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Why is SLI "Dead" - Page 3

post #21 of 270
SLI works fine for me on my y510p.

That said Ill still prefer a better single GPU for the sole reason that emulators dont support mGPU in the slightest. However beyond that I never had any issues with SLI as far as utilization goes, like microstutter.

There were sure games that flat out didnt support SLI and the one that always comes to mind is Arma 2, never forget that one when I had my TriSLI GTX 470 system back in the day.

Even works well in Rainbow 6 Siege and I dont believe it even officially supports SLI, that said people play differing titles and thus have differing experiences.
    
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post #22 of 270
Quote:
Originally Posted by 8051 View Post

Someone recently posted a thread about a game that supported DX12 and multi-GPU that worked well. Sniper Elite? Something like that.

Even Sniper Elite 3 had amazing SLI scale-ability. Worked wonders for 1080s in SLI @ 4K.
 
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post #23 of 270
Sniper Elite actually has better SLI scaling on DX12 than most DX11 games.
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post #24 of 270
Quote:
Originally Posted by renji1337 View Post

Sniper Elite actually has better SLI scaling on DX12 than most DX11 games.
Can confirm. Too bad it's the exception, not the rule.
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post #25 of 270
Problem is 99% cannot afford or do not need or don't want to bother with SLI- remember 99% are still playing on 1080p- no need for SLI at that res.
post #26 of 270
Quote:
Originally Posted by Syan48306 View Post

Why is there so much doom and gloom around SLI? I mean, back in the middle of last year, Nvidia announced that they wont be supporting 3 way SLI anymore and to focus solely on 2 way SLI. IMO, that decision was pretty reasonable. 3 way was always hit or miss but for the most part, 2 way has always been pretty good on AAA titles.

Does it have to do with the way Direct 12 handles multi GPU? Multi GPU support has always been somehwat up to the developers and it's video card companies like Nvidia that are pushing for support - think Nvidia's slogan: "The Way It's Meant to be Played". If it weren't for Nvidia's involvement in the development process, we'd probably never get any SLI support at all.

SLI has always been a niche market but as a SLI user, I don't understand why the attitude towards SLI changed drastically over the last 8 to 12 months. Nvidia even released a HB SLI bridge last year with the introduction of the 1080. It doesn't seem to me that Nvidia is leaving SLI for dead...headscratch.gif
3dfx got multigpu long time ago, named SLI, Ngreedia bought it all. Instead of making SFR they made AFR, 3dfx used Scan-Line Interleave alternating horizontal lines of pixels composing a frame, which I think was SFR.
This AFR is subpar and SFR was never really brought back.

Modern APIs support mGPU, there is no need for SLI or CX let alone a long time for some silly cables and bridges like Ngreedia is still trying to sell.

Because they do not want to innovate SLI anymore they are cutting it's support down in hardware to slowly phase it out IMHO. To keep up with higher resolutions and bandwidth demands on modern cards they've killed 3+ SLI and are using the extra 2nd bridge for 2 SLI, meaning 2 bridges for 2 cards are used.

On the other hand you have CX which needs no such gimmicks and runs via PCIe no problem for a long time. It also runs on any decent AMD GPU pretty much, not just the top tier few.
As long as they keep doing AFR I wouldn't touch any mGPU at all because stutter.
post #27 of 270
Thread Starter 
Quote:
Originally Posted by Zero4549 View Post

You guys are all missing the more important factors:

Vulkan / DX12 are the future of gaming, and neither supports "SLi". Yes, they both support multi-GPU, but on a wholly different level that much be programmed by the game developer, not the GPU manufacturer. This alone means SLi is dead. Things like SLi might yet live, but not SLi itself.

That said, developers have much less incentive, and fewer resources, to develop multi-GPU solutions for their games. This leaves multi-GPU systems like SLi in a pretty rough spot as well. Only the future will prove if multi-GPU ever becomes a major feature in gaming.

It's not like DX11 really had that much more "support" of SLI. It was always the video card manufacturers such as Nvidia or AMD pushing developers to code in proper support for multiple GPUs and then update drivers to make sure games run properly with multiple GPUs. Just because DX12 doesn't support SLI out of the box and it's a new learning curve doesn't make it that fundamentally different from when we first got DX11. It'll take time.

And yes, I guess I'm really coming from the mindset of 4K and running multiple 980Ti's. Sure I can agree my third 980 Ti didn't see much action but for those few games that utilized it properly, it was glorious. Tomb Raider did surprisingly well with 2 and 3 GPU setups pulling triple digits @ 4K.
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post #28 of 270
IMO You see good 2 way SLI scaling in most games.

Battlefield 1 is pretty amazing with SLI.

I don't think it will ever die, software developers just need to stop being so lazy. Hardware is so much farther ahead than software at this point.

Cry-engine and Frostbite games almost always work well with SLI.

The only games I know of recently that didn't support SLI was just cause 3 and tomb raider, and now tomb raider has decent SLI scaling.



From what I heard SLI could be very important for good VR so that could always be a thing too.
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post #29 of 270
Imo when getting in 1080ti country, alot of games are going to be bottlenecked by CPU before GPU, not talking AAA Ubisoft, or Tomb raider etc, idk about those.

Talking about games like Arma 3, Squad, etc less developed games, that tend to be problem childs performance wise.
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post #30 of 270
Quote:
Originally Posted by dlewbell View Post

If you're buying new, & plan to SLI from the start, it only makes sense with the top end card. Anything less, & often better off buying the next level up single card, since it's guaranteed to work with everything, instead of only being supported by a small subset of games. If you're using an older card, there's an argument to be made that buying a second one used & going SLI is worth it over spending more for a newer card, but with NVidia having limited SLI to only high end cards, that's not going to be an option for a large segment of the population.

I've personally only had limited experience with SLI, but it left me underwhelmed. My cousin & I both have GTX 1070s, but she has a 4K monitor (I'm on 1080p or VR). I brought my GTX 1070 over to her house to see what kind of benefit she would get from SLI now or that I might get in the future. We found that the games she had that could benefit from SLI didn't support it, & the ones that supported it were already running well enough that they didn't need it. I would assume that with a larger games library we would have found a few games that would make it worth having, but it really didn't make a strong case for why we should care.

In theory, it has potential, but the price/performance argument just isn't there. It's the same problem with custom water cooling loops. They look awesome, & do allow for somewhat higher overclocks, but for the money you have to spend, you're typically better off just buying a more powerful piece of hardware first if you can.

The Theory is that you spend more money at start up. Watercooling is expensive initially, but overtime can be adapted to what you need later on.

Buying a single card now (1080ti) and purchasing another later on when the price drops for SLI isn't a bad Idea.

TCO
     
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