Why is the random read and write speed for HP DL360 Gen9 installed with Optane P4800X 750G

[RedChimae]

Why is the random read and write speed for HP DL360 Gen9 installed with Optane P4800X 750GB AIC card-type SSD 4K Q1T1 only 41MB/s?

I have a HP DL360 Gen9 1U rack server in my hand, the hardware configuration is as follows:

Dual E5-2650 v3×2

Memory 128GB (32G×4)

Array card P440AR (2G cache)

FlexibleLOM bay with HP FlexFabric 10Gb 2-port 534FLR-SFP+ Adapter 10 Gigabit Optical NIC

The No.1 PCI Riser cage slut1 is equipped with HPE Tesla P4 GPU computing acceleration graphics card

                                         slut2 is equipped with Intel DC P3608 4TB PCIe NVMe AIC SSD

The No.2 PCI Riser cage slut3 is equipped with HPE OEM version Optane P4800X 750GB AIC SSD

But I don’t know why, using AS SSD Bench and other benchmark tools to test the performance of Optane P4800X, the speed of 4K Q11T1 random read and write is only 43MB/s, which should be more than 200+ normally? This happens because the CPU specifications are low and the performance cannot keep up, or the expansion slot on the No. 2 CPU channel of this HP machine is limited, but the transmission mode shown by CrystalDiskInfo detection is clearly PCIe 3.0 x4

[Bunsol]

Have checked the quickspecs and the option parts for DL360 Gen9 and could not find Intel Optane P4800X series listed. Could you verify if this is an HPE part. If the part is not listed in the quickspecs or the option parts list means that this has not been tested with DL360 Gen9 and is not compatible.

Below are links for quickspecs and option parts list:-

https://www.hpe.com/psnow/doc/c04346229.pdf
https://support.hpe.com/hpesc/public/docDisplay?docId=c04444424&docLocale=en_US