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Beau L.

Q. visitor asked, I have been out of the PC building business for about 10 years....looking for laptop memory..in the designation 9-9-9-24 what are the last 9 and the 24 ? CAS latency?

Spencer J.
Hello, welcome to newegg!
I have been out of the PC building business for about 10 years....looking for laptop memory..in the designation 9-9-9-24 what are the last 9 and the 24 ? CAS latency?
Spencer J.
last 9 is tRAS: Active to Precharge Delay. How long the memory has to wait until the next access to the memory can be initiated.
and 24 is CMD: Command Rate. The time it takes between the memory chip having been activated and when the first command may be sent to the memory. Sometimes this value is not announced. It usually is T1 (1 clock cycle) or T2 (2 clock cycles).
ok thanks
Spencer J.
You're welcome. :-)
so ...CAS is first 9 ?
Spencer J.
Right
is it still the definitive metric for performance ?
Spencer J.
Yes it is, better (lower) timings is always a good thing to look at when going for performance.
ok thanks for your help
Spencer J.
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