I guess the latest test has such a peak score on GPU_16 is that you turned off AA.
The reason OpenGL AA is limited on Geforce cards is so they don't compete with Quadro cards.
Why it appears that Rhino struggles with some cpu's with more than 4 cores are unknown to me.
But you have other scores that are lower than the previous test so this baffles me, and these inconsistencies are one of the reasons I made the test.
Sorry I can't help you more though.