No more 3 way sli or 4 way sli supported on New GeForce Nvidia GTX 1080. Only 2 way

[chispy]

Over at the Nvidia GeForce Forum Manuel Guzman nvidia employee posted this information as a fact: Yes the GeForce GTX 1080 supports 2 way SLI. There are no plans for this to change in the future.





Confirmed also by reviewer Elric's Duck OC on his youtube channel Tech Of Tomorrow.


7:05 on the video here: https://youtu.be/uWvmt9wk0n4?t=427


On eVGA forum there is a tread on fire about this sad , very sad news of no more support for 3 way sli and 4 way sli, As it stands right now it seems that nvidia will support from now on ONLY 2 Way SLI. There is an eVGA forum administrator that posted this information also at eVGA forum:

The new HB Bridges have two fins (to fit the two teeth on the 1080), unlike the older SLI bridge standard which only has one. Therefore, the 1080 only supports up to 2-way SLI.

Based on the three lengths of HB Bridges, they can be used in three configurations (2-slot, 3-slot and 4-slot). Along with this picture:





http://forums.evga.com/Nvidia-only-s...-m2477545.aspx


eVGA employee EVGATech_ChrisB wrote on eVGA forum this:






eVGA Product Manager JacobF wrote on eVGA forum this:






Overclock.net has also a big tread about it here: http://www.overclock.net/t/1599891/e...-hb-sli-bridge





Awaiting more information on this sad news from Nvidia.

[Denial]

It sucks but honestly its probably not worth Nvidia doing extensive Q/A on a setup that less then 50 people in the world use and that has terrible scaling regardless. Also there was a rumor that you could still do 4 way SLI if you used the low bandwidth bridges, has that been completely debunked?

[chispy]

Originally Posted by Denial

It sucks but honestly its probably not worth Nvidia doing extensive Q/A on a setup that less then 50 people in the world use and that has terrible scaling regardless. Also there was a rumor that you could still do 4 way SLI if you used the low bandwidth bridges, has that been completely debunked?

Awaiting another official statement from nvidia on this matter , let's wait and see what else they have to say , Jacob F eVGA Product Manager said that the older bridges will work with the new cards but i am sure he meant for 2 way SLI ( and at a slower speed only ) as nvidia officially will not support 3 way sli or 4 way sli no more !

[Hilbert Hagedoorn]

Nvidia does indeed stop supporting 3 and 4-way SLI for Pascal and newer products. But there actually will be a way to do 3 and 4 way SLI, I'll explain it in the upcoming 1080 article.

[chispy]

Originally Posted by Hilbert Hagedoorn

Nvidia does indeed stop supporting 3 and 4-way SLI for Pascal and newer products. But there actually will be a way to do 3 and 4 way SLI, I'll explain it in the upcoming 1080 article.

Thank you for the reply Hilbert i will wait for your article , my guess is thru driver hacks

[Denial]

Originally Posted by Hilbert Hagedoorn

Nvidia does indeed stop supporting 3 and 4-way SLI for Pascal and newer products. But there actually will be a way to do 3 and 4 way SLI, I'll explain it in the upcoming 1080 article.

Are you going to do a Low vs High bandwidth bridge SLI comparison? I'm kind of curious how much of a difference it makes.

[HeavyHemi]

Originally Posted by Hilbert Hagedoorn

Nvidia does indeed stop supporting 3 and 4-way SLI for Pascal and newer products. But there actually will be a way to do 3 and 4 way SLI, I'll explain it in the upcoming 1080 article.

I kinda alluded to this on the EVGA forum. Nvidia has already gone this route of not 'officially' supporting SLI configs that are still doable.

[Hilbert Hagedoorn]

Originally Posted by Denial

Are you going to do a Low vs High bandwidth bridge SLI comparison? I'm kind of curious how much of a difference it makes.

Yes, it I can visualize it very well with FCAT (if it makes a difference) but it might take a while. Partner boards still need to arrive + NV still needs to send me that new SLI bridge.

[Denial]

Originally Posted by Hilbert Hagedoorn

Yes, it I can visualize it very well with FCAT (if it makes a difference) but it might take a while. Partner boards still need to arrive + NV still needs to send me that new SLI bridge.

Ya, PC Perspective said they didn't get their SLI bridge in yet either. Running out of time =(

[GeniusPr0]

Originally Posted by Hilbert Hagedoorn

Nvidia does indeed stop supporting 3 and 4-way SLI for Pascal and newer products. But there actually will be a way to do 3 and 4 way SLI, I'll explain it in the upcoming 1080 article.

I love you

[evilkiller650]

Originally Posted by Hilbert Hagedoorn

Nvidia does indeed stop supporting 3 and 4-way SLI for Pascal and newer products. But there actually will be a way to do 3 and 4 way SLI, I'll explain it in the upcoming 1080 article.

