Posted 12 April 2012 - 12:18 AM
the 7870 is the card to get for you, it has performance similar to that of a nvidia 580, and when overclocked is a beast of a card.
there will be no loss by using a pcie3 card in a 2.1 slot, even dual gpu cards dont max out a 2.1 slot, so there will be no issue at all
and @stonerboy, i agree that for now it is mostly useless, but with workstation cards and the like it is important, and it will also allow for raid cards containing more channels per card and the like.
another thing to remember is that now a mobo that splits lanes to a x8 configuration for multiple cards will now have the same bandwith as pcie2 at x16
i7 3930k @ 5GHz 24/7 32Gb Corsair Dominator @ 1866MHz
Asus Rampage IV Extreme 3x EVGA 670 FTW @ 1300MHz Core boost
256Gb Crucial M4 - Boot Drive 4x2Tb HDD Raid 5 - Data Storage
CPU, Motherboard, GPU and RAM watercooled by MIPS and Heatkiller
Heavily Modified XSPC Cube Case