Memory Types And Form Factors

Front 1

Name the two types of RAM

Back 1

A) SRAM - Static Random Access Memory

B) DRAM - Dynamic Random Access Memory

Front 2

Which of the following RAM type needs constant refreshing, even if the power to the chip is not interrupted:

A) SRAM
B) DRAM

Back 2

B) DRAM

Front 3

Name 3 types of DRAM

Back 3

A) EDRAM
B) SDRAM
C) EDO DRAM

Front 4

Define EDRAM

Back 4

combination of DRAM and SRAM - System performance improvement of 40%, often used in L2 Cache.

Front 5

Define SDRAM

Back 5

Uses clock signals and internal registers to synchronize the number of requests the processor can perform in a given time. It is the most popular type of RAM today

Front 6

Improved mode of FastPage Mode DRAM memory. Also known as Hyper Page Mode DRAM. This type RAM allows Multiple sequential memory access. What type of RAM is this?

Back 6

Extended Data Out (EDO) DRAM

Front 7

a form of SDR-SDRAM that transfers data on both the leading and falling edges of a clock cycle. This capability doubles the data transfer rate of memory.

Back 7

DDR-SDRAM

Front 8

a form of SDRAM that uses onboard cache registers to improve performance.

Back 8

EDDR-SDRAM

Front 9

form of SDRAM that uses small cache buffers to provide faster data access. This type of memory is used in L2 cache applications.

Back 9

ESDRAM

Front 10

This type of SDRAM transfers data on one edge of a clock cycle.

Back 10

SDR-DRAM

Front 11

What type of SDRAM is designed to handle graphics operations? It is single-ported and has dual-port operations that allow two memory pages to be opened simultaneously. Itis in sync with the system clock and is very fast.

Back 11

SGRAM

Front 12

Whtat type of SDRAM consists of onboard cache buffers that increase multiple access times?

Back 12

VCM-SDRAM

Front 13

What two types of DRAM are special types of DRAM are used for high-speed video applications?

They use a dual-port memory configuration, which means that they can receive and send data at the same time.

One type provides faster performance than the other. What is it?

Back 13

VRAM and WRAM. WRAM is faster.

Front 14

What kind of SRAM transfers data from memory to the microprocessor? The data is returned to the cache in one clock cycle.

Back 14

Asynchronous SRAM

Front 15

What kind of SRAM loads many data locations, over many clock cycles, from the cache? It is faster and more expensive than pipeline SRAM.

Back 15

burst-mode SRAM

Front 16

What kind of SRAM first fetches data by using three clock cycles and then accesses the data addresses from the microprocessor? It uses fewer clock cycles than burst-mode SRAM. This kind of SRAM is less expensive than burst-mode SRAM, but not as fast.

Back 16

Pipeline SRAM

Front 17

What kind of SRAM is in sync with the system clock and can transfer data to the microprocessor in one clock cycle?

Back 17

Syncronous SRAM

Front 18

What kind of memory is memory that stores recently accessed data so that it can be accessed from memory more quickly than other data.

Back 18

Cache memory

Front 19

What type of cache is a microprocessor's internal cache? Describe where it was first seen.

Back 19

L1 Cache - Also known as the primary cache.

The original Intel Pentium had 16 KB of L1 cache.

Front 20

What type of cache is a static memory cache stored on the motherboard of older Pentium processors? It is not part of the CPU. What chip did this cache come in the same package with the processor. What memory sizes does this type of cache come in?

Back 20

L2 Cache - also known as "External Cache".

Although it later came in the same package, it wasn't integrated into the processor like L1

Front 21

Where there is L2 cache in the microprocessor housing, and additional cache is on the motherboard, then the additional cache on the motherboard is known what type of Cache?
What types of microprocessors is this cache found on?

Back 21

L3 Cache.

This cache is found on Xeon and Itaniam chips and compatible motherboards. These are usually used as Servers.

Front 22

Name the system for identifying single-bit errors in stored data.

Back 22

Data Error detection.

Front 23

Name the process involving rewriting data during reading and wrting cycles to DRAM Memory modules?

Back 23

"Refreshing" or memory refresh.

Front 24

What happens when a parity error occurs?

Back 24

An NMI (Non-Maskable Interrupt) is generated and freezes and give a short memory count or gives you the option to continue or shut down.

Front 25

Describe Parity Error checking. How does it work?

