2x1080ti in VR

[Boundless_I]

Hi everyone,

 

I was wondering if there is a person who is actually using 2x1080ti in vr. Does it really give any boost to FPS in a game?

 

Cheers

[spitfirejoe]

that is a great question, I would also love to know that. 

[dburne]

No currently SLI in VR does not have support.

[[PFR]Sarpalaxan]

Don't think it would do much. This game is mostly capped by how good your cpu is.

 

[Boundless_I]

1 hour ago, [GG]Sarpalaxan said:

Don't think it would do much. This game is mostly capped by how good your cpu is.

 

I’m not sure, got 8700k and 32 gb ram working on 3600, and didn’t see much of a difference since I overclocked my cpu from base clock to 4900. Playing on high sets with average 75 FPS and decided to figure out if anyone playing on 90 FPS all the time?

2 hours ago, dburne said:

No currently SLI in VR does not have support.

Are you sure or these are just thoughts?

[dburne]

12 minutes ago, Simple_Blessing said:

I’m not sure, got 8700k and 32 gb ram working on 3600, and didn’t see much of a difference since I overclocked my cpu from base clock to 4900. Playing on high sets with average 75 FPS and decided to figure out if anyone playing on 90 FPS all the time?

Are you sure or these are just thoughts?

 

Pretty sure but feel free to have a go with it.

 

Perhaps a web search might help clarify for you.

[Boundless_I]

57 minutes ago, dburne said:

 

Pretty sure but feel free to have a go with it.

 

Perhaps a web search might help clarify for you.

Interesting, cause game itself got a sli support. Thanks.

[ironk79]

1 hour ago, Simple_Blessing said:

I’m not sure, got 8700k and 32 gb ram working on 3600, and didn’t see much of a difference since I overclocked my cpu from base clock to 4900. Playing on high sets with average 75 FPS and decided to figure out if anyone playing on 90 FPS all the time?

Are you sure or these are just thoughts?

Depends, QMB, MP, Career Mode? I have no problems running constant 90fps in QMB, but MP and career - no chance, hard dipseven into 40s are frequent.

[dburne]

My new rig is giving me 85-90 fps with my Rift and pretty high graphics settings. This in PWCG Campaign. Will have to start a new Career and see how that does.  I saw a much larger improvement with the MB CPU and Ram upgrade than I did going from 1080 Ti to 2080 Ti on my previous system ( 4820k at 4.5 GHz).

 

 

 

[Dutch2]

Why not support me at https://forum.il2sturmovik.com/topic/42311-make-sli-for-vr-active/

Who knows Jason is going to the VR-SLI action. 

[Boundless_I]

7 hours ago, ironk79 said:

Depends, QMB, MP, Career Mode? I have no problems running constant 90fps in QMB, but MP and career - no chance, hard dipseven into 40s are frequent.

I’ve never actually tried to fly in a career mode, usually just go into mp dogfighting straight away. But maybe I should try to understand the difference. Thanks 

[Boundless_I]

10 hours ago, dburne said:

My new rig is giving me 85-90 fps with my Rift and pretty high graphics settings. This in PWCG Campaign. Will have to start a new Career and see how that does.  I saw a much larger improvement with the MB CPU and Ram upgrade than I did going from 1080 Ti to 2080 Ti on my previous system ( 4820k at 4.5 GHz).

 

 

 

This is also interesting, so it’s not worth it to change a card right now as well. Are they trying to optimise the game better for vr experience?

[dburne]

Just now, Simple_Blessing said:

This is also interesting, so it’s not worth it to change a card right now as well. Are they trying to optimise the game better for vr experience?

 

In my case I would say my X-79 board /4820k CPU and DDR3 ram just could not feed the beast (2080 Ti) quite as good as it needed.

[-332FG-Gordon200]

11 hours ago, Simple_Blessing said:

Interesting, cause game itself got a sli support. Thanks.

Neither IL*2 nor DCS support SLI in VR.

IL*2 has multiple gpu functionality for 2D images but it does not support or enhance the VR experience. 

[Boundless_I]

1 minute ago, Gordon200 said:

Neither IL*2 nor DCS support SLI in VR.

IL*2 has multiple gpu functionality for 2D images but it does not support or enhance the VR experience. 

Thanks, one day, hopefully 

11 minutes ago, dburne said:

 

In my case I would say my X-79 board /4820k CPU and DDR3 ram just could not feed the beast (2080 Ti) quite as good as it needed.

That’s for sure, well, good on you. Hope you enjoy it now

[Dutch2]

Jason reply:   It seems SLI in VRmode does work https://forum.il2sturmovik.com/topic/42311-make-sli-for-vr-active/?tab=comments#comment-726464

 

Who can find the prove by using SLI in VR. 

Edited January 31, 2019 by Dutch2

[Boundless_I]

19 minutes ago, Dutch2 said:

Jason reply:   It seems SLI in VRmode does work https://forum.il2sturmovik.com/topic/42311-make-sli-for-vr-active/?tab=comments#comment-726464

 

Who can find the prove by using SLI in VR. 

So now we need a person who actually is using it

 

back to the top

[-332FG-Gordon200]

After reading a number of articles and forums regarding SLI and VR and coming away with conflicting answers I tried an experiment. I did not record frame rates or gpu/cpu utilization. I wanted to determine what looked better and performed smoothly not how much horsepower was available.

