1066 vs 1333 question

[newbs]

What would be faster 1066 cas 7 or 1333 cas 9? Thanks

 

[iconiK]

1333 CL9. That is the standard most-compatible setting that works everywhere and works fine.

 

[newbs]

umm thanks for the response but that does not address the question at all

 

[drescherjm]

I would say 1333 CL9 would be a little faster in the real world.

 

[E4g1e]

What would be faster 1066 cas 7 or 1333 cas 9? Thanks

It depends on the memory controller. For those first-generation i7s (LGA 1366) and low-end recent Pentiums (Clarkdale G69xx and Sandy Bridge Gxxx series), DDR3-1066 @ 7-7-7 is preferred since the IMCs in those CPUs do not officially support anything faster than DDR3-1066 anyway. But most Sandy Bridge CPUs work better with DDR3-1333 even at 9-9-9 than with DDR3-1066 at 7-7-7 or even 6-6-6.

 

[mhenley]

Most often times, increasing the speed and CAS latency synchronously will provide results somewhere between unnoticable and marginal. Synthetic benchmarking has shown time and time again that the amount of actual memory bandwidth changes so little between the DDR3 speeds because the general turnaround is still about 12 nanoseconds. If you're not limited to only those options, why not get the higher speed AND the lower latency? I'm running OCZ Platinum sticks at 1333MHz @ 7-7-7-20, and I know there are other manufacturers that provide 1333 @ 7's as well.

 

[newbs]

Well this is for a laptop so I am far more limited for choices and I am just replacing the 4gigs with 8gigs and it's only a core 2310m and hopefully very shortly an ssd.