Back 25

Parity Error checking adds one bit – either 0 or 1 – to each word in memory, resulting in every word having either an even or an odd number of ones. A parity error occurs if a parity bit in a single memory bit changes.

Front 26

name the code that detects and corrects single-bit errors but can only detect multiple-bit errors.

Back 26

ECC - Error Correction Code.

Front 27

What memory form factor are a series of DRAM modules – or chips? These install upright on the motherboard.

Describe the number pins and size of data path

Back 27

DIMM - Dual Inline Memory Module

168 pins, 64 bit data path. These are the most commonly used form factor.

Front 28

What kind of RAM form factor is connected in series? What kind of system do they use to transfer data?

Back 28

RIMM - Rambus Inline Memory Modules

They use a loop system to transfer data and they are unidirectional.

Front 29

What size memory chunks do RIMM modules transfer data in?

What is part of the system is the data synchronized with?

Back 29

16 bit chunks.

RIMM synchronizes with the Processors memory Bus speed, not the Motherboards clock. Usually in combination with a 400 MHz clock cycle.

Front 30

What type of memory module form factor installs at a slight angle into sockets on the motherboard

Back 30

SIMM - Single Inline Memory Module

Front 31

How are SIMM's unlike DIMM's?

Back 31

SIMM's only have one signal bit.

Front 32

Describe the two Form factors for SIMM's. Include number of pins and how many bits/ parity bits.

Back 32

30 Pin - 8 bit with 1 bit available for parity

72 Pin - 32 bits with an optional 4bits for parity.

Front 33

How many pins on a MicroDIMM?

what size is its data path?

Back 33

144 pins.

64 bit data path.

Front 34

Where are MicroDimms usually found?

Back 34

sub-notebook computers

Front 35

What 3 sizes can SO-DIMM chips be found?

Which 2 are most commonly found?

Back 35

SODIMM (Small Outline DIMM)

72 pin, 144 pin, 200 pin

72 and 144 are the two most common sizes.

Front 36

Name the data path sizes of the SODIMM 72 pin and 144 pin modules.

Back 36

72 pin - 32bit data size

144 pin - 64 bit data size.

Front 37

When working with a 32 bit Microprocessor, how many 30 pin 8 bit SIMM's would you need in a bank?

Back 37

4

(4 x 8 bits = 32 bit data bus.)

Front 38

How wide of a datapath is a 72 pin SIMM

Back 38

32 bits wide.

Front 39

Describes 4 distinguashing characteristics of a 72 pin SIMM form factor.

Back 39

A) it's shorter than the 168 pin DIMM's
B) it has one notch in the center of the PCB
C)pins on the opposite side of circuit board.
D) 32 bit wide data path

Front 40

Name the 5 distinguishing characteristics of a 168 pin DIMM.

Back 40

A) Inch shorter then 72 pin SIMM
B) 2 notches on the bottom of the PCB
C) Installs vertically
D) pins on opposite sides of circuit board are not electrically connected so they form 2 separate electrical contacts.
E) 64 bit wide data path

Front 41

How many SIMM's must be installed in one group or bank?

Back 41

4

Front 42

How many DIMM's must be installed in one group or bank?

Back 42

2

Front 43

True or False: DIMMs or SIMMs in the same bank can vary in type and size.

Back 43

False

Front 44

Name the sizes that single sided DIMM's come in:

Back 44

8, 16, 32, 64, 128 MB

Front 45

Name the sizes that double sided DIMM's come in:

Back 45

32 MB, 64 MB, 128 MB, 256 MB, 512 MB, 1GB, 2GB

Front 46

RIMM slots cannot be empty. What must you use to fill them?

Back 46

C-RIMM - Continuity RIMM's. These do not have any chips on them.

Front 47

Describe what the "density" of a RIMM means.

Back 47

The amount of data that each RIMM chip can hold.

Front 48

What are the available densities for non-ECC RIMM chips?

Back 48

128MB and 256MB

Front 49

What are the available densities for ECC RIMM chips?

Back 49

144 MB and 288 MB

Front 50

How do you Calculate the RIMM size?

Back 50

Multiply the amount of memory that each chip holds by the number of chips on the RIMM

Front 51

A 256 MB RIMM has 4 chips, each holding 32 MB or RAM. What is its RIMM size?

Back 51

4 x 32 = 128MB