Cant get SLI to work with Arma 2

[Nyogtha 10]

Hi I cant get SLI to work with Arma 2, I have tried the EVGA SLI enhancement exe but it didnt not add Arma 2 to my list (it did add arma 1), as a result of not been able to run SLI my performance is not what it should be. I have the lateast Nvidia drivers, anyone have a suggestion for how to get the SLI working?

PS I have the steam version (anyone know when it will be patched?)

[Eclipse4349 0]

Once the EVGA SLI Enhancer is installed, you need to go into the Nvidia Control Panel and add ARMA 2 to the program list. After using the Enhancer, the Nvidia Control Panel will recognise ARMA 2 when you manually add it in. From there, you can force ARMA 2 to use SLI, and adjust the number of frames to render ahead to whatever gives you the best performance.

I used this fix myself, and, using Everest, verified that ARMA 2 does indeed use both video cards now. My FPS skyrocketed too!

See you on the battlefield!

Edited June 30, 2009 by Eclipse4349

[goodgimp 10]

Once the EVGA SLI Enhancer is installed, you need to go into the Nvidia Control Panel and add ARMA 2 to the program list. After using the Enhancer, the Nvidia Control Panel will recognise ARMA 2 when you manually add it in. From there, you can force ARMA 2 to use SLI, and adjust the number of frames to render ahead to whatever gives you the best performance.

I used this fix myself, and, using Everest, verified that ARMA 2 does indeed use both video cards now. My FPS skyrocketed too!

See you on the battlefield!

Are these steps the same for a SLI'd card like a GTX295? I've been on ATI for a while, this is my first "SLI" nVidia video card, so sorry for the n00b question.

[Baxalasse 10]

Hi I cant get SLI to work with Arma 2, I have tried the EVGA SLI enhancement exe but it didnt not add Arma 2 to my list (it did add arma 1), as a result of not been able to run SLI my performance is not what it should be. I have the lateast Nvidia drivers, anyone have a suggestion for how to get the SLI working?

PS I have the steam version (anyone know when it will be patched?)

What list are you talking about?

Start by enable "SLI visual indicator", and of course SLI, in the nvidia control panel. Then start the game from within steam. If you use a custom shortcut (to arma.exe) it wont work. That should give you some green bars to the left of the screen, showing SLI workload, when the game is started.

Other SLI users, do the bars fill up completely for you!? Mine is like utilizing only 10-20%, indicating not very much work is being done, is this normal?

Edited July 7, 2009 by Baxalasse

[ICE-Raver 10]

My squadmate got more FPS by switching off sli and running a single card according to the benchmark for some strange reason.

[Baxalasse 10]

My squadmate got more FPS by switching off sli and running a single card according to the benchmark for some strange reason.

I agree with him, gameplay feels smoother whit only one card, even if FPS is the same!

[Kenjineering 10]

Copied and pasted from the Steam forums by Jacob.

"How to enable SLI w/STEAM vers.

--------------------------------------------------------------------------------

Hey guys, this is how I got the "crysis" rename trick to work with STEAM:

1) Locate arma2.exe; steamapps/common/arma2

2) Rename arma2.exe to crysis or crysis 64 (.exe)

3) If you attempt to start the game, it will say unavailable

4) Right click arma2 on steam my games tab, properties, local files, and click "verify local integrity of game cache"

5) After this, relocate arma2.exe as above. There should now be two arma2.exe files, one renamed slightly different, rename either of these to Crysis or Crysis64 and your game should run perfectly. Just open nvidia CP and add crysis or crysis64 from the arma steam folder, force vsync off, and you should be in business.

The other solution if for some reason this does not work for you, is download nhancer and manually create and tweak ur arma2 profile from there. Full instructions:

Quote:

I got Windows Vista 64bit, Geforce 295 GTX and the Steam version of ArmA 2.

ArmA 2 only used one of my cards GPUs (SLI mode wasn't working). I tried the EVGA patch and all the other tweaks but they didn't work either. Afaik the EVGA patch just makes a crysis-like profile for arma2, so I tried to do this manually with nHancer (http://www.nhancer.com/?dat=downloads) and it worked:

First I did a clean 186.16 driver install with Drivers Sweeper. I then opened nHancer and duplicated the crysis profile (right click crysis profile -> dublicate profile).

From the new ArmA2 profile I disabled SLI DX10 Mode (from SLI DX10 tab, not the regular SLI), also disabled Hybrid SLI and Hybrid SLI DX10 modes from SLI tab. (For testing purposes I also enabled the SLI Load Balancing Graph, check box + the ON radio button). From Enhancements tab I disabled Vertical Sync.

Then I added the arma2.exe executable (Steam\steamapps\common\arma 2\arma2.exe) and Steam.exe as a launcher. I didn't know if that's actually considered as a launcher so I added another arma2.exe just in case, without the launcer. To get the SLI load graph working I also checked the "Profile be activated manually" and activated the profile from the menu (Tools -> Activate Profile -> ArmA2).

I ran the game from the .exe (with steam online) and SLI works! FPS in menu increased from 50 to 100 and in-game fps raised a lot as well.

After confirming it works, you can disable the SLI Load balancing graph and set Driver defaults from the menu (Tools -> Activate Profile.)

Hope this helps people struggling with multi-GPU and the EVGA patch."

EVGApatch worked for me when I was using Vista64bit. But I had to use the second method when I switched to Win7.

Edited July 8, 2009 by Kenjineering

[nzjono 10]

Hi I cant get SLI to work with Arma 2, I have tried the EVGA SLI enhancement exe but it didnt not add Arma 2 to my list (it did add arma 1), as a result of not been able to run SLI my performance is not what it should be. I have the lateast Nvidia drivers, anyone have a suggestion for how to get the SLI working?

PS I have the steam version (anyone know when it will be patched?)

Did you bother to read any of the multiple post on exactly the same issue in this forum before making a new post?

[Baxalasse 10]

Nvidia SLI Patch for Arma 2

http://forums.bistudio.com/showthread.php?p=1353210