Problem SLI Msi 970 and INNO3D 970

mikepatton32 · 2 Sep 2016 at 14:28

Hi

I thought id ask here before I smash my PC up...... Ive got an MSI GTX 970 and an INNO3D 970, on the ROG Maximus Ranger 7 board with windows 10 64 bit. Both cards work fine. Ive SLI the cards, they both show up in windows and in the NVidia control panel ( 2 X gtx 970 ) but it wont enable SLI? says sli disabled and wont give me the option to change it. Ive uninstalled the drivers ( removed everything ) tried 2 different SLI bridges but nothing, updated the BIOS of the mobo..... Anyone help?

Thanks

meldarthx · 2 Sep 2016 at 14:38

amd you can usually mix cards for crossfire - with NVidia they don't like you mixing cards - usually has to be exact same model to get sli to work.

mikepatton32 · 2 Sep 2016 at 14:43

Yeah I thought that, but ive SLI before with different makes and its been no problem, seems as though people have mixed views in general on mixing brands.

D1craig · 2 Sep 2016 at 15:18

Are you sure the slightest bridges are working?

mikepatton32 · 2 Sep 2016 at 15:24

Both brand new ones, one came with the ROG board

D1craig · 2 Sep 2016 at 15:48

Please remove this post I've replied to the wrong thread...

z10m · 2 Sep 2016 at 15:58

meldarthx said:
amd you can usually mix cards for crossfire - with NVidia they don't like you mixing cards - usually has to be exact same model to get sli to work.

Nvidia requires same gpu types not cards so it should work fine.

subbytna · 2 Sep 2016 at 16:19

meldarthx said:
amd you can usually mix cards for crossfire - with NVidia they don't like you mixing cards - usually has to be exact same model to get sli to work.

No I don't think that's right. As long as it's a same type of card 970, 980, 980Ti etc...it should be fine to SLI.

LoadsaMoney · 2 Sep 2016 at 16:23

They should work fine together in SLi, being different brands doesn't matter, as long as they are the same cards.

mikepatton32 · 2 Sep 2016 at 16:55

Any idea what the problem could be????? I'm sensing something Windows 10

stooeh · 2 Sep 2016 at 20:33

I expect it is entirely down to the fact you have different 970s (despite Nvidia claiming it should work). I posted about it just a couple of days ago when someone was having issues with their own SLI setup.

ed79 · 2 Sep 2016 at 21:03

stooeh said:
I expect it is entirely down to the fact you have different 970s

I don't think so. I've SLI'd 2 different model 8800GTs and an Inno3D and MSI 670 (both even had different clock speeds) and it always worked fine.

This is a long shot but I have a vague memory of being unable to enable SLI when I had 2 monitors connected to 1 card and my 3rd monitor on the other. SLI enable option only became available when I connected all monitors to the same card.

Dirk Diggler · 2 Sep 2016 at 21:17

I currently run an INNO3D 980ti with an EVGA SC 980ti. I've run the INNO3D with a classified when they were on air. I've run two different 670s in SLI in the past.

Whatever your issue is, it isn't different brands surely?

HoneyBadger · 2 Sep 2016 at 21:32

Are they same or different memory amounts?

Digital X · 2 Sep 2016 at 21:34

The 970 only comes as 4GB.

Dirk Diggler · 2 Sep 2016 at 21:53

Has the system dedicated one of the cards to physx? Not sure if that would disables sli.

stooeh · 3 Sep 2016 at 03:02

Well I wasn't able to SLI an Inno3D 970 with neither a Galax nor a Palit 970 but they all worked fine with 2 of the same brand.
EVGA has a faq entry showing that even different model numbers of their own 970s won't SLI together.

I'm pretty sure this only affects the 970.

Dirk Diggler · 3 Sep 2016 at 06:59

stooeh said:
I'm pretty sure this only affects the 970.

Ah, that makes more sense to me.

mikepatton32 · 3 Sep 2016 at 11:36

Doesn't the pci express run both lanes at 8x? I wonder if the bios is set to 16x for the main slot and not auto clocking it down so they both run at 8x?