Not necessarily, it still depends on how low is the CAS latency compared to the RAM speed, you just need to do some calculation on both the RAM timings and the CAS latency together to find the absolute latency of the RAM sticks. Enter the values here for all the RAM that you’re comparing. And choose the one with the lowest Calculated Nanoseconds of absolute latency.
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Yes agree completely - depends on the numbers of course
Ram speed directly impacts cpu performance though, and slow ram. Like 2666
mhz costs you 10-20% vs faster kits…
I know you’re not a fan of xmp, but on a K cpu and Z motherboard, 3600MHz ram is really no issue, should be 100% stable (and if it’s not, just manually down clock it a bit).
It buys you a huge amount of perfomance, and even if you’re ‘cpu limited’ that could be down to your ram!
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I mentioned allways, in all topics, “use it, but have in mind it is OC”. So, no idea about your statement.
may be you miss the point, which was: the diff 3200 vs 3600.
There is never never ever a 10-20% performance increase from 3200 to 3600, may be 1%.
And this was the discussion, not that I own 2666. I just mentioned it to show that the most fancy memory speed is not necessary. Again a example: my system is mostly able to give me in MSFS in near 4K / ultra around 50fps. For me its absolut pointless to get 55fps ( and the limit is the gpu), in special because I had must spend the double price of 3600’er RAM years ago compared to 2666.
And that is the point : hints for a usefull upgrade and not afancy upgrade, only because some people speak about magic prozent values, which translated into real fps then not matter.
But, I would had done the same decision as @anon17491698 and had bought the 3600’er … 20$ is okay for a try.
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My view as well, if all the other digits are the same why not.
If another tenner made them go blinky RGB I’d do that also. 
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I heard about RAM which overheat because of the blinky LEDs on it 
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i went from ~35fps to ~42fps in my typical flights after upgrading 64Gb DDR4-2400 (hyperx HX424C15FB3AK4/64) to 32Gb DDR4-3600 (corsair vengeance LPX CMK32GX4M2Z3600C18)
I’d also vote for the fastest affordable.
Be sure to set XMPP in BIOS when you install it to get full performance.
Be aware some motherboards don’t like some ram, all motherboard manufacturers publish a list of guranteed-to-work ram (it’ll probably work regardless, just noting the risk if it’s not published as supported)
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That’s literally the RAM I bought. Eager to see what happens.
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So the verdict is: GOOD! I have been able to up my settings back to pretty much all ultra, render scaling 115, terrain LOD 215, objects 115, and am getting a very smooth, very steady 30 FPS (locked w/ Vsync). Using about 14-15 GB of RAM, so basically I was limiting myself with 16 GB before.
For $140, I’ll take it.
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Probably irrelevant, but the Xbox series x is 16 GB; the series s apparently only 10 GB