Hellborn, All I can tell you is that it does matter which ard your computer has. That is why you have diffrent viewport option available to use and to decide which one displays and refreshes the fastest. I have doubts about your tests: First - I know for a fact that Gmax and 3D StudioMax will not display fog and atmospheric effects in a viewport no matter what card you are using. Whereas Vue 4 will. Second - When you are viewing the soft shaded model ect.. in Max, Gmax and Cinema all products I am familiar with you do not need OpenGL drivers - just partial GL. Third - Vue 4 viewport rendering does have code written for full OpenGL viewing IF your card will support it. I am using the Oxygen GVX 210 w/ full Open GL support and my screen refresh rates are real time with atmospheric effects. The card you have the GeForce 3 was never meant to be a rendering card but a gaming card. " The NVIDIA GeForce3 family of graphics processing units (GPUs) shakes up the gaming industry with unprecedented visual effects and sizzling frame rates" They are two totally seperate things (gaming & rendering cards) Whereas your card can show fog, atmospheric effects, ect.. in the gaming enviroment the other high end cards were meant to make the material your card views. "Oxygen GVX210 delivers high-end geometry and rasterization graphics acceleration on a single AGP card for the most demanding workstation professional. By integrating two 3Dlabs GLINT R3 rasterizers, the new generation GLINT Gamma G2 geometry processor and 64 MB of memory on a single card, Oxygen GVX210 boosts the interactivity of huge models with a 256-bit memory bus and Virtual Textures that shatter the limitation of onboard graphics memory capacity." I hope you dont take this wrong but I believe that e-on software wrote there program to take advantage of high end features of some computers and cards but also create it to work for and run well on the"gaming" machine for lack of a better word. In the manual it says if you have problems with the viewport displays to change them. Sorry for going off on a tangent all :) but it does matter!!