Do NOT use a VF1000 on a GTX460. I doubt it will fit due to the rectangular mounting holes on the GTX460 (Palit models excluded) first of all. Second and more importantly, its rated TDP is 100w and it cannot keep up with a lowly HD5770 let alone a GTX460 (tested). Heck, it only does a decent job on my GT240.
The Thermalright Spitfire will have, if they have not yet released it, a GF104 compatible mounting bracket as well. This is by far the most powerful air cooler currently available. I love mine

It will generally require heatsinks/airflow on the face of the PCB and its VRMs and such though.
I tested the Spitfire on a HD5850 and came up with load temps (@ stock) of 40C in Furmark with a low RPM 140mm fan. I was actually able to run said HD5850
passively as well. And that was a non-reference DirectCU model with a higher TDP

Once my GF100/104 mounts arrive I may do some testing on the GTX470 as well.