It's in the gaming benchmarks that the decision of vendors like ASUS and Biostar to boost the clock speeds on the integrated graphics pays off. ASUS in particular was pretty impressive thanks to its 700MHz core clock, which blazed ahead of the 600MHz Biostar. Its results were almost as good as the Radeon HD 4290 IGP built into the AMD 890GX. Gigabyte went with the default 560MHz, but without SidePort memory, it's only slightly ahead of the AMD 785G running at 500MHz.
Blu-ray playback however depended solely on the UVD2 on the integrated graphics core and since all the boards have the same engine regardless of their graphics clock speeds, their performance remains mostly similar. The Biostar was marginally higher but at such relatively low CPU utilization, it doesn't really matter. It's safe to say that users should have no issues with playing back HD content on these motherboards with modern processors.