Intel's X79 platform plays host to the fastest CPUs currently available. So the MSI X79A-GD65 8D kicks out some monster benchmarks numbers when you drop in that Core i7 3960X processor.
What it doesn't do, however, is put significant distance between itself and cheaper X79 motherboards in stock clocked benchmarks.
If you want a reason to spend more, therefore, it'll be features like MSI's OC Genie overclocking tool that will have to win you over.
CPU rendering performance
Video encoding performance
Real-world productivity performance