System Memory 3.2 Flashcards
used to load applications and files into a non persistent and fast storage area
Random Access Memory (RAM)
High speed memory
Cache
Mass storage device that holds more data but is slower than a cache
Storage
permanent storage area
Mass Storage Device
Temporary storage area / non persistent storage
Random access Memory (RAM)/ system memory
Pulls the files from the disc into memory and replaces the old file
Disk Cache
uses an electronic system that can access the RAM with instant speed
Mechanical system
Processor reaching the files inside RAM
Addressing Memory
put any size of module in any slot
Single bank
Calculated based on the bus speed and the width of the data bus
Throughput
Requires installation of banks in pairs
Paired Bank
Most common type of memory
Dual Data Rate
Oldest type of memory that requires frequent refreshing
Dynamic RAM (DRAM)
First memory module that operates at the same speed as the motherboard
Synchronous DRAM (SDRAM)
Doubles the transfer speed of an SRAM module
Double Data Rate Synchronous Dynamic Random Access Memory (DDR SDRAM)
- Higher latency and has faster access to -the external bus
- Speeds 4.2 GB/s
Double Data Rate 2 Synchronous Dynamic Random Access Memory (DDR2 SDRAM)
- Runs at a lower voltage and at a higher speed than DDR2
- Speed 10.6 GB/s
Double Data Rate 3 Synchronous Dynamic Random Access Memory (DDR3 SDRAM)
Uses two different memory modules to increase the performance and throughput
Multi-channel memory
- Uses one memory module on one bus
- 64 bit data bus
single channel
Requires 2 memory modules and 2 memory slots on the motherboard
- runs 128 bit data bus
Dual Channel
uses 3 memory modules and 3 memory slots
- runs 192 bit data bus
triple channel
- uses 4 memory modules and 4 memory slots
- runs 256 bit data bus
quad channel
Give faster speeds and add memory for storage
Multiple modules
standard memory that doesn’t check for errors and allows data to be put in or taken out
Non-Parity Memory
Performs basic error checking and ensures the memory contents are reliable
Parity Memory
detects and corrects an error
Error Correcting Code (ECC)
Additional hardware between memory and CPU
Buffered / Registered memory
supports ECC modules
Motherboard
has an internal error checking for its modules
DDR5
Space on a hard drive that is allocated by the OS and pretends to be memory
Virtual memory / Page File
A file that is hidden on a storage device and pretends as system memory
Page File / Swap Space
