Brett Favre said:
Anybody know about this?
I'm planning to plug the new geforce 9800gx2 PCI-express 2.0 in my old P35 motherboard.
will I loss some performance?
Its all relative as we dont know anything about the rest of your system, but i doubt that the slot would be the thing to cause any performance issues. As long as you have a good enough system to keep up with it you will be fine.