In new release, the redundant Atom/Merom CPU library optimizations have been combined (v8+s8 and u8+n8) into a single "smart dispatch" library; the uncombined library optimizations will continue to be supported in the IPP 6.1 product.
Atom support in Intel IPP
Intel® Atom™ Processor Dispatcher Issue
It explains a known dispatcher issue on Intel® Atom™ Processors in Intel® IPP 6.0
