Sign in to follow this  
Michael Moe

SLI -Profile for 353.06 (2x970SC) ?

Recommended Posts

Just installed my two 970´s and cant find a thread regarding SLI configuration for P3D2.5.

 

I did try Rob´s page but could not find information for P3D2.5

 

Also i cant find a Sli Profile in NI that mention P3D.?

 

Maybe Rob also has one for Project Cars now that i do believe he is a racedriver :-) ?

3 Questions

 

1. Should i connect all my monitors to one card? or spread them between the cards ?

 

i have 

 

1 x 1920x1200 Hanss G 28"

1 x 1280x1024 (just for PFD,ND)

1 x 1024x768 CDUII via an displayadapter(active)

 

 

 

2. Does SLI also work in Windowed Mode ?

 

3. Any benefit of using Dynamic Resolution (upscaling) here ? (guess i have to disable the CDUII and the 1280x1024 first)

 

Thanks for your help

 

 

 

Oh last my activation for P3D has reset because i upgraded so it gives me an error 13 code . I have sent them an email. 

Michael Moe

Share this post


Link to post
Help AVSIM continue to serve you!
Please donate today!

Hi Michael,

 

  I have almost the same hardware like you .

  • SLI 2 x 980 GTX
  • Monitor for Prepar3D 42" (1920 * 1080)
  • Monitor for Aivla, vpilot etc 27" (1920 * 1080)
  • Monitor for FMC 10" - CDU II

1. I use profile for NI - http://www.robainscough.com/P3D_SLI_Settings.html

 

f2f4b8a402786251ad574bc91ce627f5.jpg

 

 

 

2. All my monitors are connected to one card. I think that is the only possible configuration - I mean SLI active with 3 monitors

 

3. With all 3 monitors , i dont have DSR option active in Nvidia Control Panel

 

 

Best reagards,

Nicu

Share this post


Link to post

Thanks. What version of the driver are you using? 353.06 does not show P3D SLI information/combatibel

 

Thanks Michael

Share this post


Link to post

353.06 and show P3D SLi Info. Just click on line

 

274050Untitled.jpg

Share this post


Link to post

No P3D mentioned here. Strange

 

Michael Moe

Share this post


Link to post

Between Lichdom: Battlemage and Far Cry 4. That setting is what nVidia uses to trigger app-specific behaviors  in its drivers under SLI.

Share this post


Link to post

Looks like you forgot to uninstall the previous driver before installing the new. Some drivers cannot be installed over the top of the old.

Share this post


Link to post

No i uninstalled via ddu in safemode before i changed the cards so Strange.

 

Michael Moe

Share this post


Link to post

Did you select the P3D profile and then RESET to default after installing the driver?

 

Vic

Share this post


Link to post

If you don't do the "clean install" checkbox when installing a new driver it preserves all profiles and does not update them at all. Rerun the installer and pick clean.

Share this post


Link to post

Ok will try that

 

I always uninstall via DDU in safe mode first

 

Thanks

 

Michael Moe

Share this post


Link to post

Okay after a re-install of the driver (clean install) i now have a P3D profile in SLI

 

But it seems i have lost 12% in terms of FPS going from GTX780SC to SLI GTX970SC . (Gate A20 EKCH 45fps before now 38)

 

That sucks :-)

 

Anything i should try ?

 

The GPU usage is in Precision X with my older settings is GPU 1 30-34% GPU 2 32-36%

 

Thanks

 

Michael 

 

 

Update:

 

Disabling SLI i am at 44FPS (almost as goodt as my GTX780SC) and GPU usage at 46-51% so any ideers what i am doing wrong here ?

 

Project Cars shows an increase of 10% with 1-vs 1 and 25-45% increase in SLI vs 1 GTX780SC

 

CPU I7-4770K@4,6GHZ at 39.50% usage

Share this post


Link to post

Michael,

   Try to fly without  Precision X :acute:

Share this post


Link to post

Michael,

   Try to fly without  Precision X :acute:

 

 

Thanks i will give it a go,

 

But when i undock my PFD and put it on my second monitor the fps is now cut in half. I have Vsync on and i did not have this problem with my old GTX780SC and the card before that either. Normally it would cost me 2 fps undocking.

