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Linking two RTX 3090 but from different brands, is this doable?

I have this problem, I need to know whether I better should sell my first bought RTX 3090 which is an Inno3D iChiLL x4, OR nvlink that Inno3D with my second already bought Aorus Master. I am worried about

- if the system will be stable or not

- if there should be some drivers incompatibilities or any form of instability

- Can I use a full 48GB VRAM system?

- and if can join both cards hdmi and display ports which in total would be 10 (6+4)

Should I sell the Inno3D or should I NVlink them?

The thing about why I bought different brand cards is because a mistake, so blame on me for doing it, but I can still resell the Inno3D. I really like the Aorus master. On final note, I don't care if both cards clock speeds gets 'bottlenecked' or whatever speed problems, I just care about the VRAM and the ports and of course system stability. Thanks.

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What are you using the cards for? sli is dead, so I woudln't run sli here.

 

NVLINK is kinda gimped on geoforce cards, so you can't really do the shared vram and other things that need high speed vnlink.

 

 

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@Electronics WizardyI just need to know if the system won't crash or if at least there will be a 15% of increased performance and by last if I can used those 10 ports on the same machine. I'm being direct, money is not a problem.

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12 minutes ago, j3w1 said:

I have this problem, I need to know whether I better should sell my first bought RTX 3090 which is an Inno3D iChiLL x4, OR nvlink that Inno3D with my second already bought Aorus Master. I am worried about

- if the system will be stable or not

- if there should be some drivers incompatibilities or any form of instability

- Can I use a full 48GB VRAM system?

- and if can join both cards hdmi and display ports which in total would be 10 (6+4)

Should I sell the Inno3D or should I NVlink them?

The thing about why I bought different brand cards is because a mistake, so blame on me for doing it, but I can still resell the Inno3D. I really like the Aorus master. On final note, I don't care if both cards clock speeds gets 'bottlenecked' or whatever speed problems, I just care about the VRAM and the ports and of course system stability. Thanks.

I recommend just selling the inno card and just using the arourus card. Running 2 cards in sli won't give you much extra preformence in games in fact you might see dips in preformence. If you do 3d rendering and want the best possible preformence you probably should have gotten a quadro rtx card. But if you do want to use your 3090s in sli still I think you should be ok running 2 different cards but I'm not an expert so either do some googleing or get help from another forum member.

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7 minutes ago, Electronics Wizardy said:

What are you using the cards for? sli is dead, so I woudln't run sli here.

 

NVLINK is kinda gimped on geoforce cards, so you can't really do the shared vram and other things that need high speed vnlink.

nVidia naming schemes confusing people since always xd

 

NVLink is a Quadro only feature, only the connector is shared so for all intents and purposes the RTX 3090 indeed only has SLI which like stated is discontinued.

 

OP: Buying 2 RTX 3090 unless you have ultra specific hardware acceleration task that can benefit from it would be a giant waste of money for "bragging rights" that are more likely to backfire as people will mock you for it.

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Just now, j3w1 said:

@Electronics WizardyI just need to know if the system won't crash or if at least there will be a 15% of increased performance and by last if I can used those 10 ports on the same machine. I'm being direct, money is not a problem.

It won't crash, you can mix gpus if you want.

 

 

YOu can use the ports if you don't use sli.

 

Performance depends on the programs used, and you haven't said the programs your using.

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1 minute ago, kucharczykt said:

I recommend just selling the inno card and just using the arourus card. Running 2 cards in sli won't give you much extra preformence in games in fact you might see dips in preformence. If you do 3d rendering and want the best possible preformence you probably should have gotten a quadro rtx card. But if you do want to use your 3090s in sli still I think you should be ok running 2 different cards but I'm not an expert so either do some googleing or get help from another forum member.

Yeah I need answers like that, what if I should still want to keep both cards. If there is someone who has tried it with two different 2080Ti. I'd appreciate that.

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9 minutes ago, Electronics Wizardy said:

It won't crash, you can mix gpus if you want.

 

 

YOu can use the ports if you don't use sli.

 

Performance depends on the programs used, and you haven't said the programs your using.

Have you tried this before?. 

 

@Electronics Wizardy I'll be very honest, I will brag of course, money is not a problem again.

