3200mhz CL16 vs 3600mhz CL18 for an Intel CPU?

[ZeekAncient]

So I am using 32gb of 3600mhz CL18 ram for my 10700K. Everything seems to be running fine but I have just been questioning if maybe I would have gotten better performance from 3200mhz CL16 ram with my 10700K.

See the 3600mhz CL18 ram was the ram I was gonna buy when I was seriously looking at getting the AMD 5800X. Considering the whole Infinity Fabric Frequency Clock thing with AMD processors, I was told that 3600mhz ram would operate better with an AMD CPU than 3200mhz.

Finally, when I decided to go with the cheaper 10700K instead, I didn't think twice and I bought the 3600mhz CL18 ram. Afterall, the 3200mhz CL16 were roughly the same price.

But I have been reading some articles that state for AMD go with the higher frequency, while for Intel go with the lower latency. Thus, meaning I would have gotten better performance from 3200 CL16 ram with my 10700K vs. 3600 CL18.

So, those of you that know better and/or have actually done some testing, what is the answer. Would the performance be the same? Or which ram would have been the better option to buy with the 10700K?

Might not really matter as I am not having any performance issues, I don't think. Just curious what the better option would have been.

In hindsight, however, I think I should have spent the extra $35 or $40 and went with 3600 CL16 ram.

[ZeekAncient]

Ursprünglich geschrieben von Illusion of Progress:

It's really going to vary in the real world and from application to application, but I want to say that if the frequency and timings "balance out" in response, I'd personally prefer the higher frequency anyway. If you were asking from a standpoint of nothing, I'd say there's a discussion to be had, but even then it's a wash, and since you already have 3,600 MHz CL18 then changing to 3,200 MHz CL 16 is sort of spending for nothing.

Yea I mean if I were to replace it with 3600 CL14 ram which would equal out to latency of 7.8ns, I guess that would be a big increase over the 10ns latency. But obviously going out and spending $250-300 on ram is not something I care to do. In all reality, I am not gonna go out and replace my ram anyway, obviously. I guess it is just something to consider for a future build. At that point we will probably be talking about DDR5 anyway, but just in hindsight on this last build, I might have just spent the extra $35 and got 3600 CL16 ram. But I am happy nonetheless.

[ZeekAncient]

Ursprünglich geschrieben von ZAP:

Here's an example of an excellent kit with a little headroom to go tighter and higher (DR B-die)
https://www.newegg.com/g-skill-32gb-288-pin-ddr4-sdram/p/N82E16820374149?quicklink=true

That is some really good ram right there. 4000 CL16 with some really tight timings overall. Expensive, but manageable.

[ZAP]

Ursprünglich geschrieben von ZeekAncient:

Ursprünglich geschrieben von ZAP:

Here's an example of an excellent kit with a little headroom to go tighter and higher (DR B-die)
https://www.newegg.com/g-skill-32gb-288-pin-ddr4-sdram/p/N82E16820374149?quicklink=true

That is some really good ram right there. 4000 CL16 with some really tight timings overall. Expensive, but manageable.

1.4V too. When Samsung B-die starts to stretch it's legs at 1.5V.

[r.linder]

There are benefits to going above 3200 on Intel, but it's not really a big difference in gaming, more or less ~10 frames in demanding titles at best and closer to 20 or more in more CPU intensive titles where you can run hundreds of frames

Higher frequency, tighter timings, and more DIMMs are harder on the CPU IMC and motherboard PMIC, so stability can take a hit

[ZAP]

Ursprünglich geschrieben von Illusion of Progress:

To the contrary if anything, as AMD loses benefits much above 3,600 MHz due to the fact that the Infinity Fabric won't run 1:1 too much above that

2000+ fclk is very possible for DDR4 4000+ if you know what to do, especially on Vermeer and Cezanne. B550 Aorus Pro/Master and MSI Unify(X) are the best boards to use.