I'm with sx 8200 pro on a helios 300 2019 with windows 10. I would like to know if for ssd better to use rst optane something like this or ahci? which driver should i install to be able to enjoy its full speed? I am currently having 1400 mb / s write and 2000 mb / s read.

@Fernando:
Good afternoon, follow the info:
1. ADATA, 1tb, sx8200 pro
2. I am a layman and that part I did not understand, but when entering the device manager and storage controllers appears intel (r) chipset SATA / PCIe RST Premium controller and Microsoft Storage Space Controller
3. I currently use an 860 evo m2 sata. The adata sx8200 pro has not had the expected performance, I want to know if any config solves this (in the bios tah rst) if it changes to ahci not from the boot, then I would have to format that doing this will I have the expected performance of the sx8200 pro? I'm also looking to try to get the western digital sn750.
Remembering that I am using an acer helios 300 notebook ph315-52-748u. It has i7 9750h, 16gb ram and gtx 1660ti. I don't know if that helps to understand the case, but it is there as a complementary info.

EDIT by Fernando: Fully quoted post replaced by directly addressing to the author (to save space)

Hello everyone.
I have motherboard ASUS TUF GAMING X570-PLUS.
There are two m.2 slots, which according to specs, are PCIE 4.0 x4.
I bought WD Black SN750.
When i put disk into m2.1, i got info, that connection is detected as PCIE 3.0 x1, and then i have trasnfers around 800 MB
When i put disk into m2.2 i got info, that connection is detected as PCIE 3.0 x4, and then i have transfers around 1700 MB (very similar to mentioned in this topic).
Sn750 is connected as “storage” drive. I have second, sata ssd disk (128 gb) which boots Windows 10.
I tried to update bios and amd chipset drivers to newest one. The same goes to sn750 - it is up to date.
On device managment i see only Standard NVME Express Controller.
What should i do to fully enjoy sn750 power? :slight_smile:
Can you help me, please? :)

Hi. Thanks for response.
I want to utilize maximum performance of the disk which i own. This is sn750.
Right now i can only use half of its power.
It's using PCIe 3.0 which should be supported on x570, right?
I have Ryzen 3600x.
Right now i did clean install of Windows OS on this NVME disk. Also i disabled sata. So it is only this one disk plugged in, where OS is installed.
I did test, and again, i have the same situation - only half of power is used:
(i can't paste url to image, because of forum restriction..., but it states around 1600 MB/s) :
I can't plug it on the m.2.1 port, because then performance is even worse, as system sees this as PCIE 3.0 x1 (only one lane), which of course is also bizzare and strange, as both m.2 slots on motherboard suppose to support PCIE 4.0 x4.
What can be wrong with my setup, that it so low?

@Fernando,
Do you know if under any specific full Intel configuration PCIe V4.0 is supported as well you explained under a full AMD configuration ?

@Fernando
Do you have any ideas why its not working at full spead? What else can i check?
It's 4k aligned, it's fresh os, write-back cache disabled etc. everything i did as it suggested in guideline, and still, performance is double less than it should be...

@darthkurak He already practically pointed you "where to look", read again his number 3. point, and check within your mobo manual how to configure UEFI!
Namely, it took me 3 seconds to see on ASUS mobo specifications site that you do have 2 M.2 slots, and one of those is not on the CPU! Also both are PICe 4.0 x4 (one is CPU dependent).
So, reed the mobo manual FIRST for which is which slot, and UEFI settings!! You must of missed something... ;)

@MDM
I am not a lame user. I did a lot of check up. I followed any sensible suggestion from this site. Of course I checked manual, I checked BIOS settings. Everything seems to be on place. And as i stated: i tried both m.2 slots. What is odd, on m.2.1 slot (this connected on CPU), it was detected as PCIe 3 x1 (i don't have any idea why...), so the result was on this slot even worse... On m2.2 it is detected as PCIe 3 x4, which should support speeds up to 3xxx MB/s.
But speeds are still around 1600 MB/s and i am empty of ideas what else can i check or do to unblock power of the disk.
It is possible that the disk itself is faulty in terms of speed? I don't have any replacement, so i want to do any possible checkups before i send it on warranty...

@darthkurak No, probably not, an SSD (NVMe or else) just works or not.
You also newer stated your disk size! Just the model...
Throttling? What are the temps?
Slim chance but possible, that the mobo is broken and giving only x1...
Could check your NVMe in an PCIe-M.2 converter card (very cheap, under 10€) to rule out the disk.

You are right. This is 1TB size :)
Temps are around 33-37 C. This is version with heatsink.
That converter is really good idea. I will try to buy one as soon as possible and give it a shot.
Thanks for clues :)