SLI with different cards

[P!nkpanther]

I did everything according to the instructions, it does not work.
MB - Asus Prime B360 Plus GPU GTX1060 6gb + GTX1060 3gb
Help me please.

The patches for 4xx drivers only work with identical cards. (And BTW, those instructions are incomplete; they lack at least the steps of determining the actual driver location and editing the command file accordingly)

You need the old patcher and driver (1.7.1 & 388.71), as outlined in this post (start reading below the video):
https://www.techpowerup.com/forums/threads/sli-with-different-cards.158907/post-3968942

 

[Penneker]

Your use case doesn't sound like it would require SLI at all (@P!nkpanther any thoughts?). In terms of the whole P106 situation, I don't know of anyone who has actually tried to do the whole pass-through method with the most recent drivers. Assuming that it works (with the latest driver) then it would make sense to explore SLI, but honestly most people seem to be trying to put the "cart before the horse".


EDIT: For those who would like to test SLI with non matching GPU's and @topmysteries5:

418.81
===================== The usual stuff
00000000002C35A3: 75 C7
00000000002C35A4: 05 43
00000000002C35A5: 0F 24
00000000002C35A6: BA 00
00000000002C35A7: 6B 00
00000000002C35A8: 24 00
00000000002C35A9: 0E 00
=====================

------------------------------------ This might help enable SLI in non matching GPU's - ATTENTION: A lot of these bytes are not contiguous (adjacent to each other), make sure to patch things correctly and report back
00000000002C35ED: 0F 90
00000000002C35EE: BA 90
00000000002C35EF: 6B 90
00000000002C35F0: 24 90
00000000002C35F1: 11 90
------------------------------------
00000000002C3600: 0F 90
00000000002C3601: BA 90
00000000002C3602: 6B 90
00000000002C3603: 24 90
00000000002C3604: 18 90
------------------------------------
00000000002C3613: 0F 90
00000000002C3614: BA 90
00000000002C3615: 6B 90
00000000002C3616: 24 90
00000000002C3617: 19 90
------------------------------------
00000000002C3628: 0F 90
00000000002C3629: BA 90
00000000002C362A: 6B 90
00000000002C362B: 24 90
00000000002C362C: 0B 90
------------------------------------
00000000002C363F: 0F 90
00000000002C3640: BA 90
00000000002C3641: 6B 90
00000000002C3642: 24 90
00000000002C3643: 0C 90
------------------------------------
00000000002C3659: 0F 90
00000000002C365A: BA 90
00000000002C365B: 6B 90
00000000002C365C: 24 90
------------------------------------
00000000002C365D: 0F 90
00000000002C366E: 0F 90
00000000002C366F: BA 90
00000000002C3670: 6B 90
00000000002C3671: 24 90
00000000002C3672: 10 90
------------------------------------

EDIT 2: Separated the offsets by contiguous blocks so that it's easier to digest/follow.

Has anyone tried this method, I want to combine 1060 6g and 1060 3g, are these offsets still relevant?
PS. on 388.71 everything works, but new games refuse to start and work normally on such an old driver.

UPD:I try it for 418.81, Sli option appeared in control panel, but if I turn sli on, the driver crashes and the control panel disappears. I checked the edits, everything matches. What could it be?
Thank You!

 

[P!nkpanther]

The driver bluescreening the system after enabling SLI used to be a sure indication that the hardware side of the GPUs could not work together in SLI, for whatever reasons (e.g. different microarchitectures). This was using the 3xx patch.

With the new 4xx patch, plus those additional patches for different GPUs, it could also be possible that these latter (untested) patches brought in additional uncertainty and it might also be these, which are responsible for the blue screens.

 

[DonnerPartyOf1]

I've made major updates to my FreeSLI program. I ported all the patching logic to C# and built a command line program around it. Usage is far simpler now, all you need to do is install your driver, reboot into safe mode with networking, then run my program in an elevated command prompt or Powershell and answer Y/N to a couple prompts. The program effectively replaces the entire sequence of finding the driver path, copying the driver file out, patching manually, replacing the path in the DifferentSLIAuto install script, rebooting, and executing.

If you have EfiGuard installed, FreeSLI can also be run with a switch that calls EfiDSEFix to disable DSE, resets display devices, then re-enables DSE. I have a task set to trigger the program with this switch on startup.

I hope this helps others as much as it's made my personal rig easier to manage.

