Tesla P6 Success

[ssj92]

Tesla P6 doesn't have any video output support. So it's a SG (Optimus) only option or using dual MXM slots in slot2.

 

It requires extra registry mods but I got it working. After some more testing I'll post the reg mod needed specific to Tesla cards.

 

Performance is low because AW18 has the pwr limit bug same as rtx 3000/5000.

 

GPU is 90W limited and cannot be modded by driver or vBIOS at all.

 

[hd321kbps]

On 4/6/2025 at 10:17 AM, ssj92 said:

It requires extra registry mods but I got it working. After some more testing I'll post the reg mod needed specific to Tesla cards.

What needs to be added to the registry?
Will the mod be published?

Thank you)

[ssj92]

10 hours ago, hd321kbps said:

What needs to be added to the registry?
Will the mod be published?

Thank you)

Dual PEG reg edit

 

1. Win + R 
2. Regedit
3. Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}

 

1. There should be a couple of folders such as 0000, 0001, etc. Check each folder which GPU it corresponds to 
2. Create a new DWORD key inside the folder for your high performance GPU , name it EnableMsHybrid and set value to 1. Ex: EnableMsHybrid=1
3. Create a new DWORD key inside the folder for your power saving GPU , name it EnableMsHybrid and value is 2. Ex: EnableMsHybrid=2
4. Reboot.

 

Next Regedit: 

 

HKEY_CURRENT_USER\Software\Microsoft\DirectX\UserGpuPreferences

 

create a new string value which name is “DirectXUserGlobalSettings”, and set its value to “HighPerfAdapter=xxx” where XXX stands for hardware ID’s VEN&DEV&SUBSYS of your graphics card, which can be found in device manager.

In the case of my 7800 XT "HighPerfAdapter=1002&747E&78011EAE" while device manager displays "PCI\VEN_1002&DEV_747E&SUBSYS_78011EAE&REV_C8"

 

Reboot

 

 

Now right click desktop and choose display settings. Then graphics settings. Add your app and choose high performance GPU for it 

 

 

Tesla specific addition:

 

 

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class{4d36e968-e325-11ce-bfc1-08002be10318},

find where your tesla card is, change “AdapterType” value to “1” and “FeatureScore” value from “cf” to “d1”,

create a new dword key which name is “GridLicensedFeatures”, and set its value to “7”. Disable then enable tesla in the device manager.

This step changs the gefore driver into grid driver，and the tesla is in wddm mode now.