Recommended AHCI/RAID and NVMe Drivers

3 posts were merged into an existing topic: Which NVMe Drivers are the best (performance related)?

Hi Fernando, does it perform well? As far as the testing?


Which driver do you mean? I have tested several different ones.
If you have a specific question, you should write it precisely.
By the way - the start post of this thread contains a lot of benchmark results. So there is no need for your question.

Apologies, for the SiliconMotion you tested above. I actually replied to that one. Which I don’t understand why the reply is so far down from your posted reply up top.

I tested it didn’t do so well on this system. I found the Micron and the Standard NNMe Controller Drivers to be best on this system.

Thanks for this incredible site and all the rest that is here.

I have a AMD AMD B550 AORUS motherboard and a WD Black 750SE nvme, what kind of drivers and software should I be using to get the best performance out of my WD NVME drive? I also have a random 4tb sata installed as a secondary for storage, the OS is on the Nvme though.

Also I’m not running RAID or anything but would not generic AHCI drivers give me better performance? If so which exact ones?

I really don’t want to mess up the drivers and have to reinstall Windows 11.

Thank you for any help.

Hi … need some help … trying install windows7x64 on gigabyte z390-d raid0 2xnvme … installer see raid … but after install, when system boots, getting error:

Can i solve this problem ? or windows 7x64 on z390 - bad idea ?

Edit by Fernando:
1. Post moved into this better matching thread.
2. Picture resized and directly inserted

You can install Win7 onto an NVMe SSD (after having erased the Intel RST RAID array from within the BIOS and integrated the related MS Hotfixes into the boot.wim and install.wim of the Win7 ISO file), but I doubt, that you will be able to get Win7 installed onto an Intel RAID array consisting of NVMe SSDs.

iarnvme_7.8.0.1026@2022.07.07_07.31.rar (410.4 KB)

Supplements IaNvme ( It does not replace it because the new driver does not include five HWIDs that the older one does (DEV_0B60, DEV_2525, DEV_4140, DEV_F1A8, DEV_FAF0).

And if anyone needs:
iaRNVMeVirt_7.8.0.1026@2022.07.07_07.31.rar (411.9 KB)

Thanks for the link. These new Intel NVMe drivers v5.3.0.1010 WHQL dated 10/19/2022 are already available within the start post.

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I think I’ll end up using the generic Phison driver with the WD SN850. The performance increase seems worth it. Thank you @Black6spdZ and @Fernando for posting them!

One caveat is that with this driver, the NVMe drive shows as removable. Since it’s always going to be in use, it can’t be actually be removed anyway, so if accidentally clicked, nothing will happen. It’s just a cosmetic issue. Still, would be nice to have a fix for it. So here it is:

Make NVMe Non-Removable Again

Step 1. Add the registry value to make the container non-removable:

Windows Registry Editor Version 5.00


This only has to be done once. After a reboot, the NVMe drive will no longer show as separate from the computer in Device Manager (Win-X, M) → ViewDevices by container.

Unfortunately, this isn’t enough: the drive will still show as removable in the tray menu, only as part of the computer.

Step 2. Adjust NVMe device capability flags:

@echo off
set devcap=96
set devname=NVMe
set reg_prefix=
set reg_sys=HKLM\%reg_prefix%SYSTEM
for /f %%i in ('reg query "%reg_sys%\CurrentControlSet\Enum\SCSI" /f "Capabilities" /s /v ^| find "%devname%" ') ^
do reg add "%%i" /v "Capabilities" /t REG_DWORD /d %devcap% /f

This sets DEVICE_CAPABILITIES to CM_DEVCAP_RAWDEVICEOK (0x40) | CM_DEVCAP_SILENTINSTALL (0x20) = 0x60 = 96, removing CM_DEVCAP_REMOVABLE (0x04) in the process. A more general way would be to read the value first and remove CM_DEVCAP_REMOVABLE from it.

The change takes effect immediately but unfortunately doesn’t persist across reboots.

