Hi, my question is can I run SLI on a Non- Nvidia chipset motherboard ? I would like to buy one of these new intel boards (P35) but a lot of them are Crossfire supported, when it says that does it mean Crossfire only ?
no, they do not support sli officially. Wait a little until the x38 motherboards come out. Those MIGHT support sli.
Getting crossfire to run on SLi boards or vice versa can sometimes be done with a bit of fiddling around, flashing BIOSes, pencil mods etc, but it usually isn't worth bothering with.