NVIDIA has said chipsets produced by ULi do not support SLI. ULi was recently acquired by NVIDIA and AsRock recently shipped a new ULi-based motherboard with SLI.
But according to NVIDIA this motherboard is not a certified configuration and ULi chipsets with SLI will not be supported in the future.
But Nvidia seems to be negative about certifying operation of its SLI technology even on chipsets from Uli, a chipset designer it currently owns. The only platform to support SLI is Nvidia’s own media and communication processors (MCPs).
“The Asrock board is not a certified configuration and will not be supported in the future. Our highest priority is to certify motherboards featuring Nvidia nForce MCPs,” said Bryan Del Rizzo, a spokesman for Nvidia chipset division.