Originally Posted by dejanh
Thanks for the detailed feedback. I took a quick look at the results you posted and that does seem a bit discouraging. I would have expected 2nd generation of chips to be more, not less forgiving of higher speed memory. I have plenty of issues as-is getting 4x16GB dual-rank running at rated 3200MHz CL14. I do need the PCIe lanes since I use a lot of PCIe storage so that generally rules out mainstream platforms like AM4 (this plus multi-GPU setups is the same reason why I stuck with HEDT platforms for a long time). It sounds to me like your advice would really be to save some pennies and stick with the 1950X for the time being and when I decide to upgrade move up to newer generation of TR. I am not keen on blowing $3K on a new TR3 setup at this stage since I do not have a lot of confidence in early boards for the TR platform (the disaster that was 1st gen has me sufficiently weary).
On a positive note, I came across some useful information from one of the Gigabyte forums of somebody who was running the same dual-rank memory as I am and had plenty of trouble getting 3200MHz CL14 rated going on more recent UEFI, and his brute force solution was actually just rooted in bumping SOC voltage to about 1.12V and driving the actual DRAM with about 1.45V each. Doing the same today in my setup allowed me to get a (for now apparently) stable 4x16GB 3133MHz CL14 with the CPU also overclocked to 4GHz. Next I am going to try for 3200MHz. *fingers crossed*
Sorry, I don't watch the thread.
About the new 2001 BIOS, ZE + 2950X
Gskill [Trident Z RGB] F4-3200C16S-16GTZR [DDR4-3200 64GB (16GBx4) ]
3200MHZ 16-18-18-38-56 1.36v, and ProcODT 60Ω, CAD_BUS 24 24 24 24
You see, I just bumping SOC voltage to 1.11250V
and adjust the DRAM voltage with 1.36V
(don't need 1.45V that high) ,
and use this setting, the DRAM stability issues is solved:
DFE Read Training [Enable]
FFE Write Training [Disable]
PMU Pattern Bits Control [Manual]
PMU Pattern Bits 
see this, https://github.com/integralfx/MemTestHelper/blob/master/DDR4%20OC%20Guide.md