8-Way~ SLI

[LC NOoSE IV]

Is it possible to somehow use an eight way SLI setup or have a two cpu system run two four way SLI working together? If it is possible I would like to see a setup, even if it uses low end CPUs and GPUs. ^w^;

[Nena Trinity]

Yes but impractical! 4 Titan X or 980Ti then you are stuck with CPU bottleneck...

[Fictionvl]

HUGE bottleneck, thats what will happen, but its very useless, as nothing is optimized for 8-way SLI, I doubt that there is 

[Tagiau]

I mean you could, but most server motherboard don't support sli/crossfire. 

[blu4]

Is it possible to somehow use an eight way SLI setup or have a two cpu system run two four way SLI working together? If it is possible I would like to see a setup, even if it uses low end CPUs and GPUs. ^w^;

Why?

[FreebaseJosh]

I've never seen anything more than 4 way sli.

[TheAmazingCookieFromSquare]

Yes but impractical! 4 Titan X or 980Ti then you are stuck with CPU bottleneck...

 

 

Is it possible to somehow use an eight way SLI setup or have a two cpu system run two four way SLI working together? If it is possible I would like to see a setup, even if it uses low end CPUs and GPUs. ^w^;

Dula $4000 18 Core Xeon chips lol

[TheGamingBarrel]

Dula $4000 18 Core Xeon chips lol

Nope, 18 Cores doesnt matter for gaming, and otherwise you dont need SLI, you just need 8 Slots

[You_are_a_cunt]

Afaik the max is 4-way SLI

Not sure you even have enough lanes for an 8-way <_<

[Aniallation]

Is it possible to somehow use an eight way SLI setup or have a two cpu system run two four way SLI working together? If it is possible I would like to see a setup, even if it uses low end CPUs and GPUs. ^w^;

SLI does not work in setups larger then 4-way. However you can run as many GPUs as you want individually (not SLI) for computing power, as long as you have enough lanes.

[Equilibrium_FOOL]

I think there was a motherboard manufactured for use in Bitcoin mining.  It had many, although not eight, PCI slots.

 

-Edit-

It did not use SLI I believe.

[ICantThinkOfAnyGoodName]

Yes but impractical! 4 Titan X or 980Ti then you are stuck with CPU bottleneck...

Actually both SLI and crossfire support a maximum of 4 GPUs.

[alpenwasser]

SLI does not work in setups larger then 4-way. However you can run as many GPUs as you want individually (not SLI) for computing power, as long as you have enough lanes.

^This.

There's a guy who built an SR-2 machine and got it to run with seven GTX580s here:

http://forums.evga.com/tm.aspx?m=2053083

Be aware that such setups are usually very finicky and there are few guarantees

that it'll work unless you start using more professional hardware and the corresponding

drivers (possibly even customised ones).

Then there's of compute stuff like this for example:

http://arstechnica.com/security/2012/12/25-gpu-cluster-cracks-every-standard-windows-password-in-6-hours/

However, as said, that has nothing to do with SLI as such.

[misthosg]

http://www.tweaktown.com/news/43392/geforce-gtx-titan-gpus-4-way-sli-powered-super-bowl-halftime-show/index.html

Here is 4 Titan Z in SLI. It is on x99.

[Elapo]

^This.

There's a guy who built an SR-2 machine and got it to run with seven GTX580s here:

http://forums.evga.com/tm.aspx?m=2053083

Be aware that such setups are usually very finicky and there are few guarantees

that it'll work unless you start using more professional hardware and the corresponding

drivers (possibly even customised ones).

Then there's of compute stuff like this for example:

http://arstechnica.com/security/2012/12/25-gpu-cluster-cracks-every-standard-windows-password-in-6-hours/

However, as said, that has nothing to do with SLI as such.

 

It's also done for bitcoin mining, they even have cheap motherboards specifically made to take a bunch of GPU's

 

Like this one

[Nena Trinity]

Actually both SLI and crossfire support a maximum of 4 GPUs.

I was sure there was no limit! Why did they even make limit?

[Aniallation]

I was sure there was no limit! Why did they even make limit?

Scaling would suck ass (it already does at 4-way)

[Aniallation]

http://www.tweaktown.com/news/43392/geforce-gtx-titan-gpus-4-way-sli-powered-super-bowl-halftime-show/index.html

Here is 4 Titan Z in SLI. It is on x99.

Pretty sure the SLI part is incorrect. You can't run more then two Titan Z in proper SLI, and that machine was used to render a high-resolution animation (not gaming), which doesn't require the cards to be in SLI.

[Knaj]

It's definitely possible you can do it, you would just have to somehow manage to engineer your own code to support the 8-way SLI and get an expensive af motherboard for it 

[Nena Trinity]

Scaling would suck ass (it already does at 4-way)

I guess that makes sense!

[Footy]

the biggest issue with SLI is PCI lanes and speed.

However 8 way SLI may be possible soon, NVlink!!!

 http://www.kitguru.net/components/graphic-cards/anton-shilov/nvidia-pascal-architectures-nvlink-to-enable-8-way-multi-gpu-capability/

[Footy]

Scaling would suck ass (it already does at 4-way)

the scaling isnt that bad, you lose a few %

[Alurit]

for workstation and server applications it may be possible, and using more then 4 card without sli is possible, but for gaming: I think no and it is impractical

[StormEye]

I dont think some people get the difference of just sticking in a card in there vs actually running them in SLi.