30 réponses à ce sujet

[Slapstick83]

This summer I bought a rig that I was sure would last me a long while. Intel 4790K clocked at 4.4 gHz and GTX 780ti, 16gb ram and ofc ssd. I've also got a 2560x1440 gsync monitor (which admittedly eats a good chunk of frames compared to a 1080p monitor). Happy as a kid in a candystore when I got it! :-)

On "high" settings I still only get 40-60 frames depending on location, so I've ended up somewhere between medium and high since anything below 60 is very sluggish and stuttery in this game despite the gsync. I'm not terribly happy about that.

So I'm considering buying another 780ti and better psu, but it's not exactly free. I'm really wondering if I should I get SLI for this game? I hear it's not without issues so I'm wondering what experiences people have with that kind of setup. Is it worth it?

[NRieh]

I can only tell you this. I'm not buying another SLI config again, ever, unless I'm absolutely forced to by some evil circumstances.

 

Yes, it sounds like a cool thing to get something like 40-50% boost (you're not expecting it to double, are you?), but the fact is - SLI had rarely been properly handled by devs. DAI is not unique about that, many games get extra issues for the SLI where single cards are working just fine. Flickering, tearing etc etc.  Sometimes it's easy to fix by some simple settings, sometimes its a painful trial&error process with Nvidia Inspector profiles.

 

You want that boost + a risk to get plenty of manual tweaking instead of just playing the game? Then get yourself SLI. 

[Euteras]

I think you are usually better off with a single better card. When the card ages and if you come across a fairly hot deal then SLI will extend the usability of that card.

[Influ]

I wouldn't recommend SLI at the moment if DA:I is your main consideration. Mainly because of this bug:

Spoiler

 

There's also some texture flickering when running in SLI.

 

In general, if you're willing to accept that there's probably going to be more issues with running in SLI than with a single card and that the functionality may not be available right away for new games, maybe. When it works as intended, it's really nice. But it's definitely not without it's issues.

[Slapstick83]

I wouldn't recommend SLI at the moment if DA:I is your main consideration. Mainly because of this bug:

 

There's also some texture flickering when running in SLI.

 

In general, if you're willing to accept that there's probably going to be more issues with running in SLI than with a single card and that the functionality may not be available right away for new games, maybe. When it works as intended, it's really nice. But it's definitely not without it's issues.

 

Ugh... nasty bug.

 

Yeah I was wondering about this game specifically since I can see myself sinking quite a heavy amount of hours into it. I'm "ok" with some tinkering and initial bugs, and a 40-50% increase would still put me comfortably above the 60fps mark. I was really wondering if anyone was running it mostly bug-free with SLI at the moment. With tinkering or otherwise.

[Influ]

Ugh... nasty bug.

 

Yeah I was wondering about this game specifically since I can see myself sinking quite a heavy amount of hours into it. I'm "ok" with some tinkering and initial bugs, and a 40-50% increase would still put me comfortably above the 60fps mark. I was really wondering if anyone was running it mostly bug-free with SLI at the moment. With tinkering or otherwise.

From my experience, no amount of tinkering can solve the issues currently. I've tried all sorts of voodoo and actively searched the depths of the interwebs for potential workarounds, but to no avail. All you can do is disable SLI entirely or deal with the bugs. I think it's up to Bioware or Nvidia to resolve this one.

[SirJoeofthePub]

I used to do the SLI/Crossfire thing, turned out to be a huge waste of money. Much happier with a single card and cooling is no longer an issue.

[NRieh]

 

Ugh... nasty bug.

It was same for me. Here's a link to my post with the compare shots. One form me (SLI) and another - from a friend of mine(single nvidia GPU) 

One of the important plot-related locations had turned into Silent Hill (of a sudden). 

 

I've had my share of flickering grass\terrains too, but I never cared too much (was annoying, though). 

 

So - think for yourself. To me it looks like the devs themselves (both game-devs and hardware-devs) are not encouraging people to use SLI configs, promoting the mid\high-end cards instead. Probably one day SLI is just going to extinct, same as Voodoo 3DFx cards did.