 

What am i missing here ?

 

Thanks

Michael Moe

 

 

Update: Hmm just undocking (not moving)and my FPS is really bad (4-5 fps). Thought it was the 59-60HZ thing so i desided to change every monitor to 60HZ but still the problem.

 

Also tried with no vsync but no luck .

 

Will try with only one card again.

 

Could be related to SLI out of SYNC ? ALT-Enter fort and back does not work either

 

I run windowed mode as i want to undock my CDUII etc.

Share this post


Link to post

Update: Hmm just undocking (not moving)and my FPS is really bad (4-5 fps)...

 

Me too if i use Precision X ..i don't know why

Without Precision, everything is ok

Share this post


Link to post

Hmm, if i disable SLI my FPS are back AND i can undock panels with just a minor loss in fps so it must be related to SLI

 

Also strange that SLI costs me 12-15% in FPS

 

 

Michael Moe

Share this post


Link to post

Before you do that, delete your shader cache, rename your Prepar3d.cfg file and let the sim rebuild it. Then crank up your IQ settings to where you want them.

Share this post


Link to post

When you get worse performance from 2 970s in SLI vs a single 780 SC surely something must be very wrong?

 

I was thinking about replacing my 1st gen Titan with 2 970s but after reading a thread like this one I'm very happy I stayed with my Titan and held on to my money!

Share this post


Link to post

Don't blame the hardware WebM  :P

 

As you know, I've been running twin 970's for over a year with none of these issues. Of course, I only use two monitors.

 

Vic

Share this post


Link to post

Still bad performance and undocking is a no go for now (in SLI)

 

Single card use and my performance is on pair with the GTX780SC

 

Have to solve this . Any other ideers?

 

Project Cars perform great (25-45fps increase)

 

Michael Moe

Share this post


Link to post

Okay this is a new one 

 

All i did was delete shaders and P3D.CFG

 

what can i do ?

 

 

Update

 

Fixed

 

Michael

 

default.jpg

Share this post


Link to post

Okay , 

 

I desided to test with some loads on the GPU but still single Card performance in terms of FPS is better on my system.

 

I get 36 fps single vs 31fps in SLI at EKCH at max settings (autogen Normal buildings)

 

GPU usage is 50-80% on single and 30-35% in SLI

 

Maybe i should test with older drivers

 

(still undock problem in SLI as well) :unsure:

 

Michael Moe


There much be some conflict here.

 

If i go to outside view with EZCA or any other ouside view and right click with the mouse the FPS gets halfed and stuttering panning around . Also i can see the Sli indicator is not moving in this scenario and in NI GPU usage only GPU1 is loaded.

 

hmm

 

Michael Moe 


Update:

 

right clicking in VC also cuts FPS in half so something is wrong. GPU 0 is unloaded when i right click

 

will try another driver

 

Michael Moe

Share this post


Link to post

Don't blame the hardware WebM :P

 

As you know, I've been running twin 970's for over a year with none of these issues. Of course, I only use two monitors.

 

Vic

No, you're right Vic. As I wrote Michael sure seems to have some spooky stuff going on with his SLI setup and I hope he will be able to track down the culprit.

 

What I meant was that since I can't be sure I wouldn't end up in the same situation I'm happy I decided to stay with my single Titan at least for now.

Share this post


Link to post

Okay nothing new i am afraid,

 

Tried 352.86 as well with same behaviour.

 

350.12 does not have these issues in SLI but then again its not supported and the GPU load is on GPU 1  (10-12% on GPU2) and rather same performance as my GTX780SC

 

So for now i am lost

 

Michael Moe

Share this post


Link to post

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this