Is amdkmpfd.sys needed with an Nvidia GPU?


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BrianInEngland

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I've seen this driver get installed a while back, but never noticed what it was for.
A search says it's something to do with an AMD Filter Driver.

Is this driver needed when using an Nvidia GPU?
 

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Can't say if it's needed but since the computer listed in your My Computer is AMD-based and if having no issues I'd leave it installed. I had something similar on an ASUS computer from 2016 with an AMD CPU and a GeForce video card [case plastic parts started breaking in '22].
 

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    Dell Vostro 3400
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    Intel Core i5 11th Gen. 2.40GHz
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    256GB SSD NVMe M.2
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Berton said:
Can't say if it's needed but since the computer listed in your My Computer is AMD-based and if having no issues I'd leave it installed. I had something similar on an ASUS computer from 2016 with an AMD CPU and a GeForce video card [case plastic parts started breaking in '22].
Click to expand...
Fair enough. I know that when I did a clean install of Windows this driver wasn't installed at the time. I disabled driver updates using Group policy, but then re-enabled it sometime later, the driver installed then. I've disabled driver updates again.
 

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    Windows 11 Pro 24H2 (RP channel)
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    AMD Ryzen 7 9800X3D 8-core
    Motherboard
    MEG X870E Godlike
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    64GB Corsair Titanium 6000/CL30
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    MSI Suprim X 3080 Ti
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    Soundblaster AE-5 Plus
    Monitor(s) Displays
    ASUS TUF Gaming VG289Q
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    Hard Drives
    Samsung 9100 Pro 4TB (gen 5 x4, system drive/games)
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BrianInEngland said:
I've seen this driver get installed a while back, but never noticed what it was for.
A search says it's something to do with an AMD Filter Driver.

Is this driver needed when using an Nvidia GPU?
Click to expand...



My comp is very similar to yours... and I don't have that driver anywhere on the Windows partition (C:\ drive)

I don't have MSI Afterburner installed, if it happens to be a part of that.



Amdkmpfd.sys file information​


The process known as AMD PCI Root Bus Lower Filter belongs to software AMD Driver by Advanced Micro Devices (www.amd.com).


Description: Amdkmpfd.sys is not essential for the Windows OS and causes relatively few problems. Amdkmpfd.sys is located in a not identifiable folder.
https://www.file.net/process/amdkmpfd.sys.html

The driver can be started or stopped from Services in the Control Panel or by other programs.It is not a Windows core file. The program is not visible. The amdkmpfd.sys file is digitally signed. There is no detailed description of this service. The file is a Verisign signed file.amdkmpfd.sys appears to be a compressed file.Therefore the technical security rating is 11% dangerous; however you should also read the user reviews.
Click to expand...




If you tell me the exact location you see the driver, I can check if I have it.
I don't have it in: C:\Windows\System32\drivers
 
Last edited:

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    Win 11 Home ♦♦♦26100.3775 ♦♦♦♦♦♦♦24H2 ♦♦♦non-Insider
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    AMD Ryzen 7 3700X
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    Windows XP Pro 32bit w/SP3
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    Built by Ghot® (not in use)
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    AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)
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    ASUS M2N32-SLI Deluxe Wireless Edition
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    TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)
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    EVGA 256-P2-N758-TR GeForce 8600GT SSC
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    up to 2048 x 1536
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    WD 36GB 10,000rpm Raptor SATA
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    Lite-On LTR-52246S CD/RW
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    PC Power & Cooling Silencer 750 Quad EPS12V
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Ghot said:
My comp is very similar to yours... and I don't have that driver anywhere on the Windows partition (C:\ drive)

I don't have MSI Afterburner installed, if it happens to be a part of that.








If you tell me the exact location you see the driver, I can check if I have it.
Click to expand...
It's located in C:\Windows\System32\drivers
 

My Computer

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  • OS
    Windows 11 Pro 24H2 (RP channel)
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    AMD Ryzen 7 9800X3D 8-core
    Motherboard
    MEG X870E Godlike
    Memory
    64GB Corsair Titanium 6000/CL30
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    MSI Suprim X 3080 Ti
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    Soundblaster AE-5 Plus
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    ASUS TUF Gaming VG289Q
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BrianInEngland said:
It's located in C:\Windows\System32\drivers
Click to expand...


I just checked there... I don't have it.
I don't see it in: C:\Windows\System32\DriverStore either.


If you have a fresh backup... just delete it if you want... and see if anything breaks.
 

