Question What is the difference between CL 19 and CL 19-19-19 in ram?

[rahulpkamath1997]

I want to purchase a ram stick, I am not sure of my current installed rams CAS Latency, but i know its got 19 as the first number. Online i found two ram sticks, one says CL19 and the other says CL 19-19-19. Dont know which to pick. Please help
Thank you

 

[boju]

https://www.cpuid.com/softwares/cpu-z.html

Run cpuz and look under memory tab. There is your memory speed and timings.

 

[hotaru251]

also iirc speccy tells you your ram timings

 

[rahulpkamath1997]

https://www.cpuid.com/softwares/cpu-z.html

Run cpuz and look under memory tab. There is your memory speed and timings.

Had a look, little confused about what these other timing values mean. It still doesn't really clear my original question. Can you have a look please.

 

[boju]

Your ram there is 19 19 19 43 or CL 19. 1330 single data rate times 2 = 2666MHz double data rate (DDR).

Any ram you buy, match those four numbers, speed and voltage.

 

[rahulpkamath1997]

Your ram there is 19 19 19 43 or CL 19. 1330 single data rate times 2 = 2666MHz double data rate (DDR).

Any ram you buy, match those four numbers, speed and voltage.

Ok great, that clears stuff. But here's the thing. I am looking at this RAM stick: ADATA Premier 2666 Mhz SO-DIMM DDR4 8 GB (Dual Channel) Laptop SDRAM (AD4S266638G19-R).
According to its specs, everything checks out. Its got that same CL 19-19-19 config, but i could not find anything regarding that final tRAS 43 cycle time. Checked all over the net. So you reckon the tRAS is standard or should i worry about it?

 

[boju]

Yeah tRAS 43 is standard for CL19. Usually i see all four numbers specified but guess it's not required.

Ie, searching other CL19 2666 memory.

https://www.microcenter.com/product...-channel-so-dimm-memory-kit-f4-2666c19d-16grs

 

[rahulpkamath1997]

Yeah tRAS 43 is standard for CL19. Usually i see all four numbers specified but guess it's not required.

Ie, searching other CL19 2666 memory.

https://www.microcenter.com/product...-channel-so-dimm-memory-kit-f4-2666c19d-16grs

Thanks man 👍