Question: performance is different on Win 2008 (x64) vs Win 2012 (x64), by using same code, same src, and same CPU.
CPU : Intel Xeon X5650 @ 2.67GHz (2 processors)
Using IPP 7.0, we run G.723 encoder and input same voice source. On Windows 2008 is faster than on Windows 2012 by double times.
Library version shows: IPPSC library used: 7.0.205 Build 1072, name ippscw7_l.lib
IPP shows: CPU type (0x45), feature (0x0CDF). All information on Win 2008 is identical to Win 2012.
However, encoder is much faster on Win2008. Processing time on Win2012 takes longer by 2 times.