Despite variance in memory bandwidth and latency, the chipsets are even in Cinebench's rendering and shading tests.
Sphinx speech recognition
Sphinx is much more sensitive to memory subsystem performance. Here, the Intel chipsets lead the way, with the P965 just trailing the 975X. The nForce4 SLI X16 isn't far off the pace, unlike the 570 SLI, which just can't keep up.