December 10, 2010, 10:52:09 am
Simple: Tesla/DirectCompute is very slow compared to the 3D pipeline so in graphics terms there's no use for this. Physics could be accelerated with PhysX but it only works on NVIDIA and physics is hardly a bottleneck.
We can easily render 15 million polygons (tested yesterday on a 480) at decent frame rates and this is well beyond the limit most people need. If we release the 64 bit version this number is even higher. More speed is always welcome but Crossfire is not some magical solution. It provides extra fill rate so at high resolution it has some benefits but in Lumion you can have an excellent preview if you turn the resolution a bit down.
Crossfire and SLI still work though! If you see this page you can see that DX9 scales but just not as good as DX11 titles. Some of the newer titles have perfect scaling while older games are faster but not exactly double speed at high resolutions. I think there should be some things we can do to enhance SLI/Crossfire framerates. http://www.benchmarkextreme.co
x64 will be available but we are testing it to make sure everything is fine. If they wouldn't have decided to drop XP with DirectX 10 then Quest3D and Lumion would use the latest version of DirectX now. Dropping XP, are you crazy? That's 47% of all computers!
So, if we can improve the SLI performance and have 64 bit what's the benefit of DX11? End users wil barely notice. Just pick up some games to try and find the differences between DX11 mode and DX9 mode. The differences are marginal.