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SLI with multiple displays

91Chris
By 91Chris
in Graphics Cards
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Hi. I have 2 GPU's in SLI and 2 displays. My main display is where I play my games and I usually have a Twitch stream or something running on my second display. I've always had both monitors plugged into the same GPU, but the other day I heard someone say that the second display should be plugged into the second GPU. This apparently takes the extra load off the first GPU resulting in higher frames in games.

 

Can anyone confirm this? All the info I found was 5 years old now. The way the guy explained it made sense, but I don't know.

 

Cheers,

Chris

You guys are crazy. You know you guys are self-destructive. There's a funny farm somewhere and it's got your names written all over it. But I'm gettin' outta here.

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If you're SLIing then it won't make a difference but if you were running the 2 GPUs as 2 separate GPUs then unless you're watching a video on the second display, the FPS difference won't be  more than 5 :D (MLG columbus killed my FPS in CS by 100...maybe it's because it's taxing my CPU as CS is a CPU heavy game :P)

Looking at my signature are we now? Well too bad there's nothing here...

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

What? As I said, there seriously is nothing here :) 

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Ok, but what if the game I'm playing does not support SLI?

 

Thanks for the replies

You guys are crazy. You know you guys are self-destructive. There's a funny farm somewhere and it's got your names written all over it. But I'm gettin' outta here.

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Well I imagine it does something as the main card runs hotter. You can just swap it and check the results. I normally use 3 monitors for gaming and the forth for watching the system. 

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it does not impact the gaming performance, only thing it does is prevent the secondary GPU from getting into power saving mode while idle

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OK, kind of counter intuitive but whatever.

I understand the computing is done by both GPU's, but surely splitting the displays across multiple cards would reduce some kind of load as the primary card isn't drawing to two displays?

 

I did try connecting my displays to separate cards to test in games and I cant get it to work. The second display shows up in Control panel but is like grey'd out. Doesn't matter which DVI port I use...

 

Capture.PNG

 

I'm not expecting a huge difference... if any. I just want to see what the deal is.

 

Chris

You guys are crazy. You know you guys are self-destructive. There's a funny farm somewhere and it's got your names written all over it. But I'm gettin' outta here.

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Oh yea I forgot with sli they all have to be plugged into the main card. So there you go. I'm always using surround so I forget. 

Main RIg Lian Li O11 MINI, I7 9900k, ASUS ROG Maximus XI Hero, G.Skill Ripjaws 3600 32GB, 3090FE, EVGA 1000G5, Acer Nitro XZ3 2560 x 1440@240hz 

 

Spare RIg Lian Li O11 AIR MINI, I7 4790K, Asus Maximus VI Extreme, G.Skill Ares 2400 32Gb, EVGA 1080ti, 1080sc 1070sc & 1060 SSC, EVGA 850GA, Acer KG251Q 1920x1080@240hz 

 

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