 

[stunts513]

I've made major updates to my FreeSLI program. I ported all the patching logic to C# and built a command line program around it. Usage is far simpler now, all you need to do is install your driver, reboot into safe mode with networking, then run my program in an elevated command prompt or Powershell and answer Y/N to a couple prompts. The program effectively replaces the entire sequence of finding the driver path, copying the driver file out, patching manually, replacing the path in the DifferentSLIAuto install script, rebooting, and executing.

If you have EfiGuard installed, FreeSLI can also be run with a switch that calls EfiDSEFix to disable DSE, resets display devices, then re-enables DSE. I have a task set to trigger the program with this switch on startup.

I hope this helps others as much as it's made my personal rig easier to manage.

Very nice, even has a reset flag for efiguard, i had a batch file running at startup prior to accomplish that. That kinda simplifies things for me. Works great, hopefully it starts getting some use from the community.
On a somewhat related note, I had the opportunity to test it out after doing a fresh install of windows on a vm and it actually boots this time round without getting a bsod when i enable the code 43 workaround. Did the trick nicely. Now i can finally work on optimizations(as soon as i fix the fact windows now deactivated...).
Fun fact, without optimizations this time, i somehow ended up idling at 2000-3000 μs, kinda surprised me. Time to get to work.

 

[stukaville]

Ive only just heard of this Different SLI auto software so please forgive my very nube question, i suspect the answer is NO anyway but here goes. I have an Alienware laptop with built in intel and nvidia GPUs, The Nvidia GPU is a Geforce GTX980m. Ive just ordered the Alienware GPU so i can play more advanced games. The card I will be installing is an msi geforce rtx 2060 gaming z 6gb. Once the Alienware Graphics amp is connected the internal Gf980m will be automatically disabled and the MSI will take over.


Is this software only to connect two GPUs using a physical connection or can it also work in my situation?

 

[P!nkpanther]

...the answer is NO anyway...

You were guessing right.
It won't work just from the fact that 980 and 2060 have different microarchitectures.

The purpose of the DifferentSLIauto patches is to bypass some of the hardware requirements to enable the driver's SLI functionality.
Whether that functionality would allow SLIing an iGPU together with an identical eGPU is another question, which has not been answered in this forum yet.
As well as the question, whether this would make sense at all for performance, since the Tbolt interface might be a severe bottleneck for SLI.

 

[stukaville]

You were guessing right.
It won't work just from the fact that 980 and 2060 have different microarchitectures.

The purpose of the DifferentSLIauto patches is to bypass some of the hardware requirements to enable the driver's SLI functionality.
Whether that functionality would allow SLIing an iGPU together with an identical eGPU is another question, which has not been answered in this forum yet.
As well as the question, whether this would make sense at all for performance, since the Tbolt interface might be a severe bottleneck for SLI.

Thanks for the confirmation, re " since the Tbolt interface might be a severe bottleneck for SLI." The Alienware adapter doesn't use Tbolt

 

[P!nkpanther]

Thanks for the confirmation, re " since the Tbolt interface might be a severe bottleneck for SLI." The Alienware adapter doesn't use Tbolt

I wasn't aware of that, since I haven't bothered much with laptops. I any case, even an interface with 32 Gbps max throughput, like x4 PCIe 3.0, will very likely be a bottleneck, without the data transfer over an SLI bridge or nVLink.

 

[dragon20]

I have try DifferentSLIAuto1.7.1 win10 and FreeSli
don't matter what i do nothing work ;(

help?

 

[Nemeses]

While I wait and see if manobroda's test of his 2080 Ti's works out.
I did find this article that describes the process on the X370 chipset (also with bifurcated ITX):

Dropbox

www.dropbox.com

I have checked my ITX board's DSDT and it is indeed missing the necessary SLI license information. Seriously considering ordering an Asrock X570 Gaming X, lifting the DSDT license key and returning it to Amazon...

After digging into my wallet to purchase a X570 Taichi, PSU, and cheap Ryzen, I managed to extract the DSDT using CLOVER from the 'donor' X570 as per the above manual (which did it for the X370 chipset). Following a simple edit of the ITX board's DSDT, and enabling the x8x8 bifurcation, SLI now works!

The issues I faced are almost certainly related to using a single x16 slot and bifurcating it into two x8's.
I'll post some pictures of this tiny build soon.

