It did not work. I tried every combination of ports and still did not work on my 980-g65 msi borad. I have a corsair tx850W PSU which can defiantly handle the load. Both cards work fine on their own in any of the 3 PCIE slots, but SLI'd they do not work. I have hybrid sli disabled and everything is the BIOS is how it should be. The only thing I can think of that could be casing the problem is:
Is it not working because the MSI card has a 256-bit memory interface and the Geforce has a 192?
Are different brands just incompatible? I've never heard that before?
I'm not sure you can mix like you can with Radeons. I think your 192 vs 256 memory interfaces for the old vs new GTX 460s could be the issue here. I'm pretty sure both cards need to have the same physical specs to have a successful SLI. Maybe someone else will chime in and clarify a bit more.