Does it really matter for what we do - rendering - in the end?
For
3rd generation (important), the short answer is:
no :- ) Epycs (Rome), which still run on NUMA when in multi-socket setup, are ok with JEDEC specced 2666 CL19, so you are totally fine.
Long answer: Million youtube videos and Reddit threads how it can help you achieve over 9000 fps, not just 144!
Depending on your motherboard and those particular modules, it might not even be stable at 3000 in 128GB configuration, so you would run it 2933 at best in such scenario.
When on budget, always get more instead of faster. Memory, SSDs, etc..