Mine Samsung 970 EVO Plus 1TB never worked as I expected.
Performance are always below expectations and benchmarks show that.
Because I had experience only with Samsung SSD and M.2 I must say this is the first time I had a problem and I know the culprit is Samsung's NVMe M.2.
When I asked Samsung for RMA they were very reserved and I continue to use 970 EVO Plus because I want only one confirmation. That's using on another system. Because of that I will wait DDR5 platform.
If the performance of 970 EVO Plus 1TB continues to be slower and below expectations, I will RMA, Refund or replace and pay an additional price for the newest model probably PCI-E 4.0. I don't care.
All of these benchmark tests are below specifications, far below specifications, but last is after Firmware update.
How to revert Firmware? Where to Download Default firmware 1Bxxxxxx?
I strongly suggest to Samsung to launch new firmware and fix problems with different results.
How the same drive could be so much different from sample to sample on systems with the same PCI-E x4 Gen 3.0 speed.
I tolerate this only because my motherboard is X99, first with M.2 slots.
But she has everything necessary for Gen 3.0 NVMe to work in full speed in specifications.
Who knows why this is good, maybe I RMA and pay an additional price for Samsung Gen 4.0 one day after RMA.
I don't have newest system, X99, GTX1080Ti, 2666 DDR4, 850 EVO, CORSAIR 120 GT, etc... Every single piece of hardware in User Benchmark tests is Performe Above Expectations or Performe Way Above Expectations... except Samsung 970 EVO Plus, he Performe Below Expectations.
And that's not my system, it's sample of 970 EVO Plus.