3900x RAM Scaling vs 9900K - Google Sheets
DOCS.GOOGLE.COM
2080 Ti RAM Latency via Aida64 3900X Memory Speeds,Latency (ns) 3900X - 3800 [Manual],64.4 3900X - 3800 CL16,67.4 3900X - 3600...
Finally found it. Old data and games but oh well.
RAM tweaking is a HUGE part of owning Ryzen and tweaking it, and you can see in the Average All Data in the chart that going from 3600 to 3800MHz with manually tweaked timings can give up to a 9% performance boost. Even going to 3733MHz with highly optimized secondary and tertiary timings would as well, though it's not shown.
I keep a printoff of my ZenTimings and every time I update the bios (and I have a newer board that gets regularly updated) I enter them all in manually, as well as many other settings like disabling Spread Spectrum, setting Digi+VRM settings and fan profile, this is a part of the hobby. I just use a printoff of my ZenTimings blown up large. I keep it by my motherboard manual.
On my Zen 3+ system, my wife's build with my old 5900x, I probably change around 100 settings in various menus on the motherboard and also have a printoff for RAM timings for that one. I change a lot of stuff in the AMD CBS menu like BankGroupSwap, Interleaving size, etc.
Subsequently, that work that is a part of the hobby pays off in the long run. Also, if you're running 5000 series, you shouldn't be needing to BIOS flash and reenter all settings very often, if at all, as x570 has been around for 4 years and they've pretty much optimized it and fixed all the issues with it. They are focusing more on x670e and other chipsets now.
I digress, yes it is a PITA to reenter settings but the payoff is worth it, though less so on Zen 4 than 3000 or 5000 series.
Put in the work. It's worth it. That's my advice.