Trusted Reviews have looked at the Inno3D 7300 GT and Sapphire X1300 graphics cards, while also getting the 7300 GT and 7600 GT to worth together in SLI.
If you take a look at the SLI performance graphs, it is first of all worth noting that there is a significant improvement when running two of these 7300 GT's in SLI =96 as much as 100 per cent improvement. Obviously the two 7600 GTs have the greatest performance, but most interesting is how the mixed card scenario has performance almost exactly in between the two. This shows how well GPU load balancing is working.Inno3D 7300 GT vs Sapphire X1300 and Asynchronous SLI