It is designed to take that yes as there is a black slot placed with a three slot gap for the second card. This slot runs at PCI EX 3.0 x16 when only two cards are installed.
The Rampage can effectively take upto 3 of those cards with the lager coolers on.
The Rampage can effectively take upto 3 of those cards with the lager coolers on.
Not so sure about crossfire, but with SLI you can't really run three DCUII 680s because of how you need to bridge them, there doesn't seem to be a flexible SLI bridge longer than 12cm, and the 3way PCB bridges (that don't fit on the DCUII680s anyways) are designed for slot 1-3-5, or 1-4-6, not 1-4-7. Unless theres some way of getting a custom SLI bridge, or a longer flexible one, since you need to took card 1 to card 2, card 2 to card 3, and then card 3 back up to card 1 (this is the part that doesn't work, I think you need a 15 or 16cm flexible bridge for this). When I add my 3rd DC2Top card I'll end up getting some EK blocks for them to turn them into 2 slot cards so they actually fit the bridge.
But 2 cards is fine, that's just in case you decide to add a 3rd card in the future.
CM Storm Trooper
Rampage IV Extreme
3930K@5.1GHz 1.48V (+0.085 Offset) XSPC Raystorm +Alphacool 360mm UT-60 /w 3x Scythe Ultra Kaze @2200rpm
Asus DC2T GTX680 x2 (going for a 3rd with some EK blocks when the budget allows)
32GB (4x8GB) DDR3-2400 G.skill Trident X
2x 256GB Vertex4 Raid0
Seasonic Platinum 1000W
But 2 cards is fine, that's just in case you decide to add a 3rd card in the future.
CM Storm Trooper
Rampage IV Extreme
3930K@5.1GHz 1.48V (+0.085 Offset) XSPC Raystorm +Alphacool 360mm UT-60 /w 3x Scythe Ultra Kaze @2200rpm
Asus DC2T GTX680 x2 (going for a 3rd with some EK blocks when the budget allows)
32GB (4x8GB) DDR3-2400 G.skill Trident X
2x 256GB Vertex4 Raid0
Seasonic Platinum 1000W
