ram latency and speed

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RAM latency

A delay in transmitting data between a computer's RAM and its processor. Since RAM is not necessarily fast compared to the computer's processor, RAM latency can occur, causing a delay between the time a computer's hardware recognizes the need for a RAM access (initiates a request for data) and the time the data or instruction is available to the processor. If the CPU requests data that is not stored in the cache, then it will have to wait for the RAM to retrieve the data, opening the door to latency problems.

RAM Speed - Speaks pretty much for itself...the speed at which the RAM is going. Higher the speed...faster the the better really..For example, 100mhz...133mhz..etc.
 
Tinneth said:
RAM latency

A delay in transmitting data between a computer's RAM and its processor. Since RAM is not necessarily fast compared to the computer's processor, RAM latency can occur, causing a delay between the time a computer's hardware recognizes the need for a RAM access (initiates a request for data) and the time the data or instruction is available to the processor. If the CPU requests data that is not stored in the cache, then it will have to wait for the RAM to retrieve the data, opening the door to latency problems.

RAM Speed - Speaks pretty much for itself...the speed at which the RAM is going. Higher the speed...faster the the better really..For example, 100mhz...133mhz..etc.

Good post. :afro:

Another thing about speed and latency, is that they're usually a trade off. ie, Sometimes, in order to get a higher ram speed, you need to sacrifice latency by loosening up your timings. Sometimes it's worth it, sometimes it's not.
 
When they report latency by a string of numbers (2-2-2-5) then it is listing the delay for each proccess the memory does before it starts over.

When they refer to CL2 or CAS 2.5 then they are only refering to the first number in the series.
 
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