Here is an update with the memory upgrade.  It was somewhat disappointing...  I was only able to get 26 H/S for my threadripper 1950X with the quad channel and yet my dual channel ram was getting 28 H/S.  What is interesting is i then tried 8 sticks (4GB each) of dual channel ram at a much lower speed b/c stock speed would not boot, I was able to gain 1 more H/S (29 H/S). I was able to boost to +2 H/s (30 H/S) at a higher clock speed but my system crashed after an hour.  This coin is depended on memory performance!  I am no overclocker so I am up for tips.  These 8 sticks of 4GB are running at 3066 MHZ, but are rated for 3600 and I boosted to voltage to 1.45V (stock is 1.35V).

quad channel memory
https://www.newegg.com/Product/Product.aspx?Item=N82E16820232492

dual channel memory (current winner)
https://www.newegg.com/Product/Product.aspx?Item=N82E16820231907


Results for 8 sticks of dual channel memory, 4GB each at 3022 MHZ.
 Streams  Runs H/run Cur H/s Cur TiC%  Cur WL%  Argon %    Sha %  Shares Finds Reject
      16    34     9   29.34    92.10    0.000   99.995    0.001      10     0      0
      16    35     9   29.53    91.82    0.000   99.995    0.001      10     0      0
      16    35     9   29.30    92.57    0.000   99.995    0.001      10     0      0
      16    36     9   29.27    91.22    0.000   99.995    0.001      10     0      0
      16    35     9   29.53    90.89    0.000   99.995    0.001      10     0      0
      16    35     9   29.70    92.57    0.000   99.995    0.001      10     0      0


Also I am running GPUs mining another coin on this rig, so if you remove this from your setup, you might be able to run the memory at the higher speed for the extra 1/2 H/S.  Balancing GPU, CPU and system memory is an art!