Which Memory Is Costly In Terms Of Cost Per Bit?

Which memory has shortest access?

Discussion ForumQue.Which of the following memories has the shortest access times?b.Magnetic bubble memoryc.Magnetic core memoryd.RAMAnswer:Cache memory1 more row.

What is computer memory hierarchy?

In computer architecture, the memory hierarchy separates computer storage into a hierarchy based on response time. Since response time, complexity, and capacity are related, the levels may also be distinguished by their performance and controlling technologies.

Which type of memory is fastest?

Fastest memory is cache memory.Registers are temporary memory units that store data and are located in the processor, instead of in RAM, so data can be accessed and stored faster.More items…

What do you mean cache memory?

Cache memory is an extremely fast memory type that acts as a buffer between RAM and the CPU. It holds frequently requested data and instructions so that they are immediately available to the CPU when needed. Cache memory is used to reduce the average time to access data from the Main memory.

Which of the following is highest in memory hierarchy?

The following image illustrates the components in a typical memory hierarchy.Auxiliary Memory. Auxiliary memory is known as the lowest-cost, highest-capacity and slowest-access storage in a computer system. … Main Memory. … I/O Processor. … Cache Memory.

Which of the following term is most closely related to main memory?

Main memory is sometimes called main storage and secondary memory is sometimes called secondary storage or mass storage. Main memory: closely connected to the processor. stored data are quickly and easily changed.

Which memory has the highest cost per bit?

The memory hierarchy in datacenters typically consists of different types of memory as shown in Figure 1. The on-chip SRAM memory at the top of the pyramid is the fastest, but also the most expensive and hence provisioned in limited quantity.

Which is the fastest and most expensive memory in memory hierarchy?

registersWe can arrange the different types of memory in a pyramid. At the top is the fastest, smallest, and most expensive memory, the registers. At the bottom, the largest, cheapest, and slowest memory, off-line archival storage (e.g. a tape library).

Which is lowest in memory hierarchy?

Most modern computer systems use a hard drive made of magnetic or solid state storage as the lowest level in the memory hierarchy (see Figure 8.4). … It provides a much larger capacity than is possible with a cost-effective main memory (DRAM).

Is primary memory cheaper than secondary memory?

Primary memory data is directly accessed by the processing unit whereas Secondary memory data cannot be accessed directly by the processor. Primary memory is costlier than secondary memory whereas Secondary memory is cheaper compared to primary memory.

What is memory hierarchy with diagram?

The memory hierarchy design in a computer system mainly includes different storage devices. Most of the computers were inbuilt with extra storage to run more powerfully beyond the main memory capacity. The following memory hierarchy diagram is a hierarchical pyramid for computer memory.

Which type of cache memory in the computer would normally be the largest?

In most modern CPUs, the L1 and L2 caches are present on the CPU cores themselves, with each core getting its own cache. L3 (Level 3) cache is the largest cache memory unit, and also the slowest one.

What is cost per bit?

The cost per bit is just the price you have to pay for specific amount of memory. If some amount of brand X memory costs $20 and the same amount of brand Y memory costs $25, then brand X has better cost per bit.

Which one has the fastest memory access time?

Fastest memory is cache memory.Registers are temporary memory units that store data and are located in the processor, instead of in RAM, so data can be accessed and stored faster.More items…

Which memories are if magnetic memory type?

Garnet is a type of magnetic material is normally used in bubble memories.Bubble memory is a type of non-volatile computer memory that uses a thin film of a magnetic material to hold small magnetized areas, known as bubbles or domains, each storing one bit of data.More items…