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    Win 11 Home ♦♦♦26100.3775 ♦♦♦♦♦♦♦24H2 ♦♦♦non-Insider
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    Built by Ghot® [May 2020]
    CPU
    AMD Ryzen 7 3700X
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    Asus Pro WS X570-ACE (BIOS 5002)
    Memory
    G.Skill (F4-3200C14D-16GTZKW)
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    EVGA RTX 2070 (08G-P4-2171-KR)
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    Realtek ALC1220P / ALC S1220A
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    2x Samsung 860 EVO 500GB,
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    Windows XP Pro 32bit w/SP3
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    Built by Ghot® (not in use)
    CPU
    AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)
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    ASUS M2N32-SLI Deluxe Wireless Edition
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    TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)
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    EVGA 256-P2-N758-TR GeForce 8600GT SSC
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    WD 36GB 10,000rpm Raptor SATA
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    PC Power & Cooling Silencer 750 Quad EPS12V
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    Generic Beige case, 80mm fans
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    ZALMAN 9500A 92mm CPU Cooler
    Mouse
    Logitech Optical M-BT96a
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    Logitech Classic Keybooard 200
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    300/300
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    Firefox 3.x ??
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    Still assembled, still runs. Haven't turned it on for 15 years?
Ghot said:
I just checked there... I don't have it there either.
Click to expand...
OK no worries, I might see what happens if I remove it once my next scheduled image backup is done
 

My Computer

System One

  • OS
    Windows 11 Pro 24H2 (RP channel)
    Computer type
    PC/Desktop
    Manufacturer/Model
    MSI
    CPU
    AMD Ryzen 7 9800X3D 8-core
    Motherboard
    MEG X870E Godlike
    Memory
    64GB Corsair Titanium 6000/CL30
    Graphics Card(s)
    MSI Suprim X 3080 Ti
    Sound Card
    Soundblaster AE-5 Plus
    Monitor(s) Displays
    ASUS TUF Gaming VG289Q
    Screen Resolution
    3840x2160
    Hard Drives
    Samsung 9100 Pro 4TB (gen 5 x4, system drive/games)
    Samsung 990 Pro 2TB
    Samsung 980 Pro 2TB
    Samsung 870 Evo 4TB
    Samsung T7 Touch 1TB
    PSU
    Seasonic PX-2200
    Case
    Bequiet! Dark Base Pro 901
    Cooling
    Noctua NH-D15S Chromax black
    Keyboard
    Logitech G915 X (wired)
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    900Mb/sec
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BrianInEngland said:
OK no worries, I might see what happens if I remove it once my next scheduled image backup is done
Click to expand...


Yep... that's what backups are for... experimenting.
You too, can be a mad scientist. :D


Mad Scientist - blank.png
 

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    Win 11 Home ♦♦♦26100.3775 ♦♦♦♦♦♦♦24H2 ♦♦♦non-Insider
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    Manufacturer/Model
    Built by Ghot® [May 2020]
    CPU
    AMD Ryzen 7 3700X
    Motherboard
    Asus Pro WS X570-ACE (BIOS 5002)
    Memory
    G.Skill (F4-3200C14D-16GTZKW)
    Graphics Card(s)
    EVGA RTX 2070 (08G-P4-2171-KR)
    Sound Card
    Realtek ALC1220P / ALC S1220A
    Monitor(s) Displays
    Dell U3011 30"
    Screen Resolution
    2560 x 1600
    Hard Drives
    2x Samsung 860 EVO 500GB,
    WD 4TB Black FZBX - SATA III,
    WD 8TB Black FZBX - SATA III,
    DRW-24B1ST CD/DVD Burner
    PSU
    PC Power & Cooling 750W Quad EPS12V
    Case
    Cooler Master ATCS 840 Tower
    Cooling
    CM Hyper 212 EVO (push/pull)
    Keyboard
    Ducky DK9008 Shine II Blue LED
    Mouse
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    Internet Speed
    300/300
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    Speakers: Klipsch Pro Media 2.1
  • Operating System
    Windows XP Pro 32bit w/SP3
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    PC/Desktop
    Manufacturer/Model
    Built by Ghot® (not in use)
    CPU
    AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)
    Motherboard
    ASUS M2N32-SLI Deluxe Wireless Edition
    Memory
    TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)
    Graphics card(s)
    EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Sound Card
    Onboard
    Monitor(s) Displays
    ViewSonic G90FB Black 19" Professional (CRT)
    Screen Resolution
    up to 2048 x 1536
    Hard Drives
    WD 36GB 10,000rpm Raptor SATA
    Seagate 80GB 7200rpm SATA
    Lite-On LTR-52246S CD/RW
    Lite-On LH-18A1P CD/DVD Burner
    PSU
    PC Power & Cooling Silencer 750 Quad EPS12V
    Case
    Generic Beige case, 80mm fans
    Cooling
    ZALMAN 9500A 92mm CPU Cooler
    Mouse
    Logitech Optical M-BT96a
    Keyboard
    Logitech Classic Keybooard 200
    Internet Speed
    300/300
    Browser
    Firefox 3.x ??
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    Symantec (Norton)
    Other Info
    Still assembled, still runs. Haven't turned it on for 15 years?

