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Cas latency help...

post #1 of 3
Thread Starter 
Okay, so I am looking at RAM. Everywhere from CL 9 to CL 11 2x 8GB DIMM's 1600.
What difference is there between 11, 10 and 9 CL?
post #2 of 3
Tighter timings means faster RAM. But with newer CPUs, SSDs and in particular gaming, you will not see much of a difference. In video encoding you may shave a few seconds.
 
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BitoHeaven
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post #3 of 3
From what I understand think of cas latency as a comparative rating of how fast your ram is able to respond to requests to retrieve stored data at its rated frequency comparable to the processor bandwidth.

Just because system ram has a lower cas does not always mean the over all CPU and bus can take advantage of it in every memory operation.

In most operations you should not on similar systems have a perceivable difference in overall speed between dual channelling 1600 cas 11, to cas 9 ram except when benchmarking. The other times you could see a difference would be under large time consuming processing operations. The larger and longer processing time projects on the same system but with different cas time would finish typically faster on a smaller number cas ram. The increase would be more perceptible the longer the processing would take.

For example a processing project that takes 1 minute to complete might finish a second or fraction of a second faster. But something that takes 30 minutes to process could finish a full minute or so faster.
Edited by drufause - 12/5/12 at 12:27pm
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