Question about buying RAM

[Dr. Prop]

I am looking to get 32 GB of GSkill RGB DDR4 ram, but I am trying to understand the best way to narrow down the remaining choices with respect to RAM speed and RAM timings. An old but respected forum post used by fans of Microsoft Flight Simulator X (https://www.simforums.com/forums/the-fsx-computer-system-the-bible-by-nickn_topic46211.html) suggests that lower speed RAM with smaller timing values can be preferable to RAM with a higher speed but higher timing values. Is this correct? 

 

What is the best way to narrow down the remaining possibilities from this list assuming they are all within my budget: https://www.gskill.com/en/finder?cat=31&prop_2=32GB+(8GBx4)&prop_6=0&prop_3=0&prop_4=0&prop_1=0&series=2860&p=2 ?

[Airdragonz]

That is correct to a certain extent. There is typically a balance point for ram speeds and latency. Obviously a 4200mhz stick with a C19 will almost always outperform a 2400mhz stick with a C10 latency timing. Based on experience, at least with Intel CPUs, the sweet spot is around 3000-3200mhz. Based on the list you linked, I'd go for the 3200 C14 set. 

[Srnewbee]

simple formula bro.

 

frequency/ cas latency = ram's true speed

But you can only use this when you are comparing rams of the same generation. So you cannot exactly compare dd4 to the older generations.