My Computer

System One

  • OS
    Windows 11 Pro 24H2 (RP channel)
    Computer type
    PC/Desktop
    Manufacturer/Model
    MSI
    CPU
    AMD Ryzen 7 9800X3D 8-core
    Motherboard
    MEG X870E Godlike
    Memory
    64GB Corsair Titanium 6000/CL30
    Graphics Card(s)
    MSI Suprim X 3080 Ti
    Sound Card
    Soundblaster AE-5 Plus
    Monitor(s) Displays
    ASUS TUF Gaming VG289Q
    Screen Resolution
    3840x2160
    Hard Drives
    Samsung 9100 Pro 4TB (gen 5 x4, system drive/games)
    Samsung 990 Pro 2TB
    Samsung 980 Pro 2TB
    Samsung 870 Evo 4TB
    Samsung T7 Touch 1TB
    PSU
    Seasonic PX-2200
    Case
    Bequiet! Dark Base Pro 901
    Cooling
    Noctua NH-D15S Chromax black
    Keyboard
    Logitech G915 X (wired)
    Mouse
    Logitech G903 with PowerPlay charger
    Internet Speed
    900Mb/sec
    Browser
    Microsoft Edge
    Antivirus
    Windows Defender
BrianInEngland said:
I did read one of the articles that said it's not needed unless using an AMD GPU.
Click to expand...


For future reference... there's a LOT of un-needed drivers in a Windows install.
If you plan to go through all of them and remove the superfluous ones... buy a walker now.
You'll need it before you're done. :-)
 

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  • OS
    Win 11 Home ♦♦♦26100.3775 ♦♦♦♦♦♦♦24H2 ♦♦♦non-Insider
    Computer type
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    Built by Ghot® [May 2020]
    CPU
    AMD Ryzen 7 3700X
    Motherboard
    Asus Pro WS X570-ACE (BIOS 5002)
    Memory
    G.Skill (F4-3200C14D-16GTZKW)
    Graphics Card(s)
    EVGA RTX 2070 (08G-P4-2171-KR)
    Sound Card
    Realtek ALC1220P / ALC S1220A
    Monitor(s) Displays
    Dell U3011 30"
    Screen Resolution
    2560 x 1600
    Hard Drives
    2x Samsung 860 EVO 500GB,
    WD 4TB Black FZBX - SATA III,
    WD 8TB Black FZBX - SATA III,
    DRW-24B1ST CD/DVD Burner
    PSU
    PC Power & Cooling 750W Quad EPS12V
    Case
    Cooler Master ATCS 840 Tower
    Cooling
    CM Hyper 212 EVO (push/pull)
    Keyboard
    Ducky DK9008 Shine II Blue LED
    Mouse
    Logitech Optical M-100
    Internet Speed
    300/300
    Browser
    Firefox (latest)
    Antivirus
    Bitdefender Internet Security
    Other Info
    Speakers: Klipsch Pro Media 2.1
  • Operating System
    Windows XP Pro 32bit w/SP3
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® (not in use)
    CPU
    AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)
    Motherboard
    ASUS M2N32-SLI Deluxe Wireless Edition
    Memory
    TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)
    Graphics card(s)
    EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Sound Card
    Onboard
    Monitor(s) Displays
    ViewSonic G90FB Black 19" Professional (CRT)
    Screen Resolution
    up to 2048 x 1536
    Hard Drives
    WD 36GB 10,000rpm Raptor SATA
    Seagate 80GB 7200rpm SATA
    Lite-On LTR-52246S CD/RW
    Lite-On LH-18A1P CD/DVD Burner
    PSU
    PC Power & Cooling Silencer 750 Quad EPS12V
    Case
    Generic Beige case, 80mm fans
    Cooling
    ZALMAN 9500A 92mm CPU Cooler
    Mouse
    Logitech Optical M-BT96a
    Keyboard
    Logitech Classic Keybooard 200
    Internet Speed
    300/300
    Browser
    Firefox 3.x ??
    Antivirus
    Symantec (Norton)
    Other Info
    Still assembled, still runs. Haven't turned it on for 15 years?
Ghot said:
For future reference... there's a LOT of un-needed drivers in a Windows install.
If you plan to go through all of them and remove the superfluous ones... buy a walker now.
You'll need it before you're done. :-)
Click to expand...
I wasn't planning to remove many drivers, just curious about this one
 

