Hi all, Running a 4870x2 on a p5q3 deluxe mobo. CPU is a currently stock clocked Q9550. I believe that the mobo has dual x16 PCI-E lanes, (can someone verify?) and I am contemplating adding a 4870 to the setup for tri-fire. Can anyone reliably estimate, or point me to some charts and graphs, whether I will get much real-world improvement, or whether the system is already bottlenecked elsewhere? Many thanks in advance.