Install and Configure System Memory Flashcards
3.2 Given a scenario, install the appropriate RAM.
If there is not enough system RAM, the memory space can be extended by using disk storage. What is this called?
pagefile or swap space
The total amount of addressable memory (system RAM plus swap space) is referred to as this
Virtual RAM/memory
The OS assigns memory locations to processes in 4 kilobyte chunks called this
Pages
determines how much information can be transferred per clock cycle when looking at the bus between the CPU, memory controller, and memory devices
Width of the data pathway
In a single channel memory controller configuration,
how wide is the data bus usually?
64 bits wide
determines how many memory locations the CPU can keep track of and consequently limits the maximum possible amount of physical and virtual memory
The width of the address bus
How much address space can a 32-bit CPU with a 32-bit address bus access?
4 GB
Most 64-bit CPUs use a 48-bit address bus; how much address space does it have?
256 TB
Type of RAM where the speed is synchronized to the motherboard system clock
Synchronous DRAM (SDRAM)
Type of RAM where the speed consists of making two data transfers per motherboard system clock cycle
Double Data Rate SDRAM (DDR SDRAM)
Memory module form factor used in laptop computers
Small Outline DIMM (SODIMM)
memory architecture where there is one 640bit data bus between the CPU, memory controller, and RAM devices
single-channel memory
memory architecture where there is two 64-bit pathways through the bus to the CPU, meaning that
128 bits of data can be sent per transfer rather than 64 bits
Dual-channel memory
Used for workstations and servers that require a high level of reliability; can detect and correct single-bit errors and allow the PC
to continue functioning normally; an also detect errors of 2, 3, or 4 bits but cannot correct them. Instead, it will generate an error message and halt the system.
Error correcting code (ECC) RAM
Consulting the vendor documentation, you find that this system uses DDR4 error-correcting code (ECC) RDIMMs. The spares you have are DDR4 ECC UDIMMs. Can they be used for the upgrade?
No. If the vendor documentation specifies registered memory (RDIMMs), you must use RDIMM modules. Unbuffered DIMMs (UDIMMs) will not be compatible even if they are ECC.
