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is there any benefit to having two high end cards in sli if your monitor is only 60hz ? - Page 3

post #21 of 33
Yeah, adaptive vsync is kinda useless, since when it's on it's input lag and when it's off it's back to screen tearing, however the adaptive "half refresh rate" is pretty cool if a game is wild with the framerate that causes stutter, this option really smooths it out by locking the framerate
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post #22 of 33
I used to run SLI GTX 570s, I can definitely tell you that you should try to get the most powerful single GPU that can sustain the monitor FPS in your resolution/game of choice. I know most people can testify that there are virtually no difference between SLI and single GPU smoothness but I'll give you my experience for what its worth.

I got the GTX 570 a short time before the AMD 7970 was released because I was poor, good card but not very future proof and didn't have quite enough oompf I needed (my primary gaming was BF3 on 1080p), I regretted not getting the 3gb GTX 580 at the time. The 7970 was astronomical in pricing so a single GPU upgrade was out of the question. I got a second 570.

Basically, with dual GTX 570, I had a massive performance buffer in most games (especially BF3) because I capped the FPS to 59 and would never get slowdowns below this. This was great for BF3 and the games of that time because of this buffer. However as time progresses, the SLI rig was less and less capable of exceeding that 59FPS cap so what I noticed was what you can describe as microstutter, while its not actually stutter, its more of a lack of fluidity in the presentation of the frames.

The irony is that the harder hitting games/settings are the ones that require SLI performance but conversely the smoothness is the first to be compromised. Basically, SLI is great for ensuring performance never drops below 59 FPS by giving you a buffer but if you need SLI to achieve 59 FPS then smoothness suffers.

So whats my point? unless you really want to ensure you never get FPS drops at a given resolution/game/setting don't SLI, use that money and put it towards a future single GPU. Towards the end, when my SLI rig was only producing 60FPS in most games at the ultra settings, I found myself disabling the second card and simply lowering the game settings for the sake of smoothness.

In hindsight, if I had pocketed the $370 I spent on the second 570, I could've paid more than 60% of the 290 I am using now which is fully 30% faster than BOTH 570s.
post #23 of 33
He already has 2x GTX 780 superclocked. with 3GB vram each that is more than sufficient to his setup.
@Dasboogieman : I know what you've been through cuz i once had 2x GTX 480s for BF3 at 1080p and they were "fine" but the vram cap is really annoying... specially for these new games that have been released lately in 2013 and 2014.

3GB vram is enough for his 1440p setup.
post #24 of 33
Quote:
Originally Posted by Dasboogieman View Post

I used to run SLI GTX 570s, I can definitely tell you that you should try to get the most powerful single GPU that can sustain the monitor FPS in your resolution/game of choice. I know most people can testify that there are virtually no difference between SLI and single GPU smoothness but I'll give you my experience for what its worth.

I got the GTX 570 a short time before the AMD 7970 was released because I was poor, good card but not very future proof and didn't have quite enough oompf I needed (my primary gaming was BF3 on 1080p), I regretted not getting the 3gb GTX 580 at the time. The 7970 was astronomical in pricing so a single GPU upgrade was out of the question. I got a second 570.

Basically, with dual GTX 570, I had a massive performance buffer in most games (especially BF3) because I capped the FPS to 59 and would never get slowdowns below this. This was great for BF3 and the games of that time because of this buffer. However as time progresses, the SLI rig was less and less capable of exceeding that 59FPS cap so what I noticed was what you can describe as microstutter, while its not actually stutter, its more of a lack of fluidity in the presentation of the frames.

The irony is that the harder hitting games/settings are the ones that require SLI performance but conversely the smoothness is the first to be compromised. Basically, SLI is great for ensuring performance never drops below 59 FPS by giving you a buffer but if you need SLI to achieve 59 FPS then smoothness suffers.

So whats my point? unless you really want to ensure you never get FPS drops at a given resolution/game/setting don't SLI, use that money and put it towards a future single GPU. Towards the end, when my SLI rig was only producing 60FPS in most games at the ultra settings, I found myself disabling the second card and simply lowering the game settings for the sake of smoothness.

In hindsight, if I had pocketed the $370 I spent on the second 570, I could've paid more than 60% of the 290 I am using now which is fully 30% faster than BOTH 570s.

I had the same experience with my 470's witht he stuttering and other general usage issues.

I will say though, after experiencing SLI with the 6 and 7 series cards, Major improvements have been made, I still will refuse to go back to multi-gpu until either AFR is tamed to perfection accross all titles, or a new method is put in place.

OP should not experience any issues with most titles on his setup.
post #25 of 33
Quote:
Originally Posted by Xboxmember1978 View Post

Yeah, adaptive vsync is kinda useless, since when it's on it's input lag and when it's off it's back to screen tearing, however the adaptive "half refresh rate" is pretty cool if a game is wild with the framerate that causes stutter, this option really smooths it out by locking the framerate

First thing I tried was half refresh mode when I got a GTX 650ti for my media center. I have not tried it on other cards, but with that system I figured it would give me a good drop in power/heat, but instead it seemed to give me HUGE input lag(tested it on Just Cause 2). Using Nvidia Inspector is how I frame cap when needed now(no increase in input lag that way.).
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post #26 of 33
But using Nvidia Inspector to cap your frames you loose Vsync, any framerate limiter will cancel vsync
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post #27 of 33
Quote:
Originally Posted by Xboxmember1978 View Post

But using Nvidia Inspector to cap your frames you loose Vsync, any framerate limiter will cancel vsync

Personally.. again.. if its an FPS game... vsync is not what you want (not all cases)
post #28 of 33
Quote:
Originally Posted by Xboxmember1978 View Post

Nothing is ever wasted, for example my sli setup when I use Vsync at 60fps, in some games the GPU usage is 50%~60% so that's less heat and less wattage, so it's never actually wasted but just not being fully used in some games, but when you need to extra horsepower for other games it's there

Plus I'm at 1440p too and sli definitely helps to keep the frames up there

LOL at less HEAT and less WATTAGE. Yeah EACH card produces less heat and less wattage, but in total? NO, it is MORE, specially wattage.
Edited by ghostrider85 - 4/7/14 at 8:12pm
post #29 of 33
Quote:
Originally Posted by Xboxmember1978 View Post

But using Nvidia Inspector to cap your frames you loose Vsync, any framerate limiter will cancel vsync
Nvidia inspector 30fps cap + vsync + triple buffer off should actually do the job. It IMO is a better option than the half refresh option because it did not introduce the same kind of input delay. And only for games that are not fast enough to need more frames per second(MMO games since they can have frame rates all over the place).

With triple buffering on almost any frame rate under 60 can be used with vsync(no page tear and no instant 30 fps drop when you fall under 60), but the input lag gets higher.
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post #30 of 33
Thread Starter 
Quote:
Originally Posted by Xinoxide View Post

It will look the same, it will just not render as fast.

Its really an experience thing. You wont understand the benefits of the higher refresh rate unless you try it.
if I disable v-sync in call of duty ghosts multi player and get the max fps you can get is 90 fps in that game and get very little to no screen tearing is that like playing with a monitor with a high refresh rate ?
    
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