Dear Friends I need help. Is the following combination compatible? What will be the maximum write and read speed I will get, AS MegaBytes? I will be glad to hear for your comments.
2- Alfais 4390 M.2 Nvme Ssd Ngff To Pcie 3.0 X16
Expectation ? Write: about 5000 MB/S Read : about 6000 MB/S
The NVMe drive you list has a PCIe 4.0 connection with four lanes although your riser and slot are only PCIe 3.0 so you'll be limited to Gen 3 speeds.
According to Wikipedia, the expected throughput for a PCIe Gen3 x4 connection, you can see up to 3.938 GB/s speeds. Note that this is maximum throughput, you will most likely never see those speeds due to the overhead of the protocol and going through the operating system.
https://en.wikipedia.org/wiki/PCI_Express#History_and_revisions
