Unbuffered memory
Encyclopedia
Unbuffered memory is RAM
where there is no hardware register
between the memory controller
and the RAM chips. Unbuffered memory is the opposite of registered memory
. Registered memory is more stable, one clock cycle slower, and more expensive than unbuffered memory. Registered memory is usually used in servers and workstations, while normal PCs usually use unbuffered memory.
Some high-end hardware, such as servers, require the use of registered memory.
In the past, registered memory
was called buffered memory and unregistered memory was called unbuffered memory. Registered memory got renamed in common use, but unbuffered memory did not.
Ram
-Animals:*Ram, an uncastrated male sheep*Ram cichlid, a species of freshwater fish endemic to Colombia and Venezuela-Military:*Battering ram*Ramming, a military tactic in which one vehicle runs into another...
where there is no hardware register
Hardware register
In digital electronics, especially computing, a hardware register stores bits of information, in a way that all the bits can be written to or read out simultaneously.The hardware registers inside a central processing unit are called processor registers....
between the memory controller
Memory controller
The memory controller is a digital circuit which manages the flow of data going to and from the main memory. It can be a separate chip or integrated into another chip, such as on the die of a microprocessor...
and the RAM chips. Unbuffered memory is the opposite of registered memory
Registered memory
Registered memory modules have a register between the DRAM modules and the system's memory controller. They place less electrical load on the memory controller and allow single systems to remain stable with more memory modules than they would have otherwise...
. Registered memory is more stable, one clock cycle slower, and more expensive than unbuffered memory. Registered memory is usually used in servers and workstations, while normal PCs usually use unbuffered memory.
Some high-end hardware, such as servers, require the use of registered memory.
In the past, registered memory
Registered memory
Registered memory modules have a register between the DRAM modules and the system's memory controller. They place less electrical load on the memory controller and allow single systems to remain stable with more memory modules than they would have otherwise...
was called buffered memory and unregistered memory was called unbuffered memory. Registered memory got renamed in common use, but unbuffered memory did not.