[Scoobydooby]

Crossfire for me was a huge waste as the driver support sucked balls. 

 

SLI so far has not been far better, but it has been better.. and this game actually doesn't run too bad with SLI. Could be better, but at least the gains are quite good. 

 

On a single 970 I get ~45-50 in most areas @ 1440p but can drop down to 30s. With 2x 970 I get around 75-90, so the difference is not small.. it really is almost double in most cases. 

 

I get some textures flickering, but its not too bad once you set Vsync through inspector. 

 

I imagine with newer drivers (what's taking so long Nvidia?) it will get better. 

 

Overall I'm happy I've gone SLI this time, even if it means more trouble.. the performance when working is amazing for the investment, but it really depends on your needs at the end of the day. 

 

For me, I want 100FPS @ 1440.. so SLI helps big time with that. If you're only looking for 1080p@60fps, then its definitely overkill. 

[Proteus7]

I used to do the SLI/Crossfire thing, turned out to be a huge waste of money. Much happier with a single card and cooling is no longer an issue.

Yup. OP if you go check out Nvidia's sli forums, you're going to see a lot of dissatisfied people. Many newer games don't have sli support and it can take a long time for sli profiles to get released. A number of people are often stuck utilizing maybe 5% of their second card, (not necessarily for this game, just in general).

I've seen mixed results when trying to run sli/crossfire for DA:I. Some claim it helps, some say it doesn't help much at all.

[xrayspex73]

Unless you are running a multi-monitor or a 4k monitor, I would avoid SLI and crossfire at all costs. It is just a headache to deal with. Games RARELY support it until weeks/months later if at all. You are always better off with a single GPU.

 

Unfortunately I am stuck dealing with SLI until a single GPU can handle super high resolutions on modern games.

[DemGeth]

That's a tough choice!

First at least wait for patch notes on nvidias next driver. You never know, don't want you kicking yourself if it gets some crazy better drivers!

Then if you want to upgrade I bet it would be cheaper overall to sell the 780 and get a 980. Sli can be great or it can be a pain.

[Slapstick83]

Unfortunately I am stuck dealing with SLI until a single GPU can handle super high resolutions on modern games.

 

This is exactly it. I find it slightly strange that games almost require SLI to run their higher graphics settings (at least at > 1080p), but don't support it (very well). Maybe I'll do a "Try & Buy". By consumer law in Norway I can return anything within 14 days after purchase, so I could at least give it a shot once they release a patch/driver that makes SLI work better.

[metalfenix]

I'm like a donkey regarding hardware, so for me, one single card is enough.

[darkblueglass]

I'm happy with 780 SLI with 1440p. I think I have the same monitor as the OP (Asus gsync 27" one).

My PSU is 800W one.

There are some texture flickering (snowy grounds) in Heaven but after Heaven I don't notice them much at all (if any).

I didn't know that the fog in the dungeon though. I thought that it is like that originally but we don't have many areas with those underground fogs.

I had zero crashes for 80 hours.

 

Overall SLI related issues are minor for me and I would choose smoother gameplay of SLI with all ultra settings over some minor texture flickering problems in very limited areas.

 

I was always afraid of SLIs but I bit the bullet and  got another 780 just for DA:I instead of upgrading to 980 and I'm actually really happy with my decision so far.

[xrayspex73]

Well since you have a 1440p gsync monitor, you are going to need a 2nd 780ti to get the the 144fps to match the gsync refresh rate if I am not mistaken. Whereas I am running a higher resolution, but only need 60hz (3440x1440). Both scenarios really do need dual cards these days unless you only run older less intensive titles (which is not why we have these high end systems).

 

On a less skeptical note, when SLI works, it works well. Most older games have full support and issues largely have been addressed. It is just frustrating if you are one who buys a lot of games at release. You will be playing the waiting game a lot.

[darkblueglass]

The game doesn't have to run at 144 hz to get the benefit of Gsync monitors. It just allows us not to use Vsync but not suffer from screen tearing.

