Should RAM Memory Latencies be equal for 2 RAMs?

alaa_137

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Jul 19, 2013
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It's recommended that if you have 2 RAM Memories, they should be of the same type.
By type I mean Capacity and Speed. Does that also hold for CAS_Latency? (CL9 / CL11 ...).
I have a 4GB (not sure of its Latency), and want to add another 4GB. So I'm wondering if installing a CL9 would be ok, regardless of the one I have.
 

alaa_137

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Jul 19, 2013
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OK. What if it's CL11? Will it be not ok to get the other one CL9?
 

sciamwow

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Jan 9, 2015
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Eh, I wish I knew but sadly I can't answer that
 

toshaga

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Aug 15, 2015
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If you are going to dual channel the RAM it needs to be the same, just as the SLI and CF needs to be the same gpu.
So better get the same RAM.

 

alaa_137

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Jul 19, 2013
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OK. If it's the same everything except the brand, that good?
 

toshaga

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Yes if everything else is same you should be abale to use dual channel.