As I mentioned in another thread, I wanted 7800X3D, but the huge delay in the release date made me go with Ryzen 7600. Actually, after checking multiple comparisons about how many cores games can use, it's a ~0-5% loss vs 8-16 core options, so I don't care. I won't play at low display resolution trying to pass 200FPS, so it won't make me any difference. I already checked that my CPU can make 5.4GHz on all cores and at about 95-98W, so is perfect for SFF.
I don't know what to think about Samsung SSD. Recent news shows a design flaw in Samsung 990 causing it to show faster than typical degradation. Samsung 980 Pro was failing at work (we had only 8, but 4 went to RMA after a few months). In the same time, I don't have problems with brands like Crucial, Silicon Power or Kingston. I don't say it's a rule, but at least for me, Samsung doesn't look so great. I could still use PCIE 5.0 SSD, just because I want it

I highly doubt I will see any difference compared to PCIE 4.0.