jPup omg
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/25 12:17:42
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gimeno
Given the power requirements of the 3080/3090 and the physical size of these monsters, I don't believe Nvidia intends for this to be an option.
It's the only 3000 series card that supports SLI
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mchang1984
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/25 12:36:58
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The RTX 20 series carts like 2080 Ti are still working fine with SLI. One way to check is open MSI afterburner then turn on Overlay. If you see the GPU usage being about even on both then SLI is working.
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advancedlamb
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/25 12:40:49
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DrMadness1987
How you gonna buy 2 when your site is such trash can't even buy one. Sat at finalizing order for 40 mins this morning clicking place order for the product to finally go out of stock. Great job!
could've been worse, you could've been there at the exact moment it refreshed, pressed add to stock, and then gotten it removed for out of stock even though, 10 minutes later, Jacob was claiming on Twitter that 'there is still stock'.
What if I said that one's entire life had been decided by fate? That every single one of your actions, from the minute to the monumental, stemmed not from your own choices, but had already been decided upon? That life being a journey of limitless possibilities was but an illusion, and no matter how fiercely man struggled, he stood at the mercy of a long-established path? The wealthy shall know their riches. The needy shall starve on the streets. The wicked shall be wicked, the righteous just. The beautiful, the hideous, the strong, the frail, the fortunate, the miserable... and finally, the victors and the defeated. What if I said that all such things had been carved into stone eons ago, allowing for no divergence? If so, sinners have nothing to answer for, nor do saints have any true virtue to their name. What if I said that not a single action is carried out of one's own volition, but had been decided long ago? That we are merely adrift in the current of time? Tell me, would yo
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ngh5833
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/25 14:10:30
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advancedlamb
DrMadness1987
How you gonna buy 2 when your site is such trash can't even buy one. Sat at finalizing order for 40 mins this morning clicking place order for the product to finally go out of stock. Great job!
could've been worse, you could've been there at the exact moment it refreshed, pressed add to stock, and then gotten it removed for out of stock
even though, 10 minutes later, Jacob was claiming on Twitter that 'there is still stock'.
This is exactly what happened to me. I emailed customer support and they basically told me to suck eggs.
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irakandjii
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/25 15:48:03
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I suspect the SLI decommissioning is related to the difficulty and programming complexity of trying to compute Ray Traces across multiple GPU's without the ability to use shared memory.
Frankly to the best of my knowledge, there is no easy way to calculate a ray across multiple GPU's or to allocate in real time each ray trace to an individual GPU. SLI is really targeted at raster operations where a frame can be easily split by scan line (for example). Applications like data science, AI deep learning ... etc. can use parallelism to take advantage of multiple GPU's. Since these are tasks that the 3090 is designed for, it makes sense to provide the capability.
So in short, SLI makes sense for the 3090 use case, but not GPU's principally targeted at gaming like the 3080.
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gimeno
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/25 17:41:33
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pau164
gimeno
Given the power requirements of the 3080/3090 and the physical size of these monsters, I don't believe Nvidia intends for this to be an option.
I think they do for AI and other edge use cases. I'm sure CERN, IBM or some other enterprise could chain a bunch of 3090s together lol
Good point, I was only thinking about standard gaming setups, and I forgot about AI and super-computing configurations.
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Sajin
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/25 17:46:07
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Looks like the two users who have 3090 sli working on 3dmark didn't run any firestrike ultra tests as the profiles are being ignored for dx11 apps.
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gimeno
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/25 17:48:53
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jPup omg
gimeno
Given the power requirements of the 3080/3090 and the physical size of these monsters, I don't believe Nvidia intends for this to be an option.
It's the only 3000 series card that supports SLI
Yeah, I'm aware. The problem with SLI of these cards is that you'll need 1000W (maybe 1300W) PSU, and that doesn't even consider cooling, which a card drawing 300-400W will need! We can beef up the PSU and use hybrid/water-cooling cards, but then you're talking a 240mm rad for each GPU and a 240mm rad for the CPU, and I just don't see how people are gonna fit that unless they move to something more like an open-air test-bench.
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z999z3mystorys
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/25 17:50:45
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I remember something like this when 3 and 4 way SLI was dropped to be only applied to benchmarks, even with games that had 3 way SLI profiles for the previous gen GPUs, it just wasn't allowed with the new generation of cards, regardless of if it would work or not.
