RAM Flashcards

1
Q

SIMM

A

Single Inline Memory Module

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2
Q

DRAM

A

Dynamic Random Access Memory

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3
Q

Modern DRAM Bits

A

32 bit and 64 bit

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4
Q

SDRAM

A

Synchronous Dynamic Random Access Memory, tied to system clock

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5
Q

DIMM

A

Dual Inline Memory Module

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6
Q

Laptop DIMMs

A

Micro-DIMM
Small-Outline DIMM (SODIMM)

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7
Q

DDR Ram

A

Double Data Rate, very fast

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8
Q

Dual Channel Architecture

A

Using two sticks to increase throughput

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9
Q

Current RAM Speeds

A

DDR3/4/5

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10
Q

DDR3

A

240 Pin
SO DIMM 204 pin
8 bit bandwidth buffer
Extreme Memory Profile (XMP) to overclock
Max 16 GB

Triple or Quad Channel sometimes

I/O is quadruple clock
Speed is double I/O
PC Speed is 8x speed

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11
Q

DDR4

A

Higher density and lower voltage than 3, faster data rates
288 pin
SO-DIMM 204 pin
Max 64GB

I/O is x8 clock
I/O = Speed
PC is 8x speed

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12
Q

DDR5

A

Includes Power Management Integrated Circuit to deal with power management rather than mb

288 pin
SODIMM 262 pin
Max 256GB

Bandwidth and Speed = Clock x8
PC=Speed x8

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13
Q

Double-sided RAM

A

basically two sticks of RAM smacked together, some mb can’t use

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14
Q

RAM Latency

A

Delay in response time

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15
Q

RAM for Techs

A

Make sure the RAM latency matches the needs of the mb

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16
Q

ECC RAM

A

Error correction code, detects and corrects single bit errors

Can detect but not correct double-bit

Slower than non-ECC

Rare

17
Q

Registered/Buffered RAM

A

Small register added to RAM stick to solve electrical issues

Use one or other not both

18
Q

Working with RAM

A

Very sensitive to ESD

Don’t touch contacts

Make sure the RAM is right for the PC

19
Q

Do I need more RAM?

A

Sluggishness
Excessive hard drive accessing

20
Q

Virtual Memory

A

Use of HDD space for page/swap file

Used when you overtax RAM

“Virtual Ram”

Automatic process for any OS

21
Q

Disk Thrashing

A

excessive HDD use when Windows has to constantly use the page file

22
Q

System RAM Recs

A

32-bit Windows min 2gb, best 4gb

64-bit Windows min 8gb, best 16gb, 32 for high end

macOS min 4GB, 8+ for performance

Linux depends on distro, mostly similar to Windows and macOS

23
Q

Determine current RAM capacity shortcut

A

Win + Pause/Break
(Systems Control Panel applet)

24
Q

Task Manager shortcut

A

Ctrl+Shift+Esc

25
Q

Serial Presence Detect

A

automatically detects installed RAM to set up

26
Q

Service Mode

A

Make sure this is turned on when working on a laptop to ensure battery power is cut off

27
Q

RAM Issues

A

Page Fault
Non-Maskable Interrupt (Blue screen)