Corona 1.3 Bench only 1:20s with 2990wx OC to 4.0?? What??? Slow!

[nickmilitello]

So I have a 2990wx overclocked to 4.0.  Was noticing that it is about the same render time as my 1950x.  So did the Corona bench 1.3 test and got a time of 1:20s???? What is going on??  I have seen quite a few people with 37-39s for their times.

I am water cooled with 32 GB  (2 x 16gb) ram at 2133 (I know it can go higher but didnt think it would restrict that much) Using the ASUS X399 ROG STRIX E Gaming MB.

Overclocked to 4.0 running voltage at 1.4.

Please any thoughts on where this is going wrong??  The odd part is im getting 5800 or so Cinebench with 2990wx so it seems like it does work in that regard.

[sprayer]

it  may ram speed issue
https://www.overclock.net/forum/225-hardware-news/1642762-phoronix-ddr4-memory-scaling-ddr4-3600-testing-amd-threadripper-linux.html
also you maybe placed planks in wrong slots, not dual channel or low speed slots, you should write config or read manual yourself for motherboard

[nickmilitello]

Checking the slots now.  I am using 2133 DDR4.  Can that really be the cause of a dramatically reduced Corona render speed?

What ram module would be the best to get if so to get within the 37 sec range?

[danio1011]

With my 1950x I tested it in single, dual and quad channel mode.  Single was obscenely slow (I forget but something like 30% slower or something), dual was sort of expectedly faster than single, and quad was right on target with the majority of benchmarks.  I wonder if you’re accidentally in single despite having two dimms.

[nickmilitello]

yep it was 4 dimms...  put 4 3200 DDR4 instead of the 2 2133 and it went from a 1:20 benchmark to 0:37!  Im sure the ram speed had something to do with it as well.  Thanks all very much for the info!!