We start off with a couple of benchmarks that mainly measure CPU performance. The differences between the motherboards are small in most tests, but we do see a difference between boards that do and do not follow Intel's turbo-specifications. Some boards use the maximum turbo speed meant for a single core, on all cores. The result is a faster, but also less power efficient system, as we will see later. It should be noted that this 'aggressive turbo' can be enabled or disabled in the BIOS if you so desire, so the performance should not factor in when choosing a motherboard in our opinion. Aside from that they barely vary.
Both the Apex and the XPower fall into the category of faster X299-boards. The MSI Gaming Pro Carbon AC is the only motherboard that does not ‘play fair’ in these graphs, with the above mentioned aggressive turbo.