 

Honestly my interests are these:

60% -> using both 10 hdmi and DP ports

30% -> no system crashes or instability

5% -> at least a slight improve of performance suffice me for deciding not to buy the Inno3D (How can you tell the perfomance will decrease? Someone in this post wrote that)

5% -> Using 48GB of VRAM

 

PS: I'll check Linus's videos on NVlink and SLI, currently my VPN is on maintenance, so need to wait some time

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OP, you need to tell us what applications you're trying to use those cards for. Anyway, as general answers:

24 minutes ago, j3w1 said:

if the system will be stable or not

If your case is well ventilated and your PSU is enough to handle both, then yes.

24 minutes ago, j3w1 said:

- if there should be some drivers incompatibilities or any form of instability

No.

24 minutes ago, j3w1 said:

Can I use a full 48GB VRAM system?

Depends on the application. For ML and some rendering software, yes. For games, no.

25 minutes ago, j3w1 said:

- and if can join both cards hdmi and display ports which in total would be 10 (6+4)

Yes, and you don't even need the nvlink bridge for that.

 

8 minutes ago, Princess Luna said:

nVidia naming schemes confusing people since always xd

 

NVLink is a Quadro only feature, only the connector is shared so for all intents and purposes the RTX 3090 indeed only has SLI which like stated is discontinued.

 

OP: Buying 2 RTX 3090 unless you have ultra specific hardware acceleration task that can benefit from it would be a giant waste of money for "bragging rights" that are more likely to backfire as people will mock you for it.

The 3090 does have NVLink. I'm just not sure how many bricks are available.

FX6300 @ 4.2GHz | Gigabyte GA-78LMT-USB3 R2 | Hyper 212x | 3x 8GB + 1x 4GB @ 1600MHz | Gigabyte 2060 Super | Corsair CX650M | LG 43UK6520PSA
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Lenovo N23 Yoga

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10 minutes ago, igormp said:

OP, you need to tell us what applications you're trying to use those cards for. Anyway, as general answers:

If your case is well ventilated and your PSU is enough to handle both, then yes.

No.

Depends on the application. For ML and some rendering software, yes. For games, no.

Yes, and you don't even need the nvlink bridge for that.

 

The 3090 does have NVLink. I'm just not sure how many bricks are available.

Damn, you are the man who brings the answers, thanks for that.

 

Quote

OP, you need to tell us what applications you're trying to use those cards for. Anyway, as general answers

I don't care about games performance, I am more on the workstation mindset side, So if you do tell that ML and AI or some rendering software would do better, then that is enough for me to decide not to sell the Inno3D. Thanks!

Quote

If your case is well ventilated and your PSU is enough to handle both, then yes.

Well, I have an Obsidian 1000D , so space is not a problem. I'm even thinking about putting the Aorus above the Inno3D since the Aorus card have a temperature LED screen, so I can easily tell if they are frying one another, If both cards are too hot, then I think I will do some custom water cooling loops

Quote

No.

I'm 100% sure I won't sell it then

Quote

Yes, and you don't even need the nvlink bridge for that

Nice to read that, well nvlink would be a pretty toy to have to play with since the ports are the main thing I want to use. My next setup will be a 10 monitor workstation then. 

 

Edit: About what applications I do use: Just think about what you can do with a 3990X , I am planning on everything from ML to rendering too, currently I use it for programming of whatever, (I know you are thinking how much money wasted), About games I play like twice thrice a month so I don't care that much about them. FINALLY then, two (whatever way) linked DIFFERENT BRAND 3090s will do some good, then I won't sell the second mistakenly bought Inno3D 

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Gamers Nexus on YouTube linked two different brand 3090s for a SLI test, you should watch the whole thing start to finish as the whole video is very enlightening (941W under load!!!)

 

 

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1 minute ago, FaxedForward said:

Gamers Nexus on YouTube linked two different brand 3090s for a SLI test, you should watch the whole thing start to finish as the whole video is very enlightening (941W under load!!!)

 

 

Thanks so much for that, I will check it once my VPN recovers from maintenance

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6 hours ago, j3w1 said:

I don't care about games performance, I am more on the workstation mindset side, So if you do tell that ML and AI or some rendering software would do better, then that is enough for me to decide not to sell the Inno3D. Thanks!

Then you won't even need a nvlink bridge, since it will net you a max of 10% performance, but mostly won't make any difference.

FX6300 @ 4.2GHz | Gigabyte GA-78LMT-USB3 R2 | Hyper 212x | 3x 8GB + 1x 4GB @ 1600MHz | Gigabyte 2060 Super | Corsair CX650M | LG 43UK6520PSA
ASUS X550LN | i5 4210u | 12GB
Lenovo N23 Yoga

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