I have an assembly with thousands of parts and a lot of surface-modeled shapes and generally quite complex geometry. I have tried running it on both a Quadro FX1800 and a Quadro FX580 and found the performance to be identical for what I do. I just create parts and put them together into assemblies that I can drag around to see how everything moves. Then I render things in an external rendering application.
No matter how fast I try to move around parts in the mechanisms (using the hand/drag components tool in assembly mode), I never see any kind of lag or slowness or whatever have you, except in wireframe mode (wireframe mode is almost unusable with both of them -- they are both dreadfully laggy and movement takes several seconds per frame with equal speed on both cards).
Can anyone tell me what exactly more expensive video cards do better? The $150 card performs the same as a card several times its price in what I do. I know there is a good reason why people get the more expensive cards. I am just curious what it is. Is it animation? Things like virtual reality?
I know the higher end cards have better accuracy and things like that. I'm just curious what other things they are valuable for. What things I might be able to really easily see the differences between video cards in while running Pro/E.