Is this typical for a Gen5 NVME SSD in Fedora? It is in a gen5 slot on the motherboard and everything in bios seems ok.
CT2000P510SSD8 specs:
I suspect you are measuring the performance of a File System on your drive, not the raw drive performance.
Also you need to read the small print of how the performance is measured.
Back in the day I was choosing SSD for a commercial product.
I needed to get into the details of how drive endurance was measured and to make sure that each manufacturer was using the same part of the JDEC spec.
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From this review, the drive seems to have variable write performance according to the state of its cache. So the result you get is probably quite sensitive to the nature of the test:
The P510 writes at over 9.1 GB/s for over 7 seconds in the fast, single-bit cache mode. The cache, as a result, is probably only around 67GB, which is absolutely tiny for a 2TB drive.
…
After the cache is exhausted, the drive drops down to 2.1-2.2 GB/s. This sounds slow compared to the cache speeds, but it is actually pretty decent for a four-channel drive. It remains in this state for quite a long time before jumping up to an average of just over 4 GB/s, which is very fast. This is quite curious behavior, as normally the drive would drop to an intermediate direct-to-TLC mode first before eventually folding with moments of cache availability.
Marketeers have discovered that many will NOT bother to determine that an NVMe SSD without dram is all but useless due to SLOW speeds.