I paired the Ryzen 5 3600 with an Asus Prime X470-Pro, and spent slightly more on the RAM compared to an ordinary 3200MHz CL16 set: I went for a Corsair Vengeance LPX kit at 3600MHz CL18-22-22-42.

My online research has found till now that everyone with hynix chip (RAM version 5.39) have the Intel optimized(B) module while those who owns the samsung b-die (RAM version 4.31) have the AMD Optimized(Z) module.I left out some of my early tests, and all the failed tests. I tried tweaking every timing up to row 39 'power down enable', but those last ones I couldn't get to work without spawning errors.

If you're building a Ryzen machine, it might be a better idea to get CMK16GX4M2Z3200C16. I'd recommend just getting a 2x8 kit and running it in Dual Channel mode.I tried getting tRCDrd under 19, but I can't get the system completely stable, even after cranking up the voltage to 1.4V which the calc suggests as max. I can try to reduce CL to 15 or 14. I haven't tried anything lower than 16 so far. Any other timings I could focus on?

What's the deal with the tRCDrd? How could I get it from 19 to the suggested 17. A higher voltage? Or do the other mentioned voltages in the calc play a role? There's no way to get gear 1 working. I get the occasional boot with 3600 G2 but it's not stable. Tried auto SA voltage and manual. It's a theory that may seems reasonable but I cannot confirm for sure in any way and would be interesting to understand the difference.But does that 30% difference really translate to something humanly noticeable? We've all had the "wow a NVMe drive is 7 times faster than a SATA drive!" but then had the crushing disappointment of it feeling in 99% of cases just like the old SATA it replaced. I've used this motherboard before with Intel 12th gen and 64GB DDR4-3600 was not an issue then but the same doesn't go for Intel 13th. First of, next to the Ryzen DRAM Calc I also found some useful info and suggestions here and here. Maybe it can help someone else...

After reading up on RAM OC'ing a bit, I found the DRAM Calculator for Ryzen on TPU. Helpful tool, definitely! To figure out which chips are on the DIMMs, I used Thaiphoon Burned. It tells me it has Micron E dies. Blowing a little dust of this topic, cause I think I've reached the end of the line on tinkering with my RAM timings. The CMK16GX4M2B3200C16 seems to be optimized for Intel boards. It runs at a slightly higher voltage than the CMK16GX4M2Z3200C16 and supports XMP 2.0. The CMK16GX4M2Z3200C16 appears to be optimized for Ryzen. Most likely, but temperature dependent. I run 1.40v and never break 40-42C, but different case environments can produce vastly different results.Now, what bothers me is that the timings in column BG have the highest score for the x264 test. I did further tweak some other timings, which resulted in a faster Membench run, but lower fps for x264 encoding. That's kinda contradictory... The best high-performance systems look as good as they run. VENGEANCE LPX is available in several colors to match your motherboard, your other components, your case — or just your favorite color.