Different software needs different resources. Unsurprisingly, if the software in question is not bandwidth limited, providing more bandwidth is not going to sp

Different software needs different resources. Unsurprisingly, if the software in question is not bandwidth limited, providing more bandwidth is not going to speed it up. Most software is like that. It also truly depends on how it was optimized. The software being tested was likely optimized for previous gen configurations. It might very well favor a bit more computation over higher memory bandwidth usage. Wait until developers optimize against DDR4 Skylake systems, you might start to see 5-10% difference at that point. Truly bandwidth limited code can run up to about 40% faster on a DDR4 system, assuming typical 1600 MHz DDR3 and 2400 MHz DDR4.