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Brand new to SLI, having minor issues.

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  • SLI
  • Graphics
Last response: in Graphics & Displays
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July 3, 2013 9:53:32 PM

I just put in another EVGA GTX 660ti, and for some reason every once in a while I get this weird flicker on my main monitor. It doesn't happen with any of my other monitors.

The monitor I'm using is an Asus with the ability to display at 144hz refresh rate. I was noticing excessive screen flickering at 144, so I dropped it down.

Now I'm at 120hz refresh and the screen flickering has about 99% stopped, however every once in a while the screen flicker will occur. This flickering ONLY happens on my main monitor, the other monitors are at 60hz, and are standard res monitors.

My question is....

What's going on!?

I'm not new to building computers, however I am brand new to SLI. I normally favor a single card solution over an SLI or Crossfire solution for builds because of weird problems like these.

I updated to the newest drivers, used a different SLI bridge, and still I get this flicker at 144hz, and not so often at 120hz.

I am very skeptical that anyone else has experienced this problem, and I'm skeptical that anyone else can help me. If you do come up with an answer though, I'll mail you some chocolate cookies. :)  Thanks

Overall, I'm happy with SLI. I benchmarked a game at max settings and I got 420 FPS constant. I'm happy.

More about : brand sli minor issues

July 3, 2013 10:01:31 PM

You are using multiple screens at different frequencies .... kind a like driving a car with different wheel sizes on left and right side of the car .... cards are having trouble synchronizing
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July 3, 2013 10:03:06 PM

When you say the other monitors are "standard res" what do you mean?
How many monitors are connected, which monitors are connected to which ports on which card and with what connection?
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July 3, 2013 10:06:07 PM

dingo07 said:
When you say the other monitors are "standard res" what do you mean?
How many monitors are connected, which monitors are connected to which ports on which card and with what connection?


Acer monitor on the right at 60hz 1600x900 Standard Dvi-D
Samsung monitor on the left at 60hz 1600x900 HDMI
Asus monitor in the middle at 120hz/144hz 1920x1080 Dual Link DVI

Should I take my 16:9 monitors and plug them into the second card, and keep the asus on it's own card?
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July 4, 2013 12:18:09 AM

You shouldn't be using three different model monitors with SLI.
- Try running with the lowest same refresh rate for all interfaces.
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July 4, 2013 8:16:14 AM

Tabris DarkPeace said:
You shouldn't be using three different model monitors with SLI.
- Try running with the lowest same refresh rate for all interfaces.


Do you think putting the two other monitors on their own card would fix the issue?

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July 4, 2013 8:43:13 AM

It may help if you are aiming for a 120/60/60 Hz refresh rate balance between them.
Depends how the hardware balances the workload, and somewhat on the drivers.

Can't know until you try, not likely to damage anything,
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July 4, 2013 8:52:35 AM

Mat Rodriguez said:
Tabris DarkPeace said:
You shouldn't be using three different model monitors with SLI.
- Try running with the lowest same refresh rate for all interfaces.


Do you think putting the two other monitors on their own card would fix the issue?



No, they all need to have the same refresh rate and resolution and may even need to all be plugged into the primary card. Check on Nvidia's site for the full and correct details.
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July 4, 2013 4:22:08 PM

Mousemonkey said:
Mat Rodriguez said:
Tabris DarkPeace said:
You shouldn't be using three different model monitors with SLI.
- Try running with the lowest same refresh rate for all interfaces.


Do you think putting the two other monitors on their own card would fix the issue?



No, they all need to have the same refresh rate and resolution and may even need to all be plugged into the primary card. Check on Nvidia's site for the full and correct details.



What's really weird is when I have these three monitors connected without sli enabled, the flashing doesn't appear at all. I wonder what is causing SLI to act up, and not the single display.
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