gtx 750ti in sli???

[Crankygamesnl]

oke, I now what you guys are all thinking:
"ugh...You can't SLI 2 gtx 750ti...There is no sli bridge etz"

BUTTTT, I have seen multiple videos on youtube were they have done it.
It may be a other way then usual, they still have done it.

So my question is right now, how do I do that?
I am planning to upgrade to a gtx 1060 and really, 2 gtx 750ti for gaming doesnt really make sense but I also run a tech paper in my town with a friend. We are out of ideas and if this works, we can benchmark and review it.
I have no idea how to do it so if anyone can send a link to a video or explain it, thank you.

UPDATE:
Many people seem to think that is it not possible, I almost agree
here are the links to the video i saw.
https://www.youtube.com/watch?v=ieacSfL5cJY&t=95s
and this one:
https://www.youtube.com/watch?v=sCuUMJRcHCY&t=1s
https://www.youtube.com/watch?v=b_6Jny4LUok&t=92s

 

[Math Geek]

i'd suggest going back to youtube and pray they tell you how they did it. since it is not possible, i don't know how they did it.

it is possible they used Ashes of singularity for it's multi-gpu support and benchmarked it that way. only possible way i can think of since i have never seen such a video claiming to sli 750ti's.

good luck but i'm pretty sure this is not possible any other way.

 

[derekullo]

You can also dedicate 1 gpu as a physics processor, but this clearly isn't sli.

You may be able to install both cards and have a game dedicated to run on each card, but again not sli.

You could always benchmark cards that do support sli, although i assume the reasoning for the 750ti was low price.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814487159

EVGA GeForce GTX 950 is $170 currently on newegg, about $50 more than the cheapest 750ti.
Edit: Only $30 more with the $20 mail in rebate.

The geforce 950 does support sli.

http://www.geforce.com/hardware/technology/sli/supported-gpus

 

[13thmonkey]

prime example of why not to believe youtubers.

 

[BurgerandChips66]

I think they are using this: -

"DifferentSLI Auto NVIDIA® Driver Patcher and Signer by Ember"

https://github.com/EmberVulpix/DifferentSLIAuto

"This patcher will automatically patch and sign "nvlddmkm.sys" for NVIDIA® drivers for 64-bit systems to enable SLI™ with different cards."

"To use: -

1. Install original NVIDIA® drivers
2. Put cards together you want to SLI™
3. Reboot
4. Copy original "nvlddmkm.sys" from "C:\Windows\System32\drivers\" and put it in the same folder as the patcher.
5. Run "DifferentSLIAuto.exe" and press patch, if everything went well it will say that patching was successful, if not contact Ember on techPowerUp! and do not continue.
6. Log in as Administrator
7. UAC must be disabled
8. Run Install.cmd
9. Reboot

Windows Test Sign Mode MUST be enabled for the patched drivers to load!"

https://www.youtube.com/watch?v=sCuUMJRcHCY

https://www.youtube.com/watch?v=ieacSfL5cJY

So basically it's some sort of innovative hack/patch to get cards working without an SLI Bridge and without any official driver/software from Nvidia.

Never tried it myself though. Not sure how compatible it is with games.

You'd have to suck it and see!

 

[BurgerandChips66]

Although you don't need to SLI the 750Ti.

Just bios hack it, overclock to >1400MHz and it will run GTA IV at 4K.... https://www.youtube.com/watch?v=ilk0OZSQojE

lol

 

[13thmonkey]

Although you don't need to SLI the 750Ti.

Just bios hack it, overclock to >1400MHz and it will run GTA IV at 4K.... https://www.youtube.com/watch?v=ilk0OZSQojE

lol

Can the 750ti be unlocked to a 1070?

 

[BurgerandChips66]

Normally I would say 'no - don't be ridiculous' but I'm sure at some point in the future there will be a video on YouTube... :lol:

 

[ph0b0s]

Normally I would say 'no - don't be ridiculous' but I'm sure at some point in the future there will be a video on YouTube... :lol:

:lol:

 

[jacobdu215]

I just want to add, it is possible and I have done it.... Its not officially supported but there ARE ways to get around that limitation.

 

[13thmonkey]

Do please explain how then.

 

[Math Geek]

i'd be interested as well since i have never heard of such a way and i read WAY more tech news and info than any human should.

so please, do tell this secret method that only you seem to know

 

[jacobdu215]

Do please explain how then.

i'd be interested as well since i have never heard of such a way and i read WAY more tech news and info than any human should.

so please, do tell this secret method that only you seem to know

https://github.com/EmberVulpix/DifferentSLIAuto/tree/v1.4. In case u wanna see proof:

Nvidia CP: https://imgur.com/0wSXJhU

Fire Strike on SLI GPU: https://www.3dmark.com/3dm/22301275

Fire Strike on single GPU: https://www.3dmark.com/3dm/22301369

And no there are youtube videos on this just no one seems to believe its possible enough to click on them...

Edit: Btw No SLI bridge required but your windows WILL boot in test mode, DO NOT disable test mode otherwise it wont load drivers properly. Also some people reported running into issues installing and was fixed when they disabled the GPUs they ran in SLI in Device Manager so I recommend using iGPU, disable those in device manager after installing the compatible driver version.

 

[13thmonkey]

So you use the driver in github? And the SLI info goes over the PCI-E bus?

 

[jacobdu215]

So you use the driver in github? And the SLI info goes over the PCI-E bus?

Sorry for the extremely late reply. The driver I used was 364.51 on Win 10 from nvidia.com because it was the latest official supported version, after that, I enabled integrated GPU on CPU and in Device Manger of WIndows I disabled the 2 GPUs I ran in SLI for the patch drivers to install. Then ran the github install instructions, reboot and then reenable the GPUs from Device Manager. Then you can use SLI. As for how it works, from what I know (Im not 100% on this) I believe it uses some virtualization technology. Im not sure, you can look through the code if you have time and know what youre doing. On the page it says "DifferentSLI Auto uses uFMOD, Kurapika's C# Native DLL Mapper, and sigScan C# Implementation by atom0s". So maybe that gives a clue?

(remember its not limited to GTX 750 Ti, Ive heard its worked on GT730s for 2way SLI, Although Im only confirming it works on 750 Tis)

 

[Dragos Manea]

I can see the scaling is more then worst, only 50% on the second card in a test that gives more then great support for multigpu, then in games you got how much 15-25% boost with second card? In my opinion does not worth it, the scaling is too bad. A sli compatible card, lets say my case gtx 1080, in 3d mark firestrike single card gets 22-23k points on graphics section and with 2 i get 45-46k points on graphics section, that means a scaling of 99-100%. In some games you get 70% scaling because of shit optimization. Conclusion, this card is not made for sli as you can see the scaling is very bad with a software which scales any compatible multigpu to 100%.

 

[jacobdu215]

I can see the scaling is more then worst, only 50% on the second card in a test that gives more then great support for multigpu, then in games you got how much 15-25% boost with second card? In my opinion does not worth it, the scaling is too bad. A sli compatible card, lets say my case gtx 1080, in 3d mark firestrike single card gets 22-23k points on graphics section and with 2 i get 45-46k points on graphics section, that means a scaling of 99-100%. In some games you get 70% scaling because of shit optimization. Conclusion, this card is not made for sli as you can see the scaling is very bad with a software which scales any compatible multigpu to 100%.

I never recommended, I only did it because I happened to have two of these. I have now dropped one of the GTX 750 Tis and got a 960 as my main because its a much better card.