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2x NVidia 3090 GPU's in NON-SLI Config?

Post Date: 2021-10-31

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ExBrit View Drop Down
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  Quote ExBrit Quote  Post ReplyReply bullet Topic: 2x NVidia 3090 GPU's in NON-SLI Config?
    Posted: 31 Oct 2021 at 9:26am
When configuring Aventum top-priced version with Intel Core i9 12000 Series CPU you offer a choice of 2 RTX3090 GPU's in SLI but all the motherboard choices all are NON-SLI, so why not 2 GPU's Non-SLI?


Edited by ExBrit - 01 Nov 2021 at 5:07am
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  Quote MrCheetah Quote  Post ReplyReply bullet Posted: 31 Oct 2021 at 11:25am
Simple answer: Agreed.

Long answer: There's a lack of information/transparency.

For example, the Asus ROG Crosshair VIII Dark Hero (which DS offers on AMD Ryzen systems) does support SLI and CrossFireX. The feature is stated in both the tech specs and user manual. However, DS notes it as "No SLI" in the configurator.

Why?

Probably because Nvidia has dropped SLI control from its drivers.

NVIDIA SLI Support Transitioning to Native Game Integrations (via Tom's Hardware)

I can't find official verification but... It seems the NVLink bridge is still useful, although, strictly dependent on application -- no more trying to utilize even if the app isn't coded.

Again, I do agree the option of NVLinked and non-NVLinked multiple graphics card configurations would be nice. Fortunately, the NVLink bridge has an MSRP of $79.99 -- Maybe $100 marked up. IMO, a tolerable expense when considering a person is already acceptably handing over a significant amount of money on dual RTX 3090s. That is, even at MSRP ($1,500 RTX 3090 x 2, $80 bridge), the additional cost is less than 3%.

Edited by MrCheetah - 31 Oct 2021 at 11:32am
"White lightning": be quiet 500DX white, Asus ROG Strix Z590-E Gaming, Intel Core i7 11700K, 64GB HyperX Fury, EVGA FTW3 Ultra RTX 3090, 2TB WD_Black SN850, Corsair iCue H150i Elite Capellix white
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  Quote ExBrit Quote  Post ReplyReply bullet Posted: 31 Oct 2021 at 11:43am
In my case I would be looking for max GPU abilities as I would be using the machine mainly for Grid Computing ([email protected], [email protected] etc), with the occasional gaming.
I grew to dislike AMD components as I found lots of problems with their drivers after their merger.    Never a problem with Intel & NVidia.  My current machine is 11 years old and wont get Windows 11 as it is hopelessly out of date.


Edited by ExBrit - 03 Nov 2021 at 5:45am
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  Quote Onkel_Ken Quote  Post ReplyReply bullet Posted: 01 Nov 2021 at 4:50pm
MrCheetah,

This is why I like the Digital Storm Forum because of people like you that saves the rest of us research time on these kinds of issues.

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  Quote ExBrit Quote  Post ReplyReply bullet Posted: 03 Nov 2021 at 5:49am
I was hoping a @DigitalStorm official would notice this thread and give buyers the option of 2x GTX3090 (No SLI) or provide a Motherboard with the ability to support them.
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  Quote HockeyBuck Quote  Post ReplyReply bullet Posted: 03 Nov 2021 at 10:17pm
DS is a busy outfit...You can always contact Sales to ask or discuss any special requests. If there is or is not a current Intel 2x SLI board they can help you determine that and cost.
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  Quote ExBrit Quote  Post ReplyReply bullet Posted: 04 Nov 2021 at 6:28am
OK, thank you.
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  Quote Alex Quote  Post ReplyReply bullet Posted: 04 Nov 2021 at 9:05am
From what we've seen the support for NVLink or even two 3090's is lacking on all Intel Z690/Z590 chipsets and also AMD X570. This is due to a spacing issue for the NVLink connector as well.

To get full support, we recommend an Intel X299 or AMD Threadripper configuration.
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  Quote MrCheetah Quote  Post ReplyReply bullet Posted: 04 Nov 2021 at 2:10pm
@Alex: I indeed did not find any mention of SLI/NVLink on the few Z690 Asus boards I quickly searched the specs and manual on. The X570 boards seem to still mention SLI but little or no NVLink. It really does appear Nvidia has put SLI/NVLink in the closet.

So, is the configurator going to be adjusted? It does still offer dual 3090s but because the consumer/prosumer motherboards all indicate "No SLI" the configurator throws an alert. And if/when it is updated, will there be no dual GPU options for the non-workstation systems?

@ExBrit: Fortunately, software such as [email protected] does not require SLI or NVLink to utilize multiple GPUs. However, I can't verify as I don't have any multi-GPU systems at the moment. Additionally, the one final benefit of NVLink, combining/sharing VRAM between graphics cards when necessary, is irrelevant for [email protected]

What about multi-GPU support? | [email protected]

On the system in my signature...

Maximum usage over the past 24 hours (HWMonitor):

GPU: 100%
VRAM: 3%
Frame buffer: 79%
Bus/Interface: 23%

Edited by MrCheetah - 04 Nov 2021 at 2:11pm
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  Quote fwfdfireman Quote  Post ReplyReply bullet Posted: 04 Nov 2021 at 6:47pm
In a report I read somewhere earlier this year, nVidia stated they would no long be supporting SLI.

