I use Strata 3D CX 5.6 at work on a mac pro 2.8GHz. x 2 Xeon with 4GB RAM and an ATI 2600 Pro video card (2008). At home I use Strata 3D CX 5.5 on an iMac 2.93GHz. with 4GB RAM and an NVIDIA GT 120 video card (2009). Today I decided to render the same model at work and at home to see how much faster the Mac Pro is than my iMac. Surprisingly, not much faster. Results: 4000x2826 pixels Settings: RT Best Renderer: Raytracing Texture detail: Fine Oversampling: 9 per pixel (extra smooth) Anti-alias Render alpha channel Render to layers ------ Mac Pro: 18 minutes 52 seconds iMac: 20 minutes 1 second I really thought the Mac Pro would be nearly twice as fast or more. I wonder if anyone else has tested an iMac against a Mac Pro with their professional apps? I wonder if this test only shows how much work Strata needs to do to optimize its apps to the Mac Pros much more capable processors?