[SOLVED] Which RAM should I prefer (CL vs PC) ?

[Guest]

I'm thinking to buy new RAM (for Lenovo 320 15AST, motherboard is LNVNB161216).
I had 4GB, I need 8GB.
My current RAM is "m471a5143sb1 2400Mhz, CAS (CL) 17, PC19200".

I was looking at two with such specs:
"Crucial [CT8G4SFD8213] 2133 Mhz, PC17000, 15-15-15-36"
VS
"Patriot Signature [PSD48G240081S] 2400 Mhz, PC19200, 17".
First is a bit cheaper, has frequency that no more that baseboard provides, lower latency, but lower PC (also I'm not sure which PC my baseboard provides).

 

[Guest]

Solved here: https://hardwarerecs.stackexchange.com/questions/9351/which-ram-should-i-prefer-cl-vs-pc

 

[Guest]

Better go for 2400 MHz one. Latency difference is very small, but clock is 12.5% faster.