New Nvidia southbridge heatsink/fan for nforce 680i LT SLI motherboards. Its intended for Nvidia reference design 680i LT SLI motherboards such as the ones made by eVGA, XFX, BFG, Albatron, etc. It may fit other nforce chipset motherboards (such as nforce 650i Ultra/680i SLI/780i SLI, nforce 500/4/3/2 series, etc) but i have not tested compatibility with these boards. Those interested in using this fan on other motherboards should take measurements between mounting holes and compare them to the ones i'm providing here. Distance between push-pin occupied mounting holes edge to edge is 51mm (see picture 5). Distance between the 2 blank mounting holes edge to edge is 58mm (see picture 6). Example of installation of this fan on an eVGA 680i LT SLI motherboard is shown in the 4th photo. I also have the northbridge fan for 680i LT SLI boards which i will be listing separately.