Low performance for my PCIe SSD Intel 900P

Please, help me find out what is happening with my system. Optane 900P seems to work at half speed, and the access times are worrisome: 0.04 - 0.05 instead of around 0.1.

My system: Ryzen 1700 with x370 Taichi motherboard. Windows 10.

Benchmarks:
https://preview.redd.it/xc9sv7xijrfa1.png?width=623&format=png&auto=webp&v=enabled&s=baf53cdd8314dc2135619238d5cae58d5d4a6a3c
https://preview.redd.it/oceaxwt3jrfa1.png?width=602&format=png&auto=webp&v=enabled&s=3c8d06dcf6095249ad64bdaaa00e91262ab9bf07
https://preview.redd.it/3s7kw026jrfa1.png?width=704&format=png&auto=webp&v=enabled&s=6bc74be2cf98fa089f48157f1c5925b2897bc750

Current 900P firmware, supposedly the latest? 2010603.

The PCI lanes:
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PCIE1 (PCIe 2.0 x1 slot) is used for PCI Express x1 lane width cards.

PCIE2 (PCIe 3.0 x16 slot) is used for PCI Express x16 lane width graphics cards.

PCIE3 (PCIe 3.0 x16 slot) is used for PCI Express x8 lane width graphics cards.

PCIE4 (PCIe 2.0 x1 slot) is used for PCI Express x1 lane width cards.

PCIE5 (PCIe 2.0 x16 slot) is used for PCI Express x4 lane width graphics cards.

* If PCIE5 slot is occupied, M2_2 will be disabled

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https://preview.redd.it/yn7z13i8ezfa1.png?width=1653&format=png&auto=webp&v=enabled&s=7e750a4da96820bb704e5601c7b96b64a4f67b9f


As far as I see, the PCIe5 seems to be the best place for this drive, as it has an x2 socket, but that PCIe5 seems to be shared between several devices.

Anyway, I tried to put the drive into the secondary GPU PCIe3, so I have both the GPU and the 900P with x8 lanes. Better bandwidth, but well, not better access times (and of course, it is limiting the GPU):
https://preview.redd.it/0370htw7ykga1.png?width=620&format=png&auto=webp&v=enabled&s=c41d52d7ff8bb48f14d695c67ef8ef0e70e20ae5
https://preview.redd.it/qi3c87t0zpga1.png?width=2560&format=png&auto=webp&v=enabled&s=aeccbe162b9f735c8ad1a96bb6e1ddca077f9661


Please, Is this a limitation of this motherboard? or must I install some driver? I have already installed the latest intel drivers for my drive and tried other driver versions as well, but the problem persists.

Thank you

Hi @Nightlane

PCIe5: 900P is Gen2, not Gen3 and PCIe5 is going through x370promontory chipset then to CPU, latency highest.

PCIe3: 900P goes direct to CPU 8xLANEs but 4x is wasted not used. If you want to reduce latency then move it to PCIe2.

If you want even lower latency then buy a convertor M.2 riser to PCIe socket and plug the 900p into M.2_socket_1_riser_adaptor + 12V power mini molex thing. This is the original dedicated Gen3_pcie_4_lanes shortest direct to CPU.

GPU running 8xLANEs is not limited, especially if you plat 1440p or 4k they are always GPU bound. Even at 1080p, performance not lost may be just 1%, nothing to cry about.

Any particular reason why you are using the Intel® Optane??Memory User Interface and Driver for System Acceleration 16.8.4.1011 ???

the correct driver for optane 900p is at: https://www.intel.co.uk/content/www/uk/en/products/sku/123628/intel-optane-ssd-900p-series-280gb-12-height-pcie-x4-20nm-3d-xpoint/downloads.html

https://downloadmirror.intel.com/762952/SetupNVME.exe

regards

Katana1074 wrote: Any particular reason why you are using the Intel® Optane??Memory User Interface and Driver for System Acceleration 16.8.4.1011 ??? the correct driver for optane 900p is at: https://www.intel.co.uk/content/www/uk/en/products/sku/123628/intel-optane-ssd-900p-series-280gb-12-height-pcie-x4-20nm-3d-xpoint/downloads.html https://downloadmirror.intel.com/762952/SetupNVME.exe regards

Star Citizen, and I am a nerd and a coder, hahaha

Thank you!

I checked that driver, and then the one you saw, and got +- the same performance. I will reinstall the recommended drivers again.

Oh, yeah, and about the riser, I have to find a way to attach it to my computer case, a "Phanteks Enthoo EvolV silver"