I went from two MSI GTX 1070 Armor (8Gb) GPUs with the SLI bridge, then without the bridge (cross connect) and finally with only one 1070 and saw no difference in VR.

Now that I have a 2080ti I've been able to max out settings that would have crashed my two 1070s in SLI before.

In my humble and unprofessional opinion that second 1070 was simply along for the ride.

 

PS - Anyone want a free Nvidia SLI bridge?

[Boundless_I]

2 hours ago, Gordon200 said:

After reading a number of articles and forums regarding SLI and VR and coming away with conflicting answers I tried an experiment. I did not record frame rates or gpu/cpu utilization. I wanted to determine what looked better and performed smoothly not how much horsepower was available.

I went from two MSI GTX 1070 Armor (8Gb) GPUs with the SLI bridge, then without the bridge (cross connect) and finally with only one 1070 and saw no difference in VR.

Now that I have a 2080ti I've been able to max out settings that would have crashed my two 1070s in SLI before.

In my humble and unprofessional opinion that second 1070 was simply along for the ride.

 

PS - Anyone want a free Nvidia SLI bridge?

Beautiful post, thanks for that, but could you tell me what cpu you were using? 

[C6_lefuneste]

21 hours ago, [GG]Sarpalaxan said:

Don't think it would do much. This game is mostly capped by how good your cpu is.

 

I though so, but upgrading by 1070 by a 1080TI give me at leat a 30% fps boost in VR.

[-332FG-Gordon200]

28 minutes ago, Simple_Blessing said:

Beautiful post, thanks for that, but could you tell me what cpu you were using? 

I have a i7 8086K at 5.0 and 32Gb 3600 RAM on an ASRock Z370 Killer mobo.

[Boundless_I]

30 minutes ago, Gordon200 said:

I have a i7 8086K at 5.0 and 32Gb 3600 RAM on an ASRock Z370 Killer mobo.

I see, good rig you got there

[-332FG-Gordon200]

1 hour ago, Simple_Blessing said:

I see, good rig you got there

Thanks. I believe in getting good tools to do a job when possible.

I really thought that with the two 1070s it would blow anything else out of the water. 

[Dutch2]

12 hours ago, Gordon200 said:

After reading a number of articles and forums regarding SLI and VR and coming away with conflicting answers I tried an experiment. I did not record frame rates or gpu/cpu utilization. I wanted to determine what looked better and performed smoothly not how much horsepower was available.

I went from two MSI GTX 1070 Armor (8Gb) GPUs with the SLI bridge, then without the bridge (cross connect) and finally with only one 1070 and saw no difference in VR.

Now that I have a 2080ti I've been able to max out settings that would have crashed my two 1070s in SLI before.

In my humble and unprofessional opinion that second 1070 was simply along for the ride.

 

PS - Anyone want a free Nvidia SLI bridge?

 

That not a real prove if not record the FPS or better the frametimes. You should see this direct in the VR sreen, using the ingame FPS, unlike SLI for monitor, SLI for VR works that Two GPU working parallel, as can be read here, https://developer.nvidia.com/vrworks/graphics/vrsli

 

 

 

 

 

Edited January 31, 2019 by Dutch2

[Panzerlang]

On 1/31/2019 at 5:15 PM, Dutch2 said:

 

That not a real prove if not record the FPS or better the frametimes. You should see this direct in the VR sreen, using the ingame FPS, unlike SLI for monitor, SLI for VR works that Two GPU working parallel, as can be read here, https://developer.nvidia.com/vrworks/graphics/vrsli

 

 

 

 

 

Does that article take account of one PCI slot being x16, the other only x8 I wonder.

[Dutch2]

It seems not read this https://www.gamersnexus.net/guides/2488-pci-e-3-x8-vs-x16-performance-impact-on-gpus

 

Still we need a SLI member who can do a decent test. Come on, there most be a SLI guy that does own a VR gear. Push the graphic settings to highest and you should direct see the results at the ingame FPS counter. No rocket science or complex measurements are needed. 

 

[Field-Ops]

Just did a fresh PC build with two 1080ti SLI and just looking at GPU utilization on my second card it does not move, whereas my 2k monitor ramps up the second card in this game. I think SLI in VR needs its own implementation for it to work and is a separate issue than traditional SLI. I'm reading that the API's are still in development and might change so its probably why their team hasnt gone down that rabbit hole. Picture below is seconds after closing the game. The bottom card runs hot with a crappy cooler (MSI DUKE) so if it was running it would be into the 50's, as it does when I run IL-2 in 2D mode. 

[Boundless_I]

45 minutes ago, Field-Ops said:

Just did a fresh PC build with two 1080ti SLI and just looking at GPU utilization on my second card it does not move, whereas my 2k monitor ramps up the second card in this game. I think SLI in VR needs its own implementation for it to work and is a separate issue than traditional SLI. I'm reading that the API's are still in development and might change so its probably why their team hasnt gone down that rabbit hole. Picture below is seconds after closing the game. The bottom card runs hot with a crappy cooler (MSI DUKE) so if it was running it would be into the 50's, as it does when I run IL-2 in 2D mode. 

Well, what can I say, hopefully we would be able to use sli in vr mode to get a better picture without FPS drop. I wish developers would give us a better optimisation for vr mode maybe if they add sli support that will make a big difference.