run slower than it should.
  • SSDs speed up computers significantly due to their low read-access times and fast throughputs. 
• Advantages of SSD over HDD
  • The standard HDD (hard disk drive) has been the predominant storage device for computers (both desktops and laptops) for a long time. The main draw is the high storage capacity and low cost.
  • The SSD (solid-state drive) is another storage solution and is slowly replacing the majority of hard disk drives. As you'll learn by reading the following comparison table, the SSD technology is superior. However, due to its price per unit of memory, it doesn't make sense to use SSDs in all instances. For most computer users, we recommend using an SSD as the primary drive for your operating system, and the programs you access most frequently. Then, we suggest purchasing a large HDD (either internal or external) for storing documents, pictures, and music.

• ROM
  • Read-only memory is a type of non-volatile memory used in computers and other electronic devices.
  • Data stored in ROM cannot be electronically modified after the manufacture of the memory device.
• RAM
  • Random-access memory is a form of computer memory that can be read and changed in any order, typically used to store working data and machine code.
  • A random-access memory device allows data items to be read or written in almost the same amount of time irrespective of the physical location of data inside the memory