My Computer

System One

  • OS
    Windows 11 Pro 24H2 (RP channel)
    Computer type
    PC/Desktop
    Manufacturer/Model
    MSI
    CPU
    AMD Ryzen 7 9800X3D 8-core
    Motherboard
    MEG X870E Godlike
    Memory
    64GB Corsair Titanium 6000/CL30
    Graphics Card(s)
    MSI Suprim X 3080 Ti
    Sound Card
    Soundblaster AE-5 Plus
    Monitor(s) Displays
    ASUS TUF Gaming VG289Q
    Screen Resolution
    3840x2160
    Hard Drives
    Samsung 9100 Pro 4TB (gen 5 x4, system drive/games)
    Samsung 990 Pro 2TB
    Samsung 980 Pro 2TB
    Samsung 870 Evo 4TB
    Samsung T7 Touch 1TB
    PSU
    Seasonic PX-2200
    Case
    Bequiet! Dark Base Pro 901
    Cooling
    Noctua NH-D15S Chromax black
    Keyboard
    Logitech G915 X (wired)
    Mouse
    Logitech G903 with PowerPlay charger
    Internet Speed
    900Mb/sec
    Browser
    Microsoft Edge
    Antivirus
    Windows Defender
Hi @BrianInEngland
This amdkmdpf.sys is I understand part of the AMD Radeon GPU drivers. I have a RX 7900 XTX and this file is in my system in two locations.
1. c:\windows\system32\drivers
2. c:\windows\system32\driverstore\filerepository

In the latter this file is listed in an AMD inf. In the Device Manager it is a PCI Bus device aka "AMD PCI Root Bus Lower Filter"

According to the post in the forum linked below (for Radeon driver specialists) the poster "The Creator" states (in the second post on the page) that the driver is redundant (includes on systems with Radeon GPUs and drivers like mine).

Leaving the driver on your hard drive as a precaution would be the logical thing to do IMO.

forums.guru3d.com

AMD Software: Adrenalin Edition 24.1.1 - Driver Download and Discussion

then why does Windows install the same driver even an old version? This driver is useless on Win11. Because Windows just sees that "hey you don't have...
forums.guru3d.com forums.guru3d.com
 
Last edited:

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    Asus ProArt Z790 Creator WiFi - Bios 2703
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    Orico 10-port powered USB 3.0 hub
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    Windows 11 Pro 24H2 26100.2894
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    Asus Vivobook X1605VA
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    Intel® Core™ i9-13900H
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    Asus X1605VA bios 309
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    720p Webcam
Marcus Vinicus said:
Hi @BrianInEngland
This amdkmdpf.sys is I understand part of the AMD Radeon GPU drivers. I have a RX 7900 XTX and this file is in my system in two locations.
1. c:\windows\system32\drivers
2. c:\windows\system32\driverstore\filerepository

In the latter this file is listed in an AMD inf. In the Device Manager it is a PCI Bus device aka "AMD PCI Root Bus Lower Filter"

According to the post in the forum linked below (for Radeon driver specialists) the poster "The Creator" states (in the second post on the page) that the driver is redundant (includes on systems with Radeon GPUs and drivers like mine).

Leaving the driver on your hard drive as a precaution would be the logical thing to do IMO.

forums.guru3d.com

AMD Software: Adrenalin Edition 24.1.1 - Driver Download and Discussion

then why does Windows install the same driver even an old version? This driver is useless on Win11. Because Windows just sees that "hey you don't have...
forums.guru3d.com forums.guru3d.com
Click to expand...
I've never used an AMD GPU nor installed the Adrenalin drivers, this installed through Windows Update after a clean install. My motherboard is AMD.
 