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chosn1
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/25 19:44:02
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gimeno
Given the power requirements of the 3080/3090 and the physical size of these monsters, I don't believe Nvidia intends for this to be an option.
Hard to believe they would have included the ability to connect if they didn't.
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Baasha
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/25 23:03:31
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this is truly shocking. I thought it would be 'backwards compatible' so to speak with older games so that we can play in native 8k at pretty good framerates. why on earth would they gimp the cards like this?
they have truly killed off SLI for all intents and purposes.
ugh...
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Sajin
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/25 23:12:31
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Baasha
this is truly shocking.
Yep. 
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dcell
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/25 23:38:36
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I hated my SLI build a long time ago.
And that was when a lot of games actually supported it.
I was so happy to get back to a single card.
What kind of a gaming rig are you building that you would even need 2 RTX-3090's linked up?
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schweibreezy
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/26 00:52:43
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Sajin
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/26 00:53:45
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schweibreezy
Do I have to?
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chosn1
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/26 10:10:13
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pau164
gimeno
Given the power requirements of the 3080/3090 and the physical size of these monsters, I don't believe Nvidia intends for this to be an option.
I think they do for AI and other edge use cases. I'm sure CERN, IBM or some other enterprise could chain a bunch of 3090s together lol
That would be sweet, but boy would it pull some serious power.
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bayshun
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/26 10:26:19
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I had heard that Nvidia was going to be refocusing on SLI with the 3000 series, but it looks like that isn't going to be the case. But damn, $3k+ for two graphics cards. 
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gimeno
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/26 11:26:39
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chosn1
gimeno
Given the power requirements of the 3080/3090 and the physical size of these monsters, I don't believe Nvidia intends for this to be an option.
Hard to believe they would have included the ability to connect if they didn't.
As another mentioned, there are AI and super-computing applications that the 3090 may be used for, not just gaming.
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jmehalik
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/26 12:09:55
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enewt
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/27 02:29:06
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SLI of the 3090 seems like tremendous overkill unless you are doing high level AI work.
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Hoggle
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/27 02:46:25
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aj_hix36
This biggest problem is there is no way to override this behavior. Profiles allowed us to hack solutions together. Now, you must rely on the developer (read this as EXTREMELY UNLIKELY)
Since now it comes down to support for a DX12 feature it really comes down to how hard it is to make SLI work with new games. In theory DX12 should make it easier for a developer to support then the NVIDIA SLI was and should be more like supporting a multi core processor. That said it would still take time for a developer to support it but really it could just be the way a game engine is wrote to have it just work with a single GPU or multiple. Of course we haven't really seen games make use of this feature yet and DX12 has been around for a few years.
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tasso11000
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/27 08:17:58
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SLI is certainly dead. Ever since 2016 less and less games began to support the feature.
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logan1052
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/27 11:55:51
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Personally i think SLi isnt needed for the 3090
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williamr86
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/27 16:25:17
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I mean, single card solutions will make it easier for optimization, but not having the option sucks for some people who would rather go overkill on their builds.
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Ogredose
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/27 17:07:02
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At least Nvidia informed us that they were killing SLI before the 3090’s became “available”
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Gunzert
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/27 20:30:19
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Can't even imagine SLI these beasts (size-wise).
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q5sys
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/28 09:06:51
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the_Scarlet_one
Sajin
Don’t know if sli is going to work in 3dmark atm.
This. Since SLI profiles have been removed, will there be a way to enable the NVlink connection for benchmarks?
I don't have a 3000 series to test on, but you should still be able to manually enable it at the command line using the nvidia-smi command like nvidia-smi nvlink -sc 0bz . pau164
gimeno
Given the power requirements of the 3080/3090 and the physical size of these monsters, I don't believe Nvidia intends for this to be an option.
I think they do for AI and other edge use cases. I'm sure CERN, IBM or some other enterprise could chain a bunch of 3090s together lol
Places like CERN and IBM, will wait for Tesla/Quadro cards.
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hallowen
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/28 11:12:44
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AHowes
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/28 11:54:34
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Cant really lose but the cost of that sli adapter (where they call it now). Be pretty dang easy to resell that card.. though with all that crap going on I'd try bin on ebay or just sell to a friend.
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Sajin
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Re: Thinking about going SLi 3090? Might want to think again.
2020/09/28 12:18:42
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