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SLI FPS vs Single card FPS - Page 2

post #11 of 53
I know exactly what your talking about . Although I run 5760 x 1080 res , my Tri Sli 480's settle at about 60 fps with everything on medium and 1x AA .

The game is just terrible for Sli scaling imo .
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post #12 of 53
Thread Starter 
Yea just did some researches online and found out that it really does depends on what you're running.... but thx a lot for infos guys!! all rep+! and thx for the dude who suggested an eye exam, you're making OCN better sarcasm
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post #13 of 53
No idea what you're on about. My SLI setup is vastly superior to a single card setup in every way....
post #14 of 53
Thread Starter 
Quote:
Originally Posted by Majin SSJ Eric View Post
No idea what you're on about. My SLI setup is vastly superior to a single card setup in every way....
Well I'm glad it's not happening to you.. but to me whenever theres heavy scenes that drops my fps to 80-ish.. and it only lasts about a few seconds... these 80-ish fps that i'm experiencing actually feels different than running around with ~80fps on a single card..
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post #15 of 53
Quote:
Originally Posted by Majin SSJ Eric View Post
No idea what you're on about. My SLI setup is vastly superior to a single card setup in every way....
look at sig....



JESUS
post #16 of 53
Quote:
Originally Posted by xxlap1xx View Post
Well I'm glad it's not happening to you.. but to me whenever theres heavy scenes that drops my fps to 80-ish.. and it only lasts about a few seconds... these 80-ish fps that i'm experiencing actually feels different than running around with ~80fps on a single card..
Yet when you're running a single card and it has to render that same heavy scene with the same maxed out settings, the 80fps you're complaining about is going to be a hell of a lot better than 20-30fps with a single card.

You've basically got the one of the best graphics setup currently out, yet you're still complaining about performance at over 60fps? Try lowering the settings if it really bothers you.

If anything your mind might just be playing tricks on you.
    
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post #17 of 53
No, you're not the only one. And yes, it's called microstutter. I've probably mentioned on these boards like 10 times that 45fps in SLI can often 'feel' about as smooth as 30fps on a single card. And it will vary from game to game, driver to driver, even day to day, because it's a dynamic situation.

Microstutter is caused by the game falling into a pattern of rendering frames at a rate that is not 'evenly spaced' over time. Drivers attempt to keep this from happening, but the thing is ... the best 'scaling' is achieved with the 'worst' microstutter. So since raw FPS 'sells cards', the driver makers don't always try their hardest to come up with algorithms that will keep the game as smooth as possible because it costs raw fps (because 'smoothness' with multi-GPU requires one card 'waiting' on the other from time to time ... which is *not* optimal for max FPS).

There's more to the perception of smoothness than just FPS, bottom-line. The distribution of frames over time plays a BIG role. And microstutter is a 'bad' frame distribution, that happens to result in 'good' scaling. So we're stuck with it unless and until reviewers come up with a better way of representing the gameplay experience aside from raw FPS, and that becomes the 'new standard' that people buy gear based upon.

I wish that nV would come up with a control panel option for maximizing smoothness. It could be done, but like I say it'll 'cost' in the all important 'scaling' department. And once they put out an option like that, it'll bring to light the whole lie that > FPS is always equal to more 'smoothness' (it's a lie when it comes to multi-GPU at least) and frankly I don't think they'll do it because the reviewers will start using it on their cards when doing reviews, and they'll think it'll cost them market share. People may not BUY that 2nd card when they discover that 'max smoothness' results in like 50% scaling instead of the 'desired' 100% scaling.

And I'm not telling you this cause I'm a SLI hater. I actually like SLI, I run SLI, and I have for the past 2.5 years. But this possibility of occasionally running into games where MS is a problem ... is something that you deal with. It doesn't happen in every game, or even all the time in the same game. Honestly most of the time, the gain in FPS is 'worth it' in my book.
Edited by brettjv - 8/4/11 at 1:53am
    
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post #18 of 53
Read THIS ^ post.

Anyways.

If it feels like 50, then it's probably some stuttering. Try doing a CLEAN (real one) driver install, go for the 280s or the 275.50s.

If that doesn't work, check your DPC Latency. (get the tool from here)
If that doesn't work, keep posting. And try listing any performance monitoring programs you might have, like for example the asus oc tool thing.

That's what i do, luckily i've only noticed MS problems when i had DPC latency problems. Other than that SLI feels as smooth as single card.

PD: I hate how most of you people are just going: YOU HAVE 80 FPS SO WHAT YO PROBLEM?! GET SUM GLASSES YO. Stuttering (whether it is micro or not) is a real (and quite annoying problem)
Edited by ilam3d - 8/4/11 at 3:11am
post #19 of 53
Quote:
Originally Posted by xxlap1xx View Post
um... no? because i do know what 80fps feels like.. tried it with single card.. but when i run sli and theres heavy scenes drops my fps down to ~80fps.. i do feel more micro stuttering.. so your comment didnt help
I thought the human eye could only see at about 74fps?

On topic: Unfortunately I only have 1 PCI slot on my motherbaord so SLI or Crossfire is out of the question for me. I'd much rather have one powerful card then two weaker cards. Probably uses less power too.
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post #20 of 53
Quote:
Originally Posted by General Crumples View Post
I thought the human eye could only see at about 74fps?
Not true. Besides, he's saying at 80fps SLI makes the stuttering noticeable, even though the monitor isn't actually displaying 80fps.
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