Lab 4-7 DDR3-SDRAM

 

  1. Go to the following page: http://www.anandtech.com/memory/showdoc.aspx?i=2989&p=2

 

  1. Read the article and answer the questions below:

 

    1. What is JEDEC?
    2. Fill in the table below comparing DDR2 to DDR3

 

Official JEDEC Specifications

 

DDR2

DDR3

Rated Speed

 

 

Vdd/Vddq

 

 

Internal Banks

 

 

Termination

 

 

Topology

 

 

Driver Control

 

 

Thermal Sensor

 

 

 

    1. DDR ran up to speeds of _________________________
    2. DDR2 ran up to speeds of ________________________
    3. What will the initial DDR3 speeds be?
    4. Why is the 1333 number important?
    5. How does “fly by” technology improve the signal integrity of the chip?

 

    1. Why is signal integrity more important in DDR3?

 

    1. How many internal banks are used in DDR3 and what do those banks do to benefit the user?

 

    1. What are the names of two companies that have developed DDR3 chips?

 

    1. Name one motherboard that will support DDR3.

 

    1. So which is faster? DDR2 or DDR3? (Don’t guess, read the article.)

 

    1. To get the best performance, which memory would you buy and pair with which motherboard?

 

    1.