Should have no effect. Crossfire and SLI are both supported by intel chipsets, and have been supported since the 975 Chipset. Just Nvidia were tossing their toys out of their pram in a hissy fit, and artifically disabled SLI on intel platforms, so they could sell their crummy chipset at all.
At one point hacked drivers proved that SLI was both possible, and performed as expected on intels platform.
There has been a fair amount of cooperation between AMD and Intel since forever, hence AMD having SSE and Intel having EM64T. With that level of "sharing" in core processor tech, I suspect they will have no problems to continue with Crossfire support. (After all AMD/ATi will want to sell their cards, and if their customers have Intel already.....)
Considering the installed base of intel chipset systems, Nvidia have been cutting into their retail opportunities, and I imagine have lost more GPU sales than they picked up in chipset sales. I might have tried SLI out, but I wont switch to an Nvidia chipset, so thats a lost sale for Nv
Even so, NV are still "forcing" intel to use the Nforce 200 chip to drive the second PCI-express slot, so their drivers can "detect" the NV hardware :/