 

[Penneker]

GTX1060 6g + GTX1060 3g work for me in 399.07, newer = bsod
It,s beter then 388.71, new games works fine.
Offsets HEX:
1 - 00000003 - 00000007
00 03 00 00 00 to 90 90 90 90 90
2 - 00167653 - 00167658
FE 81 30 04 00 00 to 90 90 90 90 90 90
3 - 001E08DA
85 to 31
4 - 002B00B3 - 002B00B9
75 05 0F BA 6B 24 0E to C7 43 24 00 00 00 00
after activating Sli, force SLI rendering mode to Single-GPU
1 card - https://www.3dmark.com/spy/10136428
Sli - https://www.3dmark.com/3dm/43198900

 

[Nemeses]

After digging into my wallet to purchase a X570 Taichi, PSU, and cheap Ryzen, I managed to extract the DSDT using CLOVER from the 'donor' X570 as per the above manual (which did it for the X370 chipset). Following a simple edit of the ITX board's DSDT, and enabling the x8x8 bifurcation, SLI now works!

The issues I faced are almost certainly related to using a single x16 slot and bifurcating it into two x8's.
I'll post some pictures of this tiny build soon.

View attachment 142769

Ps. Posted my build here: https://smallformfactor.net/forum/t...m580-dual-2080ti-sli-3950x-custom-loop.12254/
And performance here: https://smallformfactor.net/forum/threads/ppl-performance-per-liter-round-2.8824/page-4#post-183365

 

[TuriusUSA]

Long ago, I had a nice XFX 750i Intel 775 DDR2 motherboard with SLI, it worked well for CAD and gaming, but then I downloaded a file and the system stopped working, clearly a virus... I tried many things, but never could get the system to POST again, that was many years ago...
A few years I managed to buy a laptop, ASUS G73SW 8GB mem, that works OK for doing CAD and gaming...
However it is now having problems and I must figure something else out... As I am a disabled Vet. and have very limited income, I'm forced to work with what I have... I'm going to try and do some drafting work to fix that problem, until then...
When a friend moved out he left a bunch of computer parts, I managed to make the below MB to post and had some 16GB DDR3 laying around, put them together with a cheap graphics card and it worked somewhat...
It's a CROSSHAIR IV FORMULA and I want to put my [2] older NVidia 9800 GT SLI video cards into it, It has 16GB DDR3 RAM currently only seeing 8GB's, but I will work on fixing that later...
I have read most of these posts and have tried to use the "DifferentSLIAuto 1.4" but have NOT had any luck... The Nvidia will only let me install the "342.01-desktop-win10-64bit-international.exe" drivers and they do NOT support SLI, I downloaded the "398.36-desktop-win10-64bit-international-whql.exe" driver but it will NOT allow me to install stating that it can't find any video card that supports it...
ANY help on this matter would be greatly appreciated...

Thank you and GOD Bless you and yours... AMEN...

P.S. It only shows one video card, on the GPU-Z and device manager...
Ken

 

[P!nkpanther]

P.S. It only shows one video card, on the GPU-Z and device manager...

So here's your first problem.
Not even talking of activating SLI, both cards have to be recognizable to the system first.
Maybe one card is dead or not sufficiently supplied?

It's a CROSSHAIR IV FORMULA and I want to put my [2] older NVidia 9800 GT SLI video cards into it, It has 16GB DDR3 RAM currently only seeing 8GB's, but I will work on fixing that later...
I have read most of these posts and have tried to use the "DifferentSLIAuto 1.4" but have NOT had any luck... The Nvidia will only let me install the "342.01-desktop-win10-64bit-international.exe" drivers and they do NOT support SLI, I downloaded the "398.36-desktop-win10-64bit-international-whql.exe" driver but it will NOT allow me to install stating that it can't find any video card that supports it...

In order to patch the 342.01 driver, you probably need DifferentSLIauto something around version 1.1
There's a download link on the following page, but I'm not sure whether you will be successful with it:

SLI with different cards

Ok, so I tried taking the SLI bridge off like you said you did, but it only made matters worse. I was able to enable SLI surprisingly o_O but as soon as Unigine Heaven went to the loading screen, PC froze. If anyone finds an answer to this freezing, please let me know. Side note: What's the...

www.techpowerup.com

Also, such early versions of the patch are meant for Windows 7 and 8 only
For Windows 10 you need to modify the install scripts.

