Greetings,
Another "age old question": Latency factors into RAM modules in a relationship that is promotional to frequency, what exactly is that relationship?
Let me illustrate:
CL (CAS latency, or Column Address Strobe latency) is rated/measured in clocks cycles, commonly referred to as ‘ticks.’
So a CAS value of 4 means 4 cycles. As RAM increase in performance, the higher the speed, the faster the cycle time. Thus cost effective lower memory speed coupled with a lower CAS value can provide tighter latencies than a RAM with higher memory speeds and “looser” timings.
Here is a chart that someone put together to illustrate the relationships:
http://www.thetechrepository.com/attachment.php?attachmentid=519&stc=1&d=1179277927
Although, the information of this chart is outdated. I would love to see more information on this with perhaps an updated chart... Does anyone know of such a source that talks about the CAS/Frequency relationship and timings?
Another "age old question": Latency factors into RAM modules in a relationship that is promotional to frequency, what exactly is that relationship?
Let me illustrate:
CL (CAS latency, or Column Address Strobe latency) is rated/measured in clocks cycles, commonly referred to as ‘ticks.’
So a CAS value of 4 means 4 cycles. As RAM increase in performance, the higher the speed, the faster the cycle time. Thus cost effective lower memory speed coupled with a lower CAS value can provide tighter latencies than a RAM with higher memory speeds and “looser” timings.
Here is a chart that someone put together to illustrate the relationships:
http://www.thetechrepository.com/attachment.php?attachmentid=519&stc=1&d=1179277927
Although, the information of this chart is outdated. I would love to see more information on this with perhaps an updated chart... Does anyone know of such a source that talks about the CAS/Frequency relationship and timings?