RTX 3090 SLI/NVLink (Help Please)

[Jarrastafari]

I've watched the GamersNexus video and found a thread elsewhere but can't seem to find any guidance on how SLI/multi-GPU works (or doesn't) for the 3090's.

Since we have our hands on two different brands - a Palit & Zotac (all we could get given the circumstances) - what can we expect in regards to getting this to work? I assume an open bench system, lots of alignment issues and the need for an NVlink/bridge adaptor but can't seem to see what exactly it is we'd need there.

I don't specifically care about game performance (this would be a nice "bonus") as I'm more a game developer than a gamer these days. This is also just a stop-gap until A6000's are available.

Advice most appreciated,
Thanks.

 

[Jarrastafari]

Thanks for the in-depth reply. I'll see how far I get and report back.

Appreciated.

 

[Jarrastafari]

Thanks, PrincessFrosty. My interest in this is in development work so I had read about the support being left to developers (dropped).

Funnily enough, my friend just sent this which is timely...

 

[Jarrastafari]

To get this going I figure I'll need to purchase an NVlink connector, new mobo and PSU.

1. An Asus NVlink should do or do I need a one specifically for 30 series? The one I saw on the nvidia website is gone.

2. I think the only 4-slot spaced board is the Godlike, correct?

4. As always the mystical non-science of PSU rumor dictates I'll need a 2000w PSU but I see these 'tubers pulling it off around 1200-1300w right?

Also, this will be in a neely bought LianLi Dynamic with my air-cooled 2700X until sometime after 5th November when I can (hopefully) get my hands on a 5900 or 5950X and a suitable AIO. What else could go wrong! Hah.

 

[Jarrastafari]

Had ordered an X570 Godlike and HX1200 plus NVlink for Monday delivery but cancelled as I remembered I needed to check the fingers matched up first.

Cards arrived today so I measured the positioning of the fingers on the two cards and they're both around 1.7-1.8mm from the rear mount so I think we should be good to go now.

However, it seems I now can't find a 30' series NVlink anywhere at this time. Bummer!