Memory Module Specifications

Question 1

What are the characteristics of Dual Inline Memory Modules? (DIMMS)?

Answer 1

1. Printed Circuit Board (PCB) type used as a placeholder for memory chips
2. Separate electrical contacts on each side of the module
3. 64-bit data path
4. Used with various SDRAM memory types (SDR, DDR, DDR2, and DDR3)

Question 2

For SDR SDRAM (Single Data Rate) memory every single clock cycle there is a single piece of data transferred. True or False?

Answer 2

True

Question 3

For DDR SDRAM (Double Data Rate) memory, every clock cycle you can send double the amount of data opposed to SDR Ram. True or False?

Answer 3

True.

1. Twice as fast as SDR (single data rate)
2. Twice as much information in exactly the same clock time as SDR memory.

Question 4

How many pins does a SDR SDRAM have?

Answer 4

168 Pins.

Question 5

Why is SDRAM (Synchronous Dynamic Random Access Memory) called “Synchronous”?

Answer 5

It’s synchronized with the clock that’s inside the computer (the system bus).

Question 6

How many pins does DDR SDRAM have?

Answer 6

184 Pins.

Question 7

1. How many transfers per second does a DDR-200 Perform?
2. What is it’s total data throughout in MB/s?
3. What is it’s module name?

Answer 7

1. 200 Million.
2. 1,600 MB/s
3. PC1600

Question 8

What are the characteristics of Double Data Rate Synchronous Dynamic Random Access Memory (DDR SDRAM) ?

Answer 8

1. 184 contact pins
2. Reads/writes 2 words of data per clock cycle
3. 1 notch on the module contact surface

Question 9

What are the characteristics of Double Data Rate 2 Synchronous Dynamic Random Access Memory (DDR2 SDRAM)

Answer 9

1. Reads/writes 4 words of data per clock cycle
2. 1 notch on the module contact surface
3. 240 contact pins

Question 10

What are the characteristic features of the Double Data Rate 3 Synchronous Dynamic Random Access Memory (DDR3 SDRAM)?

Answer 10

1. 1 notch on the module contact surface
2. 240 contact pins
3. Reads/writes 8 words of data per clock cycle

Question 11

Taking advantage of the performance benefit offered by the multi-channel memory architecture does not require memory modules of matching speeds

Answer 11

False.

The memory modules need to have matching speeds

Question 12

What’s the module name of DDR2-800?

Answer 12

PC2-6400

Question 13

How many pins does a SO-DIMM SDRAM DDR and DDR2 have?

Answer 13

200 pins.

Question 14

How many pins does a SO-DIMM SDRAM DDR3 have?

Answer 14

204 pins.

Question 15

How many pins does a Micro-DIMM SDRAM DDR have?

Answer 15

172 pins.

Question 16

How many pins does a Micro-DIMM SDRAM DDR2 and DDR3 have?

Answer 16

214 pins.

Question 17

What are MicroDIMM’s used for?

Answer 17

Notebooks.

Question 18

What is an RDIMM?

Answer 18

A registered memory module.