http://www.expreview.com/img/review/780isli/600900.jpg
The main difference between 680i SLI and 780i SLI:
1. support PCIe Gen2
2. 3 x PCIe x16
3. support 3-way SLI
Because the 780i SLI is using the 680i SLI's south bridge and north bridge plus a BR04 chip, so there is no huge difference between 680i SLI, even the hottest topic: 3-way SLI is only an driver upgrade, doesn't need any architecture changes.(NV later will release a 3-way SLI driver for 680i SLI.)
http://www.expreview.com/img/review/780isli/c72art.jpg
Test bed:
http://www.expreview.com/img/review/...i/platform.png
test reasult:
http://www.expreview.com/img/review/...i/sysmarkt.png
http://www.expreview.com/img/review/780isli/pcmarkt.png
http://www.expreview.com/img/review/780isli/everest.png
http://www.expreview.com/img/review/780isli/3dmark1.png
http://www.expreview.com/img/review/780isli/3dmark2.png
http://www.expreview.com/img/review/780isli/quake.png
for more info & scores pls go to the source: Expreview.com