Does anyone here use Nvidia Cards with SLI? I have the cards connected with the SLI connector but it doesn't seem to do any performance boost. Enabled or Disabled (switched through NVIDIA Control Panel) doesn't improve my frame rate.
Does anyone know what I am doing wrong?
Have you enabled SLI in the nVidia control panel?
SLI use is off by default.
Yes it was on. The strange thing is, on or off doesn't seem to make a difference.
sli doesn't make much difference with il-2. i use quad sli and this doesn't give much performance increase over single card operation
Have you turned Vsync off?
With it on, it locks to your screen refresh rate, which on an LCD is usually 60Hz, so 60-fps.
With it off, you may have 'screen-tear', as the frames catch up with the draw rate, .ut you should (depending on your system) get over 120fps at 1600x1200.
Hope that helps.
Cheers, MP>
thanks for reply. i tried with and without v sync. sometimes get up to 200 fps without v-sync. there is small difference with and without sli, but not as much as i would expect/hope. have noticed that generally 9800 gx2 works better with newer games
Flight sims generally see little benefit from dual video cards because flight sims use the CPU far more than the video card. If you are running really high screen resolutions and high AA and AF, then multiple video cards will help a flight sim.
The ATI 4870 is currently the fastest card available and that chart certainly shows that particular card as being fast enough to handle IL2 at high resolutions with a single card. With older cards there is a benefit in using two cards at high resolution.