Question RAM choices

Jun 14, 2021
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My notebook had two RAM modules with identical specs except for the capacity and the CL bit:

4 gb (CL11 [11-11-F3]): Kingston ACR16D3LS1NGG
2 gb (CL11 (11-11-11]): A-Data AM1L16BC2P1-B1FS

It was a bit slow so I replaced one of the modules with an 8gb (CL11[11-11-11]) module: Crucial CT102464BF160B

I found the 8gb and 4 gb combination to be an improvement but not great, so I tried an 8gb and 2gb combination and found that to be considerably better.

Was it the CL rating that affected the performance, and can you please explain it to me?

Thanks.
 

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