# How do I calculate DIMM size?

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## How do I calculate DIMM size?

Because it takes 8 bits to make 1 byte, the capacity of the module can be calculated by grouping the memory chips on the module into groups of eight. If each chip contains 512Mb, a group of eight means that the module has a size of 512MB (512Mb x 8 = 512MB).

## What are the number of memories required of size 16×4 to design a memory of size 64×8?

Right Answer is: D Memory chips available are of 16 X 4 = 64 bits memory in one chip.

## What is memory module density?

The density of a memory module refers to the number of the chips that are on the module. Different computers require the memory module to be built with a different number of chips. i.e. There is more than one way to build a 128MB or 256MB memory module.

## Is 1Rx8 better than 2Rx8?

Generally you can mix 1Rx8 and 2Rx8, as well, though mixing different kinds of RAM sometimes prevents interleaving (i.e., it might be a tad slower). I do recommend running a memory test after RAM upgrades, though. Windows Memory Diagnostic is probably sufficient, though MemTest86 or MemTest86+ is better.

## Which is better single or dual rank memory?

Generally Single Rank Memory is faster than Dual Rank Memory, in layman’s terms when a computer accesses Single Rank Memory it only has to go around the track once, where are Dual Rank it would have to go around the track twice.

## What is the size of a memory address?

Each address identifies a single byte (eight bits) of storage. Data larger than a single byte may be stored in a sequence of consecutive addresses.

## What is the memory size?

In practice, memory is measured in KiloBytes (KB) or MegaBytes (MB). A kilobyte is not exactly, as one might expect, of 1000 bytes. Rather, the correct amount is 210 i.e. 1024 bytes. Similarly, a megabyte is not 10002 i.e. 1, 000, 000 bytes, but instead 10242 i.e. 1, 048, 576 bytes.

## How many unique addresses would be required to access 2 to the 16 memory cells?

So 2 to the power of 16 is 65,536, commonly referred to as 64K. The number of memory words addressed on a bus is 2 to the power of the width of the address bus, in this case 16. So 2 to the power of 16 is 65,536, commonly referred to as 64K.

## When power is switched off which memory loses its data?

volatile memory
RAM is a type of volatile memory because it will lose its data if the power is turned off. ROM or Read Only Memory is a type of non-volatile memory which means it keeps its data even if the power is turned off.

## What is the most common type of memory module?

DRAM (Dynamic Random Access Memory) The most common type of computer memory.

## How is the size of a memory module determined?

Each chip contains 8 bits. Because it takes 8 bits to make 1 byte, the capacity of the module can be calculated by grouping the memory chips on the module into groups of eight. If each chip contains 512Mb, a group of eight means that the module has a size of 512MB (512Mb x 8 = 512MB).

## Which is an example of a memory density?

Each cell holds one bit of information. Memory chips are often described by how much information they can hold. We call this chip density. You may have encountered examples of chip densities, such as “64Mbit SDRAM” or “8M by 8”. A 64Mbit chip has 64 million cells and is capable of holding 64 million bits of data.

## How big is a dual bank memory module?

A dual-bank module has two groups of eight chips for a capacity of 1GB (512Mb x8 = 1024MB, or 1GB). If the module has nine instead of eight memory chips (or 18 instead of 16), the additional chips are used for parity checking and support ECC error correction on servers with this feature.

## How many memory modules does a server need?

For example, if a server can address 8 ranks. It may take a variation of 1GB, 2GB, 4GB and 16GB module to achieve this.