Upcoming article!!
Oh... so you already got your hands on one?

I am looking forward to your review. They are always in-depth, clear and great quality

[Stormyandcold]

Originally Posted by Denial

It sucks but honestly its probably not worth Nvidia doing extensive Q/A on a setup that less then 50 people in the world use and that has terrible scaling regardless. Also there was a rumor that you could still do 4 way SLI if you used the low bandwidth bridges, has that been completely debunked?

I read that real number is around 1000. Still a very small minority.

[Stormyandcold]

Originally Posted by Hilbert Hagedoorn

Yes, it I can visualize it very well with FCAT (if it makes a difference) but it might take a while. Partner boards still need to arrive + NV still needs to send me that new SLI bridge.

Please Hilbert, can you add GTX980 SLI numbers to the results? Cheers!

[RavenMaster]

The thing is, adding a 2nd card to your first one almost doubles your performance but when u add a 3rd card, that 3rd card only gives u approximately 15% more performance. When you add a 4th card to your 3-Way SLI, that 4th card usually only gives u an extra 5%.

Does +20% performance really justify buying 2 more cards on top of the 2 you already own? I would say not. Coz a 3rd and a 4th card is gonna set you back another 1000 bucks most likely.

[Stormyandcold]

Originally Posted by RavenMaster

The thing is, adding a 2nd card to your first one almost doubles your performance but when u add a 3rd card, that 3rd card only gives u approximately 15% more performance. When you add a 4th card to your 3-Way SLI, that 4th card usually only gives u an extra 5%.

Does +20% performance really justify buying 2 more cards on top of the 2 you already own? I would say not. Coz a 3rd and a 4th card is gonna set you back another 1000 bucks most likely.

1000 bucks from 1000 people = 1 million bucks Is that enough to provide the driver support for it?

[evilkiller650]

Well, I imagine the type of people who can afford to buy 3/4-way highest end GPUs, probably don't have any money worries at all

[Fender178]

Only a few users use 3 way or 4 way SLI any way. Based on what Hilbert have said about there being a way to use 3 and 4 way SLI will keep that market alive.

Why waste time testing more than 2 cards when it is a small market.

[LesserHellspawn]

Well, I am in that minority, and once you go tri, you won't look back to dual. I'm loving it. I will be skipping Pascal though. My cards will be powerful enough well until Volta comes out. Though adimittedly the lower power consumption of Pascal is appealing.

[holystarlight]

wonder if this explains why the new x99 motherboards have crappy PCIE port spacing? for 3 way SLI, just a theory lol.

[Reddoguk]

Even though it is a very small amount of people you'd still think Nvidia would want to sell those extra few thousand cards.

It must be such a pita to do that they are willing to lose sales/money over it.

It might also help AMD if they can get 4 way working.

For example what if 3-4 cheap AMD cards can beat Nvidia's best 2-way cards?

[nz3777]

I really wonder what intentions they have with this>? How could it hurt Nvidia in any way if someone wants to run 3 or 4 way sli? I cannot understand the logic behind it, isnt that more money in there pocket?

[vase]

Originally Posted by nz3777

I really wonder what intentions they have with this>? How could it hurt Nvidia in any way if someone wants to run 3 or 4 way sli? I cannot understand the logic behind it, isnt that more money in there pocket?

multi-gpu with 2 or 3 or 4 cards will still be very present!
supporting SLI costs money.
-> profiles for each game need to be created, tested, released, fixed etc.

with vulkan and DX12 you will have multi-gpu utilization without having to take care of a SLI mode.

it's just the next step towards api-/engine-managed multi gpu.

they dont want to deal with this stuff anymore.
until the end of the year games will mainly come out with support for 2-3 apis (vulkan, dx12, dx11)...
after that it will be 95% dx12 and/or vulkan
so no reason to continue with SLI if you can drop that load onto the gamedevs.

[bemaniac]

Having only used tri-crossfire once and always dual sli or crossfire the rest of the time I welcome this change. 2 card SLI will get the full driver team focus and releases will be quicker. Benchmarking is a hobby or fun passtime and now more unskilled normal 9-5 office working people like me will be able to attain the best setups too knowing the price caps out at £1200 for 2 of the worlds best cards rather than £5000 for 4 of the worlds best.

[Geryboy]

it is supossed to give more performance in 2 way sli....

2 way was like 170%

3 way like 105% increase.

If they can go 185% - 190% scaling with these it is not much of a loss and in my interest. let's see.

edit: I wonder why they still use SLI birdges, AMD stated that pci was fast enough to handle it, NVIDIA doesn't seem to agree...

[davido6]

im guessing this helps AMD quite a lot HWBOT will also be taken over by AMD cards to lol