The guy who was in charge of the SLI division at nVidia had already left their organization.

SO, my thinking is, IF you can find specific specs with a particular software that states multiple gpus would still benifit in that programs performance, dual gpus are pointless UNLESS you need to run more monitors than one card can handle. I know several gamers who run two gpus only because they are running 5-6 monitor set ups for the gaming experience.
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  Quote hoserator Quote  Post ReplyReply bullet Posted: 05 Nov 2021 at 2:46am
I used to be a fan of SLI/NVLink (up to 4 GTX980s), have gone to the mono gpu setup and am very pleased with results. Temps are down and play is good. That only because of the power of the new gpus. Smile
If you are in the numbers crunching (science) programing you probably benefit from multi gpus. There is still a physical connection on the 3090s.

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  Quote ExBrit Quote  Post ReplyReply bullet Posted: 05 Nov 2021 at 7:25am
Thanks everyone.
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  Quote ExBrit Quote  Post ReplyReply bullet Posted: 06 Nov 2021 at 6:33am
As a footnote, I see them now offering  this GPU twice at two different prices, so I wonder if they need to make one of those non-SLI
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  Quote Cretae Quote  Post ReplyReply bullet Posted: 06 Nov 2021 at 2:14pm
Alex has tried to explain that non-SLI is automatic when it's not supported by the motherboard. (Gaming section.) They have other boards in the workstation area that CAN do SLI. That's why it's priced in the configurator. The price differences are for the Founder's Edition vs the Performance Edition.   
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  Quote ExBrit Quote  Post ReplyReply bullet Posted: 07 Nov 2021 at 3:54am
"Other boards" - there is no choice in the configurator unless I change to AMD which I do not want to do.
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  Quote JamesAstro Quote  Post ReplyReply bullet Posted: 07 Nov 2021 at 12:30pm
I've been a fan of SLI for a long time. I had three 480's, three 580's, three 980 Ti's, and two 2080 Ti's. However, I finally gave up on SLI this year, and my new machine has a single 3090. I couldn't be happier!

Fewer and fewer games are supporting SLI, and the games that do frequently have glitches. For example, I'm huge fan of the Tomb Raider series. Supposedly all the recent versions of that game support SLI. However, when I enable SLI in those games I get micro stuttering, flickering textures, and assorted other problems.

Plus, SLI is not as important now that we have GSYNC monitors. Before GSYNC, poorly performing games would suffer from screen tearing (partial frame drawing), and you could really feel it when a game slowed down. That doesn't happen with GSYNC, and I find that games feel really good even when the frame rate drops.

But yes, there are still some games that support SLI well. I would recommend that you research the games that you intend on playing, and make sure they support SLI well. If several of them do, then SLI with two 3090's might make sense. However, there is a good chance that your favorite games won't. Either way, make sure you invest in a good GSYNC monitor. That's a technology that every game supports.

Cheers! And enjoy your shopping. It's always so much fun planning a new gaming computer!
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  Quote MrCheetah Quote  Post ReplyReply bullet Posted: 07 Nov 2021 at 5:37pm
@JamesAstro: You're correct regarding games utilizing multi-GPUs. However, other modern software (e.g., [email protected], crypto mining, Octane Render) is capable of utilizing multi-GPUs without an NVLink bridge or any type of support via the driver. This also includes supporting a mix of GPU models in a single system. Of course, having identical models is beneficial. For example, if you're using Octane for 3D rendering and have a 3090 and 3080 Ti, VRAM usage is limited to 12GB (the lowest amount of all utilized graphics cards). In contrast, you can use an NVLink bridge with dual 3090s to have 48GB of VRAM capacity, but it is a little slower and is limited to certain data types (the rest needs to be stored in system RAM, slower still).

Basically, software developers have been implementing their own multi-GPU management systems for several years already.

P.S. When gaming with multiple GPUs installed... As far as I'm aware, they will be run on whatever graphics card the primary monitor is connected to.

Originally posted by ExBrit

As a footnote, I see them now offering this GPU twice at two different prices, so I wonder if they need to make one of those non-SLI

As @Cretae mentioned, the new options allow customers to select Founders Edition cards (Nvidia's own produced) or "Performance" editions, models from companies such as EVGA, Asus, MSI, Zotac that are designed with higher overclocking in mind (e.g., handle more power).

Originally posted by Alex

To get full support, we recommend an Intel X299 or AMD Threadripper configuration.

Originally posted by ExBrit

"Other boards" - there is no choice in the configurator unless I change to AMD which I do not want to do.

From what I see, both X299 board options are listed with "No SLI". Just three of the Threadripper boards are the only choices. The configurator states PCIe slot spacing is the problem.

@ExBrit: I recommend verifying all of the apps you use have multi-GPU support (outside of SLI/NVLink). If they check out, you'll need to message or call DS if your desire is still to get a rig with multiple graphics cards (at least at the moment).
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  Quote ExBrit Quote  Post ReplyReply bullet Posted: 08 Nov 2021 at 7:41am
Excellent, thank you.
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