Random Access Memory (RAM)
DIMMs stand for
Dual Inline Memory Module
Double Data Rate (DDR) uses
rising and falling edges of a clock signal to send data
8 bits =
1 byte
the "100" in PC-100 refers to
100 MHz
SDRAM's speed was
133 MHz
DIMM has either _____, _____, _____, or _____, pins
168, 184, 240, 288
How many pins do RIMMs have?
184
RDRAM only had a ___ byte wide bus
2
How many pins does DDR2 have
240
How many pins does DDR3 have?
240
How many pins does DDR4 have?
288
SIMMs have a _____ bit data path
32
DIMMs have a _____ bit data path
64
In a Non EEC RAM module, there are ___ memory chips
8
SDRAM had an ___ byte wide bus
8
64 bit data path equals
8 byte wide bus
RDRAM's speed was at
800 MHz
In an EEC RAM module, there are ___ memory chips
9
DDR stands for
Double Data Rate
What does EEC stand for?
Error Correcting Code
RIMM stands for
Rambus Inline Memory Module
What RAM is used today in RAM DIMMs
SDRAM
RIMMs was considered
a breakthrough in the speed of memory
DRAM operates
asynchronously with the system clock (slower than a system clock)
How many, slots, on average, do motherboards have?
between 2 and 4
Sometimes there are circumstances where memory data corruption
cannot be tolerated
EEC makes a _______ if it needs to
connection
RAM requires ______ electrical power to store data
constant
Error Correcting Code (EEC)
detects if the data was correctly processed by the memory module
What does DRAM stand form
dynamic RAM
Capacitors have to be
dynamically refreshed often so they will not forget information
(T/F) DDR, DDR2, DDR3, DDR4 are interchangeable as far as being supported bt the motherboard
false
(T/F) Most RAM Modules today are EEC
false
(T/F) SDRAM does not have capacitors like DRAM
false
DIMMs are ______ than SIMMs
faster
SDRAM is _____ than DRAM
faster
DDR2
faster than DDR because it allows for higher bus speeds
SDRAM operates
in sync with the system clock
Where is DIMM installed on the motherboard?
in the memory slots
DIMM is a dual inline module because
it has two independent rows of pins (one on each side)
In order for a program to run,
it needs to be loaded into RAM first
Increasing the RAM in a computer can
make the computer faster
Dynamic RAM (DRAM)
memory that contains capacitors
RAM is stored
on the motherboard in modules called DIMMs
Random Access Memory (RAM)
primary memory, temporary storage
What does Double Data Rate (DDR) do?
sends double the amount of data in each clock signal
EEC RAMs are mostly used in
servers
Why are EEC RAMs mostly used in servers?
servers must be up and running at all times
Capacitor
small bucket that stores electricity and holds information (such as binary codes)
What does SDRAM stand for?
synchronous dynamic random access memory
Why are there more non EEC RAM modules today?
technological advances minimized memory errors
DDR may include both
the clock speed and the total bandwidth in its name
The more bits that are transferred in one clock cycle,
the faster the computer will be
The term 64 or 32 bit data path refers to
the number of bits of data that are transferred in 1 clock cycle
1 bit of data is
the smallest form of data that the computer reads
MHz (Megahertz)
the speed at which a PC operates
In SDRAM, all signals are
tied to the system clock for a better controlled timing
(T/F) Capacitors do not hold charge for very long and must constantly be charged
true
(T/F) DDR2 uses less power than DDR
true
(T/F) DDR3 uses less power than DDR2
true
(T/F) DDR4 is faster than DDR3
true
(T/F) DDR4 uses less power than DDR3
true
(T/F) RIMMs look similar to DIMMs
true
(T/F) SIMMs are largely discontinued
true
DDR2 sends _____ the amount of data than DDR
twice
DDR3
twice as fast as DDR2
Non DDR (Single Data Rate)
uses only the rising edge of a clock signal to transfer data
To figure out the total band witdth of PC-100
you multiply the MHz and the bytes and figure out the megabytes per second (MB/s)