[xrayspex73]

Overall SLI related issues are minor for me and I would choose smoother gameplay of SLI with all ultra settings over some minor texture flickering problems in very limited areas.

 

 

I played my first playthrough with SLI enabled and yes, the flickering is not as widespread as it is in the tutorial area and Haven, but it is still there. The strange thing that I found that works 90% of the time, if you see flickering foliage and shadows, just save the game and reload the save. The flickering almost always goes away in that area.

 

The white fog SLI issue has no workaround that I am aware of, but only comes up in some dungeons.

 

I am also finding that the hitching cutscenes seem to be related to SLI (for me). If I disable SLI, my framerates suck, but there is virtually no "hitching" when transitioning between gameplay and cutscenes. If I enable SLI, i get hitching sound and video when this transition is made (and it drives me absolutely bonkers). I actually have been playing it on my HTPC that only has 1 680GTX@1080p and the game looks and runs flawlessly versus my 2x780GTX setup.

[xrayspex73]

The game doesn't have to run at 144 hz to get the benefit of Gsync monitors. It just allows us not to use Vsync but not suffer from screen tearing.

 

Gotcha. Wasn't sure. Never looked to hard at the gsync monitors although they look pretty sweet.

[Keithian]

SLI has been a total waste since Nvidia came out with the 580M series on upward around the time that the Witcher 2 came out. Its not just the developers, its Nvidia as well. Support for these products just sucks at release and they are both to blame. I think the fact that they are allowed to sell for that much money SLI configs that are not properly supported should be criminal :-).

 

If I was to get a new PC, I would wait until the next Nvidia card comes out probably in Q1 of next year and doesn't require SLI, like a 980ti :-).

[Zorlagius]

There are also new AMD cards coming out early next year, namely 380X and 390X. We had a supposed leak that showed one of these having rather high performance and much lower power draw than current 290 series. But we shall see when the stuff actually lands on shops.

[Sanunes]

SLI has been a total waste since Nvidia came out with the 580M series on upward around the time that the Witcher 2 came out. Its not just the developers, its Nvidia as well. Support for these products just sucks at release and they are both to blame. I think the fact that they are allowed to sell for that much money SLI configs that are not properly supported should be criminal :-).

 

If I was to get a new PC, I would wait until the next Nvidia card comes out probably in Q1 of next year and doesn't require SLI, like a 980ti :-).

 

I can't see the ti series being released that quickly, normally the ti series is when nVidia has a new technology (generally for a new generation of cards) and releases on the older series.

 

To the OP

 

I tried SLI once, felt it was a waste of money because of the benefits I could see, of course SLI support has been and probably also will always be a secondary objective for both nVidia and developers.

[dabs]

I did crossfire a while ago til the fan on one of my cards died.  Not impressed enough by it to do it again, I'd just buy 1 better card.

[Master of the Deck]

At this point, it's not worth buying another GTX780ti just for this game.  My system is similar to yours (intel 4790 @ 4.00ghz, 2 GTX780ti's in SLI, Samsung ssd, 32mg ram, windows 7 64bit, 32" monitor @ 2560x1440 res), and my average frame rate is 48FPS.  That's smooth enough to run at ultra and high settings, and the FPS is better in interiors where there is usually less to draw.  But I really expected more.  The game is not optimized at this time for SLI configurations.  Hopefully Bioware or Nvidia will address this in the future.

 

Just to be sure, I disabled one of my GTX780ti's and went back to the game and checked my frame rate.  Still at a 48FPS average.

[Proteus7]

I can't see the ti series being released that quickly, normally the ti series is when nVidia has a new technology (generally for a new generation of cards) and releases on the older series.

To the OP

I tried SLI once, felt it was a waste of money because of the benefits I could see, of course SLI support has been and probably also will always be a secondary objective for both nVidia and developers.

I've seen some articles on the 980ti. Supposedly the specs got leaked and it's about 50% more powerful than the 980. Some people seemed to think it could be out in the next 90 days or so, others think it's going to be a much longer wait.