Most of these questions would be easy to answer and broaden. I went ahead and ordered a BFG 6800GT . I don't think I will have to many filtering issues with the GT. ATI's 5bit Bi to now an optimize only Tri except during color mipmaps maybe cutting too many corners. The X800 line reminds of the GF4 line, faster then the GF3 but not much more then that, you could say that for the R420 over the R300. I thought and still think that Nvidia's GF4 wasted valuable resources from Nvidia which should have been put into the NV3x line which turned out less then expected and very late indeed.