What are the chances the 3080s will support SLI?
 
Anyone know if this could ever be possible?

USALion
Only the 3090 for this generation. They are basically phasing out SLI, I guess.

Darn, I guess my twin 1080ti's will be my last SLI rig. I think I will just stick with a single 3080 FTW3 Ultra then

Sadly no. 

Essentially, the main person responsible for giving us SLI, have moved to greener pastures IIRC (I think to Intel). 

Also, very little games supported SLI natively as it is. For most other games you would have had to use Inspector to force SLI sclaing and even then it wasn't a big enough improvement to justify buying a second GPU. 

Had more game developers supported SLI over the last 10-15 years, then it wouldn't be dying the slow death that it is. 

However, GPU's have become far more capable that we don't ever need a second GPU to run anyhow. 

I would say that the 3090 supports NVlink, but no longer SLI anymore, simply because SLI profiles are disabled on the 3000 series cards. Some benchmarks still utilize the NVlink bridge, strictly because they are programmed to leverage two GPU’s, where NVidia isn’t actually enabling the SLI bridge explicitly anymore.

There is literally no physical way to connect an SLI bridge to the 3080, so chances are zero.

Also realize, games no longer have SLI profiles built for them.  So even if it did, it would be worthless.

Hoping some form of multi gpu comes up sometime in the future. I'm a huge fan of multi gpu. Ran multiple AMD Crossfire setups before eventually moving to 780Ti SLI, then Titan X SLI then my current 1080Ti SLI...it's been great. I'm always shocked to read about the problems some folks say they have with it as mine have been essentially flawless in all games that support multi GPU, and even some that don't (that I was able to get working via other profile tweaks). Awesome technology. Feels like a huge downgrade with folks being limited to only one GPU moving forward.

Leaked pictures of a 20gb 3080 board has an sli port

Dabadger84
I think a big reason why they're phasing out SLi is features like DLSS probably don't function ideally with AFR.  And because it's such a small market share at this point, that outside of production uses (which is why the left NVLink on the 3090), it's really not worth them investing their money continuing to develop SLi profiles etc for games, or trying to incentivize game makers to do so, when they could spend that elsewhere.
I remember running Tri-SLi with 3 580s on a triple monitor setup & having the time of my life in Battlefield 3 with it, flying helicopters/jets was so sick with all that view-area... alas, those days are long gone.
Bit off topicish, but is AMD also phasing out Crossfire?  I haven't looked at their stuff since I got rid of my R9 295x2 x2 setup.

AMD actually phased out crossfire already, 5700 series wasn't able to crossfire but can't remember what series it was actually phased out .

0, no SLI fingers.

SLI as we know it? Zero chance.
 
Multiple GPU with DirectX12 and PCIe 4.0? Well it would be possible but unlikely since NVIDIA hasn't really talked about it yet. I could see NVIDIA looking at it in the future though if they need something to really get gamers to upgrade. The biggest thing this generation is not enough people have PCIe 4.0 motherboards to really make it worth it yet. 4080 or 5080 they might if they need a reason to convince people to upgrade away from a 3080. Or it could be that AMD or Intel adds support for it and forces NVIDIA to add support as well.
 
The other issue multi cards support would face in the future would be developer support. If NVIDIA goes DirectX support for it then they are trusting that they can get the game makers onboard with support but at least they have a standard way in Windows to support it now that should work fairly well.

Yeah, SLI is on it's way out. You can do SLI with two 3090s. But a LOT of games are not supporting it. So why waste the money?
 
Last year, I had a rig with 1080 in SLI. And I could see that it made no difference in performance in newer games. So keep your money and buy a beefier card. 

I currently am running two 2080 Ti's in 16X SLI with a X299 Dark and I gotta say that it is still good, so if you can get 2080 Ti's in SLI for cheap that could be another option until the out of stock supply issue is sorted out in a few months. Just make sure you get 2 of the same model so the fingers line up.
 

NewValaric
Yeah, SLI is on it's way out. You can do SLI with two 3090s. But a LOT of games are not supporting it. So why waste the money?
 
Last year, I had a rig with 1080 in SLI. And I could see that it made no difference in performance in newer games. So keep your money and buy a beefier card. 

Technically zero games support SLI with the 3090. SLI is a DX11/DX9 deal, and Nvidia already stated that there won't be any SLI profiles for the 30 series.
 
Now, DX12 and Vulkan can support mGPU - but very, very, very few games over the past 2 or 3 years have seen their game devs actually implement it (like, 2 or 3 games).