My Computer

System One

  • OS
    Windows 11 Pro 24H2 (RP channel)
    Computer type
    PC/Desktop
    Manufacturer/Model
    MSI
    CPU
    AMD Ryzen 7 9800X3D 8-core
    Motherboard
    MEG X870E Godlike
    Memory
    64GB Corsair Titanium 6000/CL30
    Graphics Card(s)
    MSI Suprim X 3080 Ti
    Sound Card
    Soundblaster AE-5 Plus
    Monitor(s) Displays
    ASUS TUF Gaming VG289Q
    Screen Resolution
    3840x2160
    Hard Drives
    Samsung 9100 Pro 4TB (gen 5 x4, system drive/games)
    Samsung 990 Pro 2TB
    Samsung 980 Pro 2TB
    Samsung 870 Evo 4TB
    Samsung T7 Touch 1TB
    PSU
    Seasonic PX-2200
    Case
    Bequiet! Dark Base Pro 901
    Cooling
    Noctua NH-D15S Chromax black
    Keyboard
    Logitech G915 X (wired)
    Mouse
    Logitech G903 with PowerPlay charger
    Internet Speed
    900Mb/sec
    Browser
    Microsoft Edge
    Antivirus
    Windows Defender
Many computers can run with default Microsoft drivers (without installing chipset drivers).

Installing chipset drivers usually improves performance.
 

My Computer

System One

  • OS
    Windows 10
    Computer type
    Laptop
    Manufacturer/Model
    HP
    CPU
    Intel(R) Core(TM) i7-4800MQ CPU @ 2.70GHz
    Motherboard
    Product : 190A Version : KBC Version 94.56
    Memory
    16 GB Total: Manufacturer : Samsung MemoryType : DDR3 FormFactor : SODIMM Capacity : 8GB Speed : 1600
    Graphics Card(s)
    NVIDIA Quadro K3100M; Intel(R) HD Graphics 4600
    Sound Card
    IDT High Definition Audio CODEC; PNP Device ID HDAUDIO\FUNC_01&VEN_111D&DEV_76E0
    Hard Drives
    Model Hitachi HTS727575A9E364
    Antivirus
    Microsoft Defender
    Other Info
    Mobile Workstation
The actual name of amdkmdpfs.sys is a 'AMD Kernel Miniport Filter Driver' or 'Amd root bus lower filter'. It could well be included in AMD motherboard chipset drivers according to unconfirmed information I saw online.

If there are no issues as stated previously the safe thing to do is to just leave on your hard drive.
 
Last edited:

My Computers

System One System Two

  • OS
    Windows 11 Pro 24H2 26120.3941
    Computer type
    PC/Desktop
    Manufacturer/Model
    Homebuilt
    CPU
    Intel Core i9 13900K
    Motherboard
    Asus ProArt Z790 Creator WiFi - Bios 2703
    Memory
    Corsair Dominator Platinum 64gb 5600MT/s DDR5 Dual Channel
    Graphics Card(s)
    Sapphire NITRO+ AMD Radeon RX 7900 XTX Vapor-X 24GB
    Sound Card
    External DAC - Headphone Amplifier: Cambridge Audio DACMagic200M
    Monitor(s) Displays
    Panasonic MX950 Mini LED 55" TV 120hz
    Screen Resolution
    3840 x 2160 120hz
    Hard Drives
    Samsung 980 Pro 2TB (OS)
    Samsung 980 Pro 1TB (Files)
    Lexar NZ790 4TB
    LaCie d2 Professional 6TB external - USB 3.1
    Seagate One Touch 18TB external HD - USB 3.0
    PSU
    Corsair RM1200x Shift
    Case
    Corsair RGB Smart Case 5000x (white)
    Cooling
    Corsair iCue H150i Elite Capellix XT
    Keyboard
    Logitech K860
    Mouse
    Logitech MX Ergo Trackball
    Internet Speed
    Fibre 900/500 Mbps
    Browser
    Microsoft Edge Chromium
    Antivirus
    Bitdefender Total Security
    Other Info
    AMD Radeon Software & Drivers 25.4.1
    AOMEI Backupper Pro
    Dashlane password manager
    Logitech Brio 4K Webcam
    Orico 10-port powered USB 3.0 hub
  • Operating System
    Windows 11 Pro 24H2 26100.2894
    Computer type
    Laptop
    Manufacturer/Model
    Asus Vivobook X1605VA
    CPU
    Intel® Core™ i9-13900H
    Motherboard
    Asus X1605VA bios 309
    Memory
    32GB DDR4-3200 Dual channel
    Graphics card(s)
    *Intel Iris Xᵉ Graphics G7 (96EU) 32.0.101.6078
    Sound Card
    Realtek | Intel SST Bluetooth & USB
    Monitor(s) Displays
    16.0-inch, WUXGA 16:10 aspect ratio, IPS-level Panel
    Screen Resolution
    1920 x 1200 60hz
    Hard Drives
    512GB M.2 NVMe™ PCIe® 3.0 SSD
    Other Info
    720p Webcam
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