Features, Layout and BIOS
| 680i | 680i LT | |
| MRSP (Dollar/Rupee) | 250$/18,000 | 200$/14,000 |
| PCB Color | Black | Green |
| Chipset | nForce 680i SLI MCP | nForce 680i LT SLI MCP |
| Cooling | Heatpipe with optional fan | Active (heatsink+fan) |
| PCIe Slots | 3(2x16) | 2(2x16) |
| PCIe x1 Slots | 2 | 2 |
| PCI Slots | 2 | 2 |
| FSB | 1333 MHz | 1333 MHz |
| SLI-Ready Memory | 1200 MHz | 800 MHz |
| Gigabyte Connections | 2 | 1 |
| USB Ports | 10 (6 back, 4 onboard) | 8 (4 rear, 4 onboard) |
| Extras | LED Diagnostics, Power and Reset Buttons & Speaker. | ------ |
The first and the foremost change you will observe is that the black PCB is replaced with a more generic looking green color PCB. The CPU area has a lot of free space. All the big capacitors have been pushed to the end of the board and you have ample space to use huge third party coolers. The 680i LT uses active cooling as opposed to passive heat pipe cooling for the 680i (a fan is provided as an attachment). I personally prefer active cooling but then the downside is the noise produced as small fans at high rpm are a little noisy. But in this case the fans are quite silent. The power connectors are at an unusual location between the 4-pin mole connector and the first memory slot.
When you come down you will notice that there are no diagnostic LEDs and the inbuilt speaker as in the 680i. Also missing are the power and reset buttons. The third PCI-Express card is missing here. Anyway, not many people as of now are availing its benefits and eliminating it in the board is a smart decision.
Was looking at this for my sli solution ... @ "aim for the vomer- Guessing u are a med student "- Any issues as regard to graphics and stability , as all 6 series and even the new 7 series chips from nvidia seem to have quite a few problems ... I would go with intel p-35 .. x-38 solution but for the fact that sli is not possible with them ... Anyone have any idea of the street price in chennai for one of these boards ATM... (28/4/2008) ... Will apreciate any responses ..... 
