Upgrade to remove ads
Ch. 5: RAM ***
Terms in this set (59)
What is SDRAM?
(Synchronous Dynamic RAM) DRAM that is synchronized with the system clock. Used in modern systems.
What was the most common desktop pin size for SDRAM?
What is DIMM?
(Dual Inline Memory Module) 32 or 64 bit type of DRAM where each side of each tab inserted into the system performs a separate function.
What sizes do DIMMs come in?
184, 240, and 288-pin
What is SO-DIMM?
(Small-outline DIMM) Memory used in laptops due to its small size.
What is DDR SDRAM?
(Double Data Rate RAM) Type of DRAM that makes two processes for every clock cycle.
DDR for desktops come in what size?
DDR for laptops come in what size?
200-pin SO-DIMM or 172-pin micro-DIMM
What is the calculation from DDR clock speed to PC speed rating?
- Clock Speed x 2 = DDR speed rating
- DDR Speed Rating x 8 = PC Speed Rating
What is DDR2 SDRAM?
Type of SDRAM that increases speed to 4 bits by clock doubling the input/output circuits on the chip. Uses less power.
DDR2 for desktops comes in what size?
DDR2 for laptops comes in what size?
What is the calculation from DDR2 clock speed to PC speed rating?
- Clock Speed x 2 = DDR I/O Speed
- DDR I/O Speed x 2 = DDR2 speed rating
- DDR2 Speed Rating x 8 = PC Speed Rating
What is DDR3 SDRAM?
Type of DRAM that transfers data at double the rate of DDR2 (from 4 bits to 8 bits).
DDR3 for desktops comes in what size?
DDR3 for laptops comes in what size?
What is the calculation from DDR3 clock speed to PC speed rating?
- Clock Speed x 4 = DDR I/O Speed
- DDR I/O Speed x 2 = DDR3 speed rating
- DDR3 Speed Rating x 8 = PC Speed Rating
What is Parity RAM?
Earliest form of error-detecting RAM that stored an extra bit (parity bit) to verify if data was correct.
What is ECC RAM?
(Error Correction Code RAM) RAM that uses special chips to detect and fix memory errors. Usually used in high-end servers.
What is the difference between ECC RAM and and non-ECC RAM
ECC RAM is slower than non-ECC RAM.
What is the difference between single, double, and triple-channel architecture?
Single can only hold one stick of RAM, double can hold two sticks, and triple can hold three.
What is double-sided RAM?
RAM stick with chips soldered to both sides.
What is single-sided RAM?
RAM stick with chips on only one side.
What is buffered/registered RAM?
A chip that acts as a buffer between the DIMM and memory controller. Works as cache. Seen in high-end systems with lots of memory (such as servers).
What is unbuffered RAM?
RAM without a buffer chip, or consumer-grade RAM.
What is Virtual Memory?
Portion of the hard drive used by Windows to act like RAM. Uses page/swap files to free up space. (1.5x size of RAM)
What is ReadyBoost?
A feature of Windows Vista and later that enables the use of a flash drive as virtual memory.
How many devices can Windows Vista designate as virtual memory?
How many devices can Windows 7 and up designate as virtual memory?
What is a bank? *
An empty/ open slot of ram.
What is RDRAM *
(Rambus DRAM) Works at 800 mhz, designed for machines that worked at 400, also known as a RIMM.
Can you insert RAM into the incorrect spot?
What are the min/max system speed for DDR?
100 - 300MHz
What is Dual-channel architecture?*
When two sticks of RAM are inserted correctly into the motherboard. Optimized to be used efficiently, used only in DDR3 RAM
DDR3 uses which channels?
triple and quad-channel architecture.
What is XMP?
(extended memory profile) Allows user to overclock RAM
Which chip is triple-channel architecture supported by?
Intel LGA 1366 chip (not supported by AMD). All 3 slots must match.
What is the min/max system speed for DDR2?
100 - 266MHz
What is Latency?
The amount of clock cycles it takes the RAM to reset itself.
Which latency is faster: CL6 or CL9?
Double-sided dimms contain how many bits?
128 bits (64 on each side)
How much RAM is recommended for a 32-bit Windows system?
How much RAM is recommended for a 64-bit Windows system?
How much RAM is recommended for OS X?
What are two ways to check the CPU speed and memory on your computer?
The performance tab on task manager, or by using cpu-z.
What is SPD?
(Serial presence detect) technology that detects and automatically sets up installed DIMM.
What are the steps when installing SO-DIMM?
Power off the laptop, unplug, and remove battery pack, then follow esd procedures.
What is a real parity error?
Errors that the MCC detects from the parity or ECC chips (if available).
What is a phantom parity error?
Shows up on a system that doesn't have parity or ECC memory.
If the generated parity errors have different addresses, it's not a problem with RAM.
What can cause a phantom parity error?
Software problems or heat/dust.
What is a system lock-up?
When the computer stops functioning.
What is a page fault?
Minor memory-addressing error.
What can be considered a possible cause for a Page fault or system lock-up?
The RAM (might not necessarily be the cause, but could be considered).
What is a Non-maskable interrupt (NMI)?
Interrupt code sent to the processor that cannot be ignored.
What can cause a Non-maskable interrupt?
CPU and RAM, or possibly power supply. Ram could be corrupted or CPU can be overheating.
What is a proprietary crash screen?
A screen that indicates a NMI.
What is the blue screen of death? (BSoD)?
Error screen that appears when Windows encounters an unrecoverable error.
What is the pinwheel of death?
Mac OS X indicator that represents an unresponsive application with a spinning rainbow wheel.
What does the Windows Memory Daignostic do?
Tests for the integrity of the RAM.
THIS SET IS OFTEN IN FOLDERS WITH...
Ch. 4: Microprocessors ***
Ch. 17: Troubleshooting Operating Systems **
Ch. 16: Working with the Command-Line Interface
Ch. 3: The Visible Computer
YOU MIGHT ALSO LIKE...
Comptia A+ Chapter 6
A+ hardware chapter 5
Chapter 5 Ram (Quiz)
OTHER SETS BY THIS CREATOR
Chapter 28 - Key Terms
Chapter 27 - Key Terms
Chapter 26 - Key Terms
Chapter 25 - Key Terms