Real RAM latency

Posted by user32569 on Super User See other posts from Super User or by user32569
Published on 2011-01-07T00:11:38Z Indexed on 2011/01/07 0:55 UTC
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memory

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latency

Hi, very quick question. When I look for RAM timing, I got 2 different explanations on what is CAS latency. First states, its the time after command to read has been issued from CPU and data are send to data bus.

Second says its time betwen column in memory layout has been activated.

So, where is the truth? I mean, when I want to know total RAM latenci, in case 1, ot would be just CAS times one clock time.

In second case, it would be CAS+other things like RAstoCAS and so times one clock time. Thanks.

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