SLI rendering modes.

[waveydave79]

After having major issues with getting SLI to work correctly I decided to install windows xp 32 bit after having x64. I am now running 81.98 with Asus A8n32-sli board, with xxx 6800 xfx (485/1100) sli cards.

I know that the hardware is working ok, I have enabled SLI in bios and have the bridge installed, after installing the drivers windows prompted me that SLI could be enenabled which i did.

To make sure the SLI has kicked in I enabled the Load balancing option, my problem is whenever I fan any benchmark, e.g. 3dMark 2005, only one card is warming up, The vertical line does not appear showing the load, instead a horizatel flat line, (Like a dead heartbeat line) shows instead, this line does move up and down the screen.

I have been pointed already that this is a rendering mode issue. My point is when the SLI worked at some point and this was displayed I was getting double the framerate in the demos in 3d mark, I believe the issue that the renndering mode is not there is a software issue, as I did work before just cannot put my finger on the problem.

I Only have these rendering modes.
SLI Multi-GPU rendering
SLI Single GPU rendering
SLI Antialising

I know there should be Alternate Frame Rendering and Split Frame Rendering every single other system I have seen and screenshots show these however there is no otions to change this in the performace advanced settings in the driver.

Maybe I havent loaded a chipset driver or something I am desparatly pulling my hair out and would greatly appreaciate any suggestions.

Thanks in advance.

 

[Borden]

I had this and then i installed coolbits (a registry tweak that unlocks more options in the control panel) and i got the extra rendering modes. You'll have to re-install it every time you install new drivers.

Get it here:

http://downloads.guru3d.com/download.php?det=815

 

[waveydave79]

Thx I`ll give this a go, I have already run a coolbits hack and restarted before but it didnt says Forceware 2.0 so perhaps this will work.

 

[waveydave79]

I did this and the options still did not show in Advanced > Performance and quality settings > advanced > SLI rendering mode still only shows my original 3 options.

Now running 81.98, its now set to SLI - single GPU and now getting 10,000 in 3dmark 2005, where as before I had 5000, so something has now kicked in. I just find it kinda fustrating that I dont have these other options.

 

[Scoobie Dave]

I Only have these rendering modes.
SLI Multi-GPU rendering
SLI Single GPU rendering
SLI Antialising

I have never messed about with these settings. I just use the correct game profile and I presume it pre-selects the right setting?

 

[waveydave79]

My problem is that I never presume anything.

Im sure that the issue is the drivers, I think that SLI is still in its infancy to a certain degree, and the amount of games that properly support it.

 

[waveydave79]

sorted it now

For anyone else who expierences this you need to go into the registry and Add Coolbits with the Value of 8. For some reason I had to do this manually downloading the coolbits from 3dguru does not enable this. After selecting the Rendering mode, you then get a disclaimer and you are then able to choose from a wider range of rendoring options.

Thanks to everyone who helped me sort this.

 

[iGiDK]

Glad you're up and running!

Personally I use either Alternate Frame Rendering or Alternate Frame Rendering 2 for BF2 and SLI AA 16x for PES

(Those are the only two games I play regularly)

Have fun!