I use motion and color a lot. My mac pro has a 4870 right now. How much better is a higher end card on the market right now? In other words... is it worth buying a new card for the performance bump? (25%+ is good in my world)
For the apps you talk about (Color and Motion) you're not going to see a huge gain like 25%. For gaming and more general graphics usage you'll get a decent gain. The 4870 is still a good card (equivalent and sometimes better than 5770). Take a look at Rob's benchmarks: http://barefeats.com/wst10g4.html Of course a lot of this can change with improved drivers and better software support. I'm sure Final Cut Studio 4 will better utilize OpenCL for added performance boost.