Two Cards running in 2-Way SLI
Two Cards are 40mm between them when installed next to each other with NO open Slot. P/N: 100-2W-0024-LR
Two Cards are 60mm between them when installed with two open Slots between them. P/N: 100-2W-0023-LR
Two Cards are 80mm between them when installed with three open Slots between them. P/N: 100-3W-0032-LR
Each Slot is 20mm apart from each other. Each Two Slot Graphics Cards are 40mm Wide.
Even if you have a open space as the above MB the space is still 20mm no slot 40mm to the next slot.
60mm between Cards so I would need the 2-Way Long Bridge. P/N: 100-2W-0023-LR on the X79 Dark Motherboard.

Remember that your Goal should be to have your Two Graphics Cards install into the Two X16 Slots on your Motherboard.
So remember to keep that in mined as well.
And for my GTX 690 Cards I would need a Single Wide Bridge that is spaced 80mm apart or 8cm Most Duel GPU Cards would need this one.
But no one makes one so we are stick with the Ribbon SLI Cable.
Standard Slot Spacing. Click on Image for Larger View

Each Slot is 20mm Apart
Attached Image(s)
