I upgraded to an AMD 3990 system. I was drawn to the 64 cores / 128 threads, but the first performance test I ran is for IO read speed. Previously, I had my data on an older Intel SATA SSD, which I moved over to the new system. The SATA performance is better even with \
the old drive, getting 506 MB/s with unbuffered IO. Copying the data to the VP4100 M.2 PCIE4 SSD then reads at 4330 MB/s! Using normal buffered IO, the SATA is at 464 MB/s cold, the M.2 is 2410 MB/s cold, and both are 6500 MB/s from file cache. Unbuffered is now a big deal --
nearly doubling speed instead of just 10% difference on initial read, and unbuffered striped over two drives should be faster than copying from the file cache, which is pretty remarkable.
