So we are talking not only 55nm but a GX2 monster. I'm still skeptical. I'd definitely have to upgrade my power supply and that would hurt. Also no practical water cooling since the GX2 water blocks cost half the MSRP of the cards. Although the X2 cards are also expensive to water cool. But there is at least some alternative with dual discrete blocks. Not so with the back-to-back GX2 layout. What would be great is if Nvidia could switch to a dual GPU single PCB solution like AMD.