FUD Zilla has some info on NVIDIA's upcoming GeForce 9800 GT graphics card. The site writes the GeForce 9800 GT will have two 6-pin PCI Express power connectors and will have support for Hybrid SLI so it will use 0W in idle mode if you have a motherboard with a Hybrid SLI capable northbridge like the nForce 780a.
Geforce 9800GTX is, as you know, based on the same chip as Geforce 8800GTS and 8800GT and, together with 9800GX2, it's a high performance card that supports this power-saving feature.
Geforce 9 means Hybrid Power support, but please don’t forget that for such a card you need a board that supports it, and so far only Nforce 780a that supports Phenom, Athlon and Hybrid Power is out. An Intel alternative is yet to be launched.