Quoting myself, to add some more results (including the quote's).
12400f+3060ti+Gigabyte Aorus 7000s 1TB (nvme pcie 4.0) = 13.30GB/sec
12400f+3060ti+Crucial MX500 1TB (sata)= 2.05GB/sec
8600k+1070+Gammix S11 pro 1TB(nvme pci 3.0)=1.96GB/sec
8600k+1070+Samsung EVO 850 512GB(sata)=1.91GB/sec
2500k+Radeon 7950+Patriot P210 256GB(sata)=1.34GB/sec
Regarding the 8600k+GTX 1070, son, I'm disappoint. Dunno why, I was expecting better. Maybe because in general these two systems provide me with equal gaming experience, but at different resolutions (different houses). It seems the 1070 is the culprit, but I am having some tiny reservations, because that nvme is on a pcie 3.0 card, which is controlled by the chipset and not the cpu. It benchmarks OK with convensional storage benchmarks though, so I guess it's the gpu.
The MX500 and EVO results, both being sata and so close, I think means that a sata drive is good enough up to a GTX 1070. Also, the MX500 is limited by itself on the 3060ti, while the Gammix is limited by the 1070 I think. I'll see on the next primary gpu upgrade, which will upgrade all systems by one tier up (3060ti goes in the 8600k system etc).
Very surprised with the 2500k+7950 system. I didn't expect it to even run. But it did and it was not too shabby for a 12yo cpu and a 11yo gpu. Also for whatever reason, the avocado scrolling was the smoothest of all systems. Have no idea why.
I tried to run it on the work's i5-8400 system (only igp), but it doesn't even run. GPUz says Direct X 12_1 compatibility while the 7950 is DX12_0, so it can't be it.
Next and final step, will be a GTX 970 testing.