Thank you that was very helpful!
One quick other follow up question:
The PCIE lanes for the two M.2 drives, are they shared? I can install a second M.2 drive while I am upgrading the RAM, but my question is if it matters on the read/write speed of the M.2 drive. If it is capped because the lanes are shared, then I do not need to buy a high performance M.2 drive
e.g. the Samsung 990 PRO NVMe™ M.2 SSD with speeds up to 7.450 / 6.900 MB/s
https://www.samsung.com/de/memory-storage/nvme-ssd/990-pro-4tb-nvme-pcie-gen-4-mz-v9p4t0bw/
vs
the Crucial P3 Plus 2TB PCIe M.2 2280 SSD with speeds up to 5,000/4,200MB/s
https://www.crucial.com/ssd/p3-plus/CT2000P3PSSD8