Learning unit 3.3

Question 1

What factors affect the capacity, features and the performance of DIMMs?

Answer 1

-Number of channels they use
-RAM on one DIMM
-Speed
-Error checking abilities
-Buffering

Question 2

Explain a single channel DIMM

Answer 2

The memory controller is accessed 1 DIMM at a time

Question 3

Explain a dual channel DIMM

Answer 3

The memory controller communicates with 2 DIMMs at a time and doubles the speed and memory access

Question 4

Define PC rating

Answer 4

Its a measure of the total bandwidth of data moving between the module and the CPU

Question 5

What do registers and buffers do?

Answer 5

They hold data and amplify a signal before data is written

Question 6

Adding more RAM might solve

Answer 6

Slow performance
Applications refusing to load
An unstable system

Question 7

Compromises if the exact match of memory modules is not available

Answer 7

Mixing unbuffered memory with buffered or registered memory will not work

Match memory module manufacturer, if possible