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Digital Literacy Computer Basics Computer Basics Hardware

Joe M
PLUS
Joe M
Courses Plus Student 66 Points
Posted by Joe M
Joe M
Courses Plus Student 66 Points

Question: What are the different types of RAM? E.g.., what does this mean 16GB of 2133MHz LPDDR3 this is a RAM from Mac

Is there any way to understand what are the different types of RAM? For example in the subject line I have mentioned about this RAM

2 Answers

Michael Hulet
Michael Hulet
47,912 Points
Michael Hulet
Michael Hulet
47,912 Points
  • 16 GB means that there are 16 gigabytes of total memory in this RAM array.
  • 2133 MHz is the maximum clock rate of the RAM. The CPU can complete one clock cycle (read/write 8 bytes) with this RAM array 2,133,000,000 times every second, which means this RAM array can process approximately 16 2/3 GB of data every second¹
  • LPDDR3 stands for "Low Power Double Data Rate 3", which means that²
    • it takes less power and has more power saving features than older types of RAM
    • actually reads/writes 8 bytes of data twice per CPU clock cycle, which means it can actually process up to approximately 33 1/3 GB of data every second
    • is the 3rd generation of the DDR specification. It's newer than DDR2, but older than DDR4

Sources: 1, 2

Joe M
PLUS
Joe M
Courses Plus Student 66 Points
Joe M
Joe M
Courses Plus Student 66 Points

Hi Michael

Many Thanks for articulating so well these concepts!