We've ran a few benchmarks that primarily measure CPU performance and the related tuning. First and foremost we have Cinebench 11.5, the well known 3D rendering benchmark that pretty much exclusively scales with CPU performance, not with memory or other performance.
The ASUS and ASRock, the two motherboards with aggressive turbo, lead the chart in almost every test.
We see a similar result in Passmark 8 CPUmark: the scores of the boards with aggressive turbo are almost identical.
The last CPU benchmark we ran was the Tech Arp x264 video encoding benchmark. The graph down below again corresponds with what we saw in the previous tests.