Once I realized this, I had two ways to fix the issue. This smaller capacity SKU has lower write performance than the 1TB or upcoming 2TB models. Keep in mind that this is only the 500GB size of the Samsung 980 PRO. The Samsung 980 PRO is my boot drive, and it is in the M.2 slot closest to the CPU. That high queue depth makes NAND storage look better. Here they are from the fastest to the slowest. I did some quick and dirty I/O testing of these six drives with CrystalDiskMark 7.0.0.
#Crystal mark diskmark driver
Finally, the Intel Optane SSD is using the Intel NVMe driver version 5.1 Some Quick Comparative CrystalDiskMark Results in 2020 Samsung has not released an NVMe driver for the Samsung 980 PRO, and I don’t think they are planning on it. The Samsung 980 PRO is using the Microsoft NVMe driver, while the Samsung 970 EVO Plus drives are using the Samsung NVMe driver version 3.3.
500GB Samsung 980 PRO M.2 PCIe 4.0 NVMe SSD.There are three M.2 PCIe NVMe SSDs, one AIC PCIe NVMe SSD, one 2.5″ SATA SSD, and one 3.5″ SATA HDD. PCIe 4.0 has twice the bandwidth per lane compared to PCIe 3.0. The latest generation video cards from both AMD and NVIDIA support PCIe 4.0. In my case, I have an AMD Radeon 5700XT video card that is PCIe 4.0. You can minimize any possible impact from this by using a PCIe 4.0 video card instead of a PCIe 3.0 video card. This might sound bad, but it is actually not a problem for most scenarios. That means eight PCIe lanes instead of sixteen lanes. If you use the 2nd or 3rd M.2 slot (even for a PCIe 3.0 device), it causes the primary PCIe slot to go from PCIe 4.0 x16 down to x8. The B550 AORUS MASTER has three M.2 PCIe 4.0 slots that are all connected to the CPU.
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