[SHARE] Learn more about RAM on a laptop computer

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RAM (the full name is Random Access Memory) is random access memory because it has the property: the time to perform the read or write operation for each cell is the same, regardless of the location. do in memory.

I have a very detailed article on the concept of RAM on the computer already, if you have not read it, I encourage you to re-read that article here!

Because in this article I will not repeat again, but instead I just dig deep about knowledge related to RAM on Laptop only.

Some other great articles about computer RAM that you can refer to are:

#first. Types of Laptop RAM are commonly used today

Some types of RAM that are being used very popularly on the current laptop market are:

  • DDR3 RAM
  • DDR3L RAM
  • DDR4 RAM
  • LPDDR RAM
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#2. Difference between DDR3 RAM and DDR3L RAM

2.1. For DDR3 RAM:

  • Popularly used when the Core i CPU chip appeared.
  • RAM Buses: 1066, 1333, 1600 MHz

2.2. DDR3L RAM (RAM using low voltage)

  • Started to be widely used on laptops using 4th generation Intel Core i chips.
  • Use lower voltage than DDR3 RAM (ranges from 1.25 – 1.35V)
  • Combined with Haswell CPU to minimize the energy consumption of the computer => increase the time using the Battery on the Laptop.

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Note: Please note that these two types of RAM, although the pins are the same, cannot be used interchangeably.

2.3. Distinguish based on test parameters from CPU-Z software:

Open the software CPU-Z up => then you scroll through the tab SPD => and observe the item Voltage to get to know.

  • RAM DDR3 use the power source 1,5V

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  • RAM DDR3L use lower power, is 1,28V – 1,35V

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# 3. Learn about DDR4 RAM on Laptop

  • Voltage use only 1,2v (Again, DDR3: 1.5v. DDR3L: 1.35v)
  • High Bus Speed ​​from 1600 Mhz or more – we have other popular Buses like 2133, 2400, 2666 Mhz (and DDR3, DDR3L is 1333Mhz and above).
  • Compatible with 6th generation CPU core (Skylake)
  • DDR4 uses 288 pins instead of the 240 pins on DDR3.
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The number of contacts of DDR4 RAM is more than that of DDR3

# 4. Find out about the parameters on RAM

4.1. Size of RAM (calculated = MB / GB)

The larger the capacity, the faster the computer’s processing power.

The most popular RAM capacities on the market today are:

512MB => 1GB => 2GB => 4GB => 8GB => 16GB

4.2. Bus (in Mhz)

The bus is the path connecting memory to the processor. The larger the width of the road, the more data can be circulated at the same time.

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Types of RAM buses that are popular on the market today are:

1066 => 1333 => 1600 => 1866 => 2133 => 2400 => 2666 => 3200

  • DDR3 has the following RAM Bus levels: 800, 1066, 1333, 1600, 1866, 2133MHz
  • DDR4 has the following RAM Bus levels: 1600, 1866, 2133, 2400, 2666, 3200, 4266MHz

# 5. Instructions on how to read the parameters on Laptop RAM

You can look at the picture below for visualization, very clear then J Some information that we need to care about is:

  • Capacity of RAM
  • RAM type (for example, say PC3 then it means DDR3 RAM, if written as PC3L then it means DDR3L RAM).
  • Bandwidth of RAM.
  • RAM bus = Bandwidth / 8

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# 6. Learn about LPDDR RAM

This type of RAM consumes low energy, mainly used on mobile devices such as smartphones, tablets …

LPDDR Redesigned from the DDR RAM standard, it optimizes energy consumption and optimizes surface area for easy assembly on mobile devices.

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LPDDR RAM

# 7. Epilogue

Above is some basic information about RAM on a laptop computerThis is the knowledge that I think you should know to better understand the product you are using.

Hope this knowledge will be useful to you. Good luck !

Kien Nguyen – techtipsnreview
See article from The Mobile World

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Source: [SHARE] Learn more about RAM on a laptop computer
– TechtipsnReview

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