I have a question concerning CAS-latencies. I checked the sites of Crucial, Infineon, Kingston, Corsair and Mushkin for their memory specs, only Infineon and Mushkin give more information than simply the CAS-latency. Seems that their top-line DDR-2100 RAM has 2-3-3 specs, their ordinary DDR rams has 2.5-3-3 specs.
As I understand it, the difference in CAS-latencies comes only in to play when doing an out-page read and in this case
the RAS-TO-CAS-delay (3ticks) and the precharge-delay (3ticks) also come in to play. So doing an out-page read will cost in CAS2 8 ticks, in CAS2.5 8.5 ticks.
So the question is: is this small decrease worth the extra money and time finding CAS2-memory?
As I understand it, the difference in CAS-latencies comes only in to play when doing an out-page read and in this case
the RAS-TO-CAS-delay (3ticks) and the precharge-delay (3ticks) also come in to play. So doing an out-page read will cost in CAS2 8 ticks, in CAS2.5 8.5 ticks.
So the question is: is this small decrease worth the extra money and time finding CAS2-memory?