GTX 1080 SLI

[TonyTheNain]

Hey guys!

 

I was considering buying another GTX 1080 to do sli but i have a few questions:

 

1. Does GTA V support sli?

2. Does Rainbow Six Siege support sli?

(if both games support it, will i notice a big performance difference or a small one?)

3. If a game doesn't support sli, will the sli ability will deactivate automatically or i need to do it manually?

4. In the same way as number 3, if a game support sli, will the sli ability will activate automatically or i need to activate it manually?

 

Thank you!

[NTDaws]

Yes GTA V supports SLI

RSS is supported with SLI

There will be double the performance with 2 graphics cards in SLI.

Some games do support SLI but there may be a performance fall in the game with SLI enabled.

It will not enable automatically.

[TonyTheNain]

1 minute ago, Dawson Wehage said:

Yes GTA V supports SLI

RSS is supported with SLI

There will be double the performance with 2 graphics cards in SLI.

Some games do support SLI but there may be a performance fall in the game with SLI enabled.

It will not enable automatically.

So how do I activate/deactivate the sli?

[NTDaws]

Just now, Fourmi_Killer said:

So how do I activate/deactivate the sli?

Look in the nvidia control panel for SLI and you can disable it.

[TonyTheNain]

Just now, Dawson Wehage said:

Look in the nvidia control panel for SLI and you can disable it.

Oh ok so it's that easy. Thx!

[NTDaws]

1 minute ago, Fourmi_Killer said:

Oh ok so it's that easy. Thx!

no problem have fun

[PigWithAMustache]

 

[Pheelo]

1 hour ago, Dawson Wehage said:

There will be double the performance with 2 graphics cards in SLI.

No.

[NTDaws]

2 minutes ago, Pheelo said:

No.

well to a degree yes.

[Sazexa]

Regarding "double the performance." In most AAA titles, you can expect to see basically perfect, to near perfect scaling. Meaning if one GPU was giving you 60 FPS, in most AAA titles you could expect anywhere from 105-120 reasonably. With lesser developed and optimized games, sometimes you won't even benefit much from dual GPU's.

This is part of why NVidia no longer officially supports 3-way and especially 4-way GPU configurations. In fact, in many cases, four-way SLI performance was worse than three way. There's always the possibility of micro-stutter or increased frame time.

THAT BEING SAID; I currently run two GTX 1080's myself and absolutely love them. They work marvelously together. I don't experience microstutter, or bad frame-times. Almost every game I play sees at least a pretty good jump in frame rate. It fills my board up better, and looks a lot nicer than just one card (especially on an E-ATX board.)

Obviously there's more heat and power draw, and noise if you're air cooled. Depending on watercooling noise might not change. But I don't regret buying two.

[sgloux3470]

1 hour ago, Dawson Wehage said:

Yes GTA V supports SLI

RSS is supported with SLI

There will be double the performance with 2 graphics cards in SLI.

Some games do support SLI but there may be a performance fall in the game with SLI enabled.

It will not enable automatically.

 

Nvidia will only have SLI enabled for games if SLI results in a performance improvement.  Any time there is negative scaling they disable it in the drive and unless you manually enable it with Nvidia Inspector or forcing AFR in the control panel it will run in single GPU config.

 

Likewise, games with working SLI profiles will run with SLI by default.  Those that don't will default to single GPU.  Once you install your graphics drivers with multiple GPU's installed SLI will be enabled. 

 

1 minute ago, Sazexa said:

Regarding "double the performance." In most AAA titles, you can expect to see basically perfect, to near perfect scaling. Meaning if one GPU was giving you 60 FPS, in most AAA titles you could expect anywhere from 105-120 reasonably. With lesser developed and optimized games, sometimes you won't even benefit much from dual GPU's.

This is part of why NVidia no longer officially supports 3-way and especially 4-way GPU configurations. In fact, in many cases, four-way SLI performance was worse than three way. There's always the possibility of micro-stutter or increased frame time.

THAT BEING SAID; I currently run two GTX 1080's myself and absolutely love them. They work marvelously together. I don't experience microstutter, or bad frame-times. Almost every game I play sees at least a pretty good jump in frame rate. It fills my board up better, and looks a lot nicer than just one card (especially on an E-ATX board.)

Obviously there's more heat and power draw, and noise if you're air cooled. Depending on watercooling noise might not change. But I don't regret buying two.

The trick to fixing frametimes/microstutter is to use Rivatuner Statistics to cap the framerate at your refresh rate.  This completely smooths out frametimes on par with single GPU.  By default there's not much, but it's almost completely eliminated with this trick.

 

[Sazexa]

1 minute ago, sgloux3470 said:

 

The trick to fixing frametimes/microstutter is to use Rivatuner Statistics to cap the framerate at your refresh rate.  This completely smooths out frametimes on par with single GPU.  By default there's not much, but it's almost completely eliminated with this trick.

 

As I said, I haven't had any issue with it at all, so haven't even bothered. Many times, it can be fixed easily by just enabling V-Sync as well.