 

[4c20G]

was wondering what versions i would need for sli with 2 asus gpu. one is a gtx660 and the other a gtx660ti both 2gb vram. i know the gpu isnt the same chipset gk104 and gk106. thanks

i was doing a video on my pc yesterday and thougth about doing the sli. been an idea ive had for a couple months but forgot i had a spare gpu laying around

pc is a m5a99x evo with h850 psu, a fx-8320 cpu and 16gb ram. currently running on the gtx660ti

 

[P!nkpanther]

There's a good chance to make this work using the old patcher and driver (1.7.1 & 388.71), as outlined in this post (start reading below the video):
https://www.techpowerup.com/forums/threads/sli-with-different-cards.158907/post-3968942

 

[Lerva]

Have had massive problems running 4* 2080Ti with latest Gigabyte MoBos. Designare precisely. CPU is 3960X.
Eventually after BIOS update system started with four(4) GPUs.
Last problem remaining is to get two(2) NVLink circuits running in Windows 10. One(1) bridge circuit is detected correctly but no matter what I do, Cannot get the second bridge up an running. Anyone faced similar situations?
Requested BIOS update from Gigabyte but so far only radio silence.

 

[system1357]

Ah
Good to be back here after finishing that nasty medical licencing exam...
@Pretentious would you mind me fixing DSLIA with the new offsets you provided?
I'm also revisiting the patching process with your findings

EDIT:
After crawling through the thread I saw that @DonnerPartyOf1 had already made an all-in-one patcher with EFIGuard support
https://www.techpowerup.com/forums/threads/sli-with-different-cards.158907/post-4187601
Guess that DSLIA should then be obsolete and encourage new users to use the new and cleaner patcher

 

[Letsmoe]

I wonder if anyone can help me, i was trying to SLI a GTX 670 and GTX 680 on an Z170 Mainboard, i tried out many drivers now and none of them worked, it worked for me in the past but i was wondering if it had anything to do with another version of DifferentSLIAuto i downloaded so it doesn´t work anymore...

Here are my Specs, maybe they help a bit...
-Z170 Pro Gaming
-I5 6400T
-GTX 670
-GTX 680 -> Both from Palit
-16 gigs RAM

Thanks in advance.
Letsmoe

 

[P!nkpanther]

SLIing different cards only works using the old patcher and driver (1.7.1 & 388.71), as outlined in this post (start reading below the video):
https://www.techpowerup.com/forums/threads/sli-with-different-cards.158907/post-3968942

 

[angel618]

442.50

001c87e5: 84 C7
001c87e6: C0 43
001c87e7: 75 24
001c87e8: 05 00
001c87e9: 0F 00
001c87ea: BA 00
001c87eb: 6B 00

 

[angel618]

442.59

001c87e5: 84 C7
001c87e6: C0 43
001c87e7: 75 24
001c87e8: 05 00
001c87e9: 0F 00
001c87ea: BA 00
001c87eb: 6B 00

 

[bimapetala]

i couldn’t install the 417.35/71 driver with win 10 build 1903.. anyone help?

i have 1060gtx 6gb couples and success to sli before with 388.71

 

[bimapetala]

GTX1060 6g + GTX1060 3g work for me in 399.07, newer = bsod
It,s beter then 388.71, new games works fine.
Offsets HEX:
1 - 00000003 - 00000007
00 03 00 00 00 to 90 90 90 90 90
2 - 00167653 - 00167658
FE 81 30 04 00 00 to 90 90 90 90 90 90
3 - 001E08DA
85 to 31
4 - 002B00B3 - 002B00B9
75 05 0F BA 6B 24 0E to C7 43 24 00 00 00 00
after activating Sli, force SLI rendering mode to Single-GPU
1 card - https://www.3dmark.com/spy/10136428
Sli - https://www.3dmark.com/3dm/43198900

hey are it’s fine when youre playing new games ? and could you help me how

GTX1060 6g + GTX1060 3g work for me in 399.07, newer = bsod
It,s beter then 388.71, new games works fine.
Offsets HEX:
1 - 00000003 - 00000007
00 03 00 00 00 to 90 90 90 90 90
2 - 00167653 - 00167658
FE 81 30 04 00 00 to 90 90 90 90 90 90
3 - 001E08DA
85 to 31
4 - 002B00B3 - 002B00B9
75 05 0F BA 6B 24 0E to C7 43 24 00 00 00 00
after activating Sli, force SLI rendering mode to Single-GPU
1 card - https://www.3dmark.com/spy/10136428
Sli - https://www.3dmark.com/3dm/43198900

is this fine for new games playing ? and could you help me hoe details numeric i should edit. in hex editor?