hi..correct me if i am wrong
one thing unconfirm..this card supports pcie 2.0 and pcie x16..
but the bridge on the ( the bridge that connects two chips together on a PCB )card is only supports pcie x16 so even though if connect this card on a pcie2.0 board, it wont give u the benefits on pcie2.0....

read from a chinese site, if you put a pcie1.1 card on a pcie2.0 mobo, the performance will run better than the 1.1 one..
somehow rather if putting this card in a pcie2.0 mobo still can perform better than the pcie1.1..but it wont work on pcie2.0, it'd only recognized as pcie1.1

now the 3870x2 is 800/1800 or 825/1800 or 850/1800 by fan cooling..
read from fudzilla there is a water cooling coming on next week, one of those can hit over 900+/2000
source that tells this card will lose all the benefits from pcie2.0
http://www.fudzilla.com/index.php?option=c...d=5356&Itemid=1

This is from what u read...good googling..

reality from those who tested it.

pcie 2.0 spec can overclock higher
and is independent from ure PCI/sata  mhz...
been running them at 120mhz.. for a long time...

pcie sig 1.1 is not.. and will still be locked with sata/pci slots.

and its around 3-5 percent on same clocks but get higher clocks later on. slightly especially on mem.

fps increase is depending on 3 factors

Reso ure running
MB/GB ure GPU has
Bus/Mem speed on Bandwidth..