Step 3. Make the fix persist across reboots:

Copy the above batch file to %SystemRoot%\System32 as NVMeNonRemovableFix.cmd. Then run the following as an Administrator (Win-X, A):

schtasks /create /sc ONSTART /tn "Clear NVMe CM_DEVCAP_REMOVABLE" /tr "NVMeNonRemovableFix.cmd" /ru System /f

This task will run on every startup to clear the flag. This way the tray icon won’t even appear unless another removable device is connected.

The above is based on the assumption that all NVMe drives in your system are non-removable. If that’s not the case, SCSI#DiskNVMe____ in the Registry snippet and the devname=NVMe value in the batch script can be customized to only match a particular device.

Download the three files listed above: (1.1 KB)

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Thanks for the link. After having extracted the related driverpack I realized, that it contains new AMD RAID drivers.

Although I had announced to stop the support of this thread, I have tried to update the start post today, because until now there is obviously nobody willing to overtake the task.
Unfortunately the structure of the start post became even worse by the update. Maybe I will try to repair it.

A post was merged into an existing topic: [Guide] Integration of AMD’s AHCI/RAID drivers into a WinXP/W2k3 CD

Just want to be a random guy on the internet to say thank you for this post even if its outdated it was very helpful.
I had an issue trying to upgrade to the sam 980pro from old HP 920ex - the custom drivers for the hp 920ex to fix there speed/temp problem locked itself as default for all new drivers in windows
since Samsung doesn’t allow you to download a nvme driver directly and magician wont work unless there is already a magical driver that sees its nvme in windows. I was SOL if you want to clone windows to them because windows wasn’t updating the drivers because of the hacky driver written for the old hp nvme (generic nvme drivers would crash the system if installed before)
After finding this post I was able to use the Samsung drivers you had and injected them into my cloned drive saving me probably 2 weeks of reinstall software and calling different software companies for new license keys

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Welcome to the Win-RAID Forum and thanks for your feedback!
Enjoy the Forum!
Dieter (alias Fernando)

Faced with the fact that PCIe 3.0 ASM1166 (x2) and ASM1064 (x1) controllers on the Win7 either drive the system into suspended animation with standard Microsoft drivers, or there is no TRIM if these are native ASM drivers, although they write that controllers should work even with XP.
If on Win10 and with drivers and with standard Windows TRIM works, then on Win7
with driver - TRIM does not work. We need an older version of the drivers.
There is only the driver on the network, but it is only for Win8 +, an attempt to install it leads to BSOD.
Is this everything, finish, or are there thoughts on correcting the situation?

I have try to port the win8+ driver work on win7, but it still BSOD even I remove the OS check on the *.sys file.

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I understood correctly that in the ASMedia driver version, do you also not have TRIM working? And version also does not work with Windows 7.
I do not understand such negligence in the work of ASMedia.

Welcome to the Win-RAID Forum!

Which driver version do you want to try while runninng Win7? I am able to offer older ASMedia v3 platform AHCI/RAID drivers v3.3.2.0, v3.2.1.0 and v3.1.9.0, but I seriously doubt, that they do support TRIM. At that time nobody among the chipset manufacturers took care about TRIM support.
You probably have to decide: Win10 with TRIM support or Win7 without it.
Off topic: Please edit your previous post, if you want to add a missing information. Nobody gets a medal here for the biggest number of posts.
Happy New Year!
Dieter (alias Fernando)

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Thank you for the answer and thank you for the work of the enthusiast that you are doing! I appreciate it very highly. Version is dated 2020. It is strange enough that at this time both ASM1064 and ASM1166 did not think about SSD and TRIM for new chips. The manufacturer’s drivers for Windows 7 have as many as 3 versions located in the scsi, stahci and stor directories. Why not explain such a variety for the same system?
I tried to figure it out.
STOR - for Windows XP and Windows 7
STAHCI - for Windows 10.
But then what are the other driver versions for?

Without installing Windows drivers with the ASM1064 or ASM1166 controller installed, 30 minutes load!!! Everyone’s like that? Or is it a conflict with other drivers on my system?