since this thread seems to still be open, i too am also wondering about the 1.1 vs 2.0 PciE bandwidth issue. since as stated above the 1.1 PciE runs at a 250GB/Ps bandwidth, if your GPU runs/has a 250GB/Ps or lower data rate, wouldn't the 1.1 vs 2.0 be irrelevant in that case? for example, in my case i have a PciE x16 slot running at x16 1.1. and if i were to use say a GTX 550/560Ti on my board and they use less then the 250GB/Ps, my 1.1 wouldn't be limiting the card since its not even using the slots full bandwidth to begin with? i hope that came out right. it seems that the 1.1 vs 2.0/3.0 pciE really starts to differ in speed in terms of Xfire/SLI. which most 1.1 mobo's do not feature to begin with. i hope someone can clarify my statement.