I had a very similar setup. Same CPU, but an ATI 5830. I upgraded to a Phenom IIx6 1100T. Using *******' tweaks. Now my CPU is only running 3 cores but my card seems maxed out, especially with Orbx stuff. I think a better card might be the better upgrade. Not sure. There's a bottleneck somewhere. I'm only getting 20 fps and neither my CPU (using task manager) or graphics card (using gpu-z) shows 100% load. I suspect that it might be the card however, as the "GPU load" graph in GPU-Z doesn't seem to be a totally accurate indication of